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Full vulnerability report · 2023
CVE-2023-4911High confidence

GNU C Library Buffer Overflow Vulnerability

GNU · GNU C Library

Official source articles: Siemens SSA-082556 ↗ · Red Hat RHSA-2023:5453 ↗. Check the applicable product and release in the original source.

7.8HighCVSS 3.1
Recommended action
Patch only the product branches with a verified fix

CISA confirms exploitation in the wild and lists 2023-12-12 as the remediation due date. Verified remediation exists for at least one product or source, but 7 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Fix availability varies by product
R
Operational reassessment

Published severity in operational context

Open reassessment dashboard →
Published severityHighOperational priority:Critical, raised one band.upgradedsince 21 Nov 2023

Evidence used

  • CISA confirms exploitation in the wild.
  • A structured source references public exploit or proof-of-concept material.
  • Exploitation requires an existing local or physical foothold with privileges.
  • EPSS is 63.77% for the current model date.

Compensating controls

  • Validate the affected product branch and deploy the verified fixed release.
  • Restrict local access and enforce least privilege on affected hosts.
  • Increase monitoring for the attack path and post-exploitation behaviour described in the report.

Verification

  1. Confirm that the asset runs GNU GNU C Library and falls inside the recorded affected range.
  2. Verify the installed build against the product-specific fixed version after deployment.
  3. Validate exposure, authentication requirements and compensating controls in the actual environment.
  4. Reopen this reassessment when CVSS, KEV, EPSS, exploit evidence or remediation changes.
Mitigation target: Within 3 daysRemediation target: Within 90 days

This automated reassessment organises public evidence. It does not know asset exposure, business impact or control effectiveness and does not replace CVSS or a human risk decision.

Cross-source reconciliation

Remediation availability differs by product scope

Verified remediation exists for at least one product or source, but 7 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Distribution package intelligence

Release-specific package status

Debian, ubuntu findings are scoped to the named distribution, release and source package. An absent finding does not mean a package is unaffected.

5 package states
Repository candidate not checked

A published vendor fix does not prove that a matching update is enabled and installable on a particular asset. Confirm the local package candidate before scheduling remediation.

Distribution releaseSource packageVendor stateFixed versionEvidence
Debian trixietrixie · sourceglibcVendor fix publishedDebian records a fixed source-package version for this release.2.37-12Debian Security Tracker ↗Source updated 5 Oct 2026
Debian bookwormbookworm · sourceglibcVendor fix publishedDebian records a fixed source-package version for this release.2.36-9+deb12u3Debian Security Tracker ↗Source updated 5 Oct 2026
Debian forkyforky · sourceglibcVendor fix publishedDebian records a fixed source-package version for this release.2.37-12Debian Security Tracker ↗Source updated 5 Oct 2026
Debian sidsid · sourceglibcVendor fix publishedDebian records a fixed source-package version for this release.2.37-12Debian Security Tracker ↗Source updated 5 Oct 2026
Ubuntu 24.04 LTSnoble · standard archiveglibcVendor fix publishedCanonical reports that a fixed source package version has been published. Repository candidate availability is not checked by BlackTree.2.38-1ubuntu6Canonical Ubuntu Security ↗Source updated 5 Oct 2026
Direct vendor intelligence

Authoritative vendor CSAF and VEX advisories

Structured product status and remediation from the issuing vendor. Product-state explanations are always visible; large lists can be searched or downloaded.

3 current
SSA-082556 · CSAF 2.0 · revision 7 · interimSiemens ProductCERTSSA-082556: Vulnerabilities in the additional GNU/Linux subsystem of the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP V3.1.5
5 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0) >= V3.1.5
  • SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0) >= V3.1.5
  • SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0) >= V3.1.5
  • SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0) >= V3.1.5
  • SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0) >= V3.1.5
Summary
A buffer overflow was discovered in the GNU C Library's dynamic loader ld.so while processing the GLIBC_TUNABLES environment variable. This issue could allow a local attacker to use maliciously crafted GLIBC_TUNABLES environment variables when launching binaries with SUID permission to execute code with elevated privileges.
Remediation
Limit access to the interactive shell of the additional GNU/Linux subssytem to trusted personnel only.
SSA-794697 · CSAF 2.0 · revision 9 · interimSiemens ProductCERTSSA-794697: Vulnerabilities in the additional GNU/Linux subsystem of the SIMATIC S7-1500 TM MFP before V1.1
1 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • SIMATIC S7-1500 TM MFP - GNU/Linux subsystem
Summary
A buffer overflow was discovered in the GNU C Library's dynamic loader ld.so while processing the GLIBC_TUNABLES environment variable. This issue could allow a local attacker to use maliciously crafted GLIBC_TUNABLES environment variables when launching binaries with SUID permission to execute code with elevated privileges.
Remediation
Update to V1.1 or later version
SSA-831302 · CSAF 2.0 · revision 5 · interimSiemens ProductCERTSSA-831302: Vulnerabilities in the BIOS of the SIMATIC S7-1500 TM MFP before V1.3.0
1 known affected

The vendor explicitly identifies these products as affected by this CVE.

  • SIMATIC S7-1500 TM MFP - BIOS
Summary
A buffer overflow was discovered in the GNU C Library's dynamic loader ld.so while processing the GLIBC_TUNABLES environment variable. This issue could allow a local attacker to use maliciously crafted GLIBC_TUNABLES environment variables when launching binaries with SUID permission to execute code with elevated privileges.
Remediation
Update to V1.3.0 or later version
Optional official sources

National CERT insights
?CERT means Computer Emergency Response Team; CSIRT is the closely related term Computer Security Incident Response Team.

Choose official national sources for this report. Each advisory shows its original language. Your selection is remembered on this device and included in shared links.

Official European source

ENISA European Vulnerability Database

Official EUVD identifiers, advisory evidence and known-exploited context. Missing fields are not treated as evidence of low risk.

1 current
ENISA EUVD identifier

EUVD-2023-54750

CISA KEV mirrored by ENISA

A buffer overflow was discovered in the GNU C Library's dynamic loader ld.so while processing the GLIBC_TUNABLES environment variable. This issue could allow a local attacker to use maliciously crafted GLIBC_TUNABLES environment variables when launching binaries with SUID permission to execute code with elevated privileges.

EUVD state
Present in the current official mapping
Known exploitation
Recorded by ENISA since 21 Nov 2023. Evidence sources: cisa_kev.
ENISA score
7.8 · CVSS 3.1
Advisory evidence
19 linked advisory records
Explicit mitigation evidence

Only statements that explicitly mention a fix, patch, update, workaround or mitigation are shown here.

  • csaf_redhat · RHBA-2024:2413Red Hat Bug Fix Advisory: glibc bug fix and enhancement update
  • csaf_ncscnl · NCSC-2025-0187Kwetsbaarheden verholpen in Siemens producten
  • csaf_redhat · RHSA-2023:5476Red Hat Security Advisory: glibc security update
  • csaf_redhat · RHSA-2023:5453Red Hat Security Advisory: glibc security update
  • csaf_redhat · RHSA-2024:0033Red Hat Security Advisory: Red Hat Virtualization Host 4.4.z SP 1 security update
  • csaf_redhat · RHSA-2023:5455Red Hat Security Advisory: glibc security update
  • csaf_redhat · RHSA-2023:5454Red Hat Security Advisory: glibc security update
Recommended actionPatch only the product branches with a verified fix

CISA confirms exploitation in the wild and lists 2023-12-12 as the remediation due date. Verified remediation exists for at least one product or source, but 7 structured product or package states remain unresolved. Apply remediation only to the exact product branch confirmed by its source.

Fix availability varies by product
01

What, why and how

GNU C Library's dynamic loader ld.so contains a buffer overflow vulnerability when processing the GLIBC_TUNABLES environment variable, allowing a local attacker to execute code with elevated privileges.

What

GNU C Library's dynamic loader ld.so contains a buffer overflow vulnerability when processing the GLIBC_TUNABLES environment variable, allowing a local attacker to execute code with elevated privileges.

Why

A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may execute code or commands in the affected security context.

What

GNU C Library's dynamic loader ld.so contains a buffer overflow vulnerability when processing the GLIBC_TUNABLES environment variable, allowing a local attacker to execute code with elevated privileges.

Why

A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may execute code or commands in the affected security context.

02

Exploit reality and attack path

CVSS severity, EPSS forecast probability, public exploit material and CISA-confirmed exploitation are separate signals.

Observed exploitation
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
Confirmed in the wild

CISA added this CVE to its Known Exploited Vulnerabilities catalogue on 2023-11-21.

Public PoC / exploit material
?Confirmed exploitation and public exploit material are separate signals. Attacks can occur without public proof-of-concept or exploit code.
Reference recorded

A structured CVE source labels at least one public reference as exploit material. BlackTree has not independently validated that it is safe, reliable or weaponised.

Likely attack path
local access → Heap-based Buffer Overflow → execute code or commands in the affected security context
Attack surface
Local
Privileges required
Low: a basic authenticated account is required
User interaction
None
Attack complexity
Low: no specialised conditions are recorded
Security boundary
Unchanged: impact remains within the vulnerable component's security authority
Weakness
?CWE means Common Weakness Enumeration: a standard category for the underlying weakness.
CWE-122 ↗

CWE-122: Heap-based Buffer Overflow. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

CVSS vector
?CVSS means Common Vulnerability Scoring System. The vector records the metric values used to calculate technical severity.
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Common Vulnerability Scoring System 3.1: the compact vector below is decoded into plain language.

AVLocalAttack vector: The attacker needs local access to the vulnerable system.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRLowPrivileges required: The attacker needs basic user-level privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CHighConfidentiality impact: A successful attack can cause a major loss.IHighIntegrity impact: A successful attack can cause a major loss.AHighAvailability impact: A successful attack can cause a major loss.
Post-exploitation / living off the land
After compromise, an attacker may use built-in shells, scripting engines, scheduled tasks and native network utilities for discovery, persistence or movement. This is a plausible LoTL path, not evidence that it has occurred for every attack.
Remote code executionPrivilege escalationCWE-122CISA KEVPublic exploit reference
A

Official authority intelligence

Only matched European and national findings are included. Language selectors and unavailable sources are omitted.

ENISA EUVD · EUVD-2023-54750Known-exploited evidence recorded

A buffer overflow was discovered in the GNU C Library's dynamic loader ld.so while processing the GLIBC_TUNABLES environment variable. This issue could allow a local attacker to use maliciously crafted GLIBC_TUNABLES environment variables when launching binaries with SUID permission to execute code with elevated privileges.

Official EUVD record ↗
BSI · German · WID-SEC-2024-0106Oracle Communications: Mehrere Schwachstellen

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in Oracle Communications ausnutzen, um die Vertraulichkeit, Integrität und Verfügbarkeit zu gefährden.

Official advisory ↗
BSI · German · WID-SEC-2023-2543GNU libc: Schwachstelle ermöglicht Privilegieneskalation

Ein lokaler Angreifer kann eine Schwachstelle in GNU libc ausnutzen, um beliebigen Programmcode mit Administratorrechten auszuführen oder seine Privilegien zu erweitern.

Official advisory ↗
Cyber Security Agency of Singapore · English · CSA-SB-20231004Security Bulletin 04 Oct 2023

The Cyber Security Agency of Singapore included this CVE in its official Security Bulletin 04 Oct 2023, published on 4 October 2023. Open the linked bulletin for the product, severity and reference information published in that issue.

Official advisory ↗
CERT-FR · French · CERTFR-2026-AVI-0218Multiples vulnérabilités dans les produits VMware

CVERecord?id=CVE-2023-45803 Référence CVE CVE-2023-45853 https://www.cve.org/CVERecord?id=CVE-2023-45853 Référence CVE CVE-2023-46218 https://www.cve.org/CVERecord?id=CVE-2023-46218 Référence CVE CVE-2023-4641 https://www.cve.org/CVERecord?id=CVE-2023-4641 Référence CVE CVE-2023-47038 https://www.cve.org/CVERecord?id=CVE-2023-47038 Référence CVE CVE-2023-47039 https://www.cve.org/CVERecord?id=CVE-2023-47039 Référence CVE CVE-2023-4806 https://www.cve.org/CVERecord?id=CVE-2023-4806 Référence CVE CVE-2023-4813 https://www.cve.org/CVERecord?id=CVE-2023-4813 Référence CVE CVE-2023-4863 https://www.cve.org/CVERecord?id=CVE-2023-4863 Référence CVE CVE-2023-4911 https://www.cve.org/CVERecord?id=CVE-2023-4911 Référence CVE CVE-2023-50495 https://www.cve.org/CVERecord?id=CVE-2023-50495 Référence CVE CVE-2023-5156 https://www.cve.org/CVERecord?id=CVE-2023-5156 Référence CVE CVE-2023-52355 https://www.cve.org/CVERecord?id=CVE-2023-52355 Référence CVE CVE-2023-52356 https://www.cve.org/CVERecord?id=CVE-2023-52356 Référence CVE CVE-2023-52425 https://www.cve.org/CVERecord?id=CVE-2023-52425 Référence CVE CVE-2023-52426 https://www.cve.org/CVERecord?id=CVE-2023-52426 Référence CVE CVE-2023-53107 https://www.cve.org/CVERecord?id=CVE-2023-53107 Référence CVE CVE-2023-53164 https://www.cve.org/CVERecord?id=CVE

Official advisory ↗
CERT-FR · French · CERTFR-2025-AVI-0969Multiples vulnérabilités dans les produits VMware

d?id=CVE-2023-48233 Référence CVE CVE-2023-48234 https://www.cve.org/CVERecord?id=CVE-2023-48234 Référence CVE CVE-2023-48235 https://www.cve.org/CVERecord?id=CVE-2023-48235 Référence CVE CVE-2023-48236 https://www.cve.org/CVERecord?id=CVE-2023-48236 Référence CVE CVE-2023-48237 https://www.cve.org/CVERecord?id=CVE-2023-48237 Référence CVE CVE-2023-48368 https://www.cve.org/CVERecord?id=CVE-2023-48368 Référence CVE CVE-2023-48706 https://www.cve.org/CVERecord?id=CVE-2023-48706 Référence CVE CVE-2023-48795 https://www.cve.org/CVERecord?id=CVE-2023-48795 Référence CVE CVE-2023-49083 https://www.cve.org/CVERecord?id=CVE-2023-49083 Référence CVE CVE-2023-4911 https://www.cve.org/CVERecord?id=CVE-2023-4911 Référence CVE CVE-2023-49582 https://www.cve.org/CVERecord?id=CVE-2023-49582 Référence CVE CVE-2023-50495 https://www.cve.org/CVERecord?id=CVE-2023-50495 Référence CVE CVE-2023-50782 https://www.cve.org/CVERecord?id=CVE-2023-50782 Référence CVE CVE-2023-50868 https://www.cve.org/CVERecord?id=CVE-2023-50868 Référence CVE CVE-2023-51074 https://www.cve.org/CVERecord?id=CVE-2023-51074 Référence CVE CVE-2023-51384 https://www.cve.org/CVERecord?id=CVE-2023-51384 Référence CVE CVE-2023-51385 https://www.cve.org/CVERecord?id=CVE-2023-51385 Référence CVE CVE-2023-5156 https://www.cve.org/CVERecord?id=CV

Official advisory ↗
CERT-FR · French · CERTFR-2025-AVI-0855Multiples vulnérabilités dans les produits Juniper Networks

d?id=CVE-2023-43785 Référence CVE CVE-2023-43786 https://www.cve.org/CVERecord?id=CVE-2023-43786 Référence CVE CVE-2023-43787 https://www.cve.org/CVERecord?id=CVE-2023-43787 Référence CVE CVE-2023-44431 https://www.cve.org/CVERecord?id=CVE-2023-44431 Référence CVE CVE-2023-45733 https://www.cve.org/CVERecord?id=CVE-2023-45733 Référence CVE CVE-2023-45866 https://www.cve.org/CVERecord?id=CVE-2023-45866 Référence CVE CVE-2023-46103 https://www.cve.org/CVERecord?id=CVE-2023-46103 Référence CVE CVE-2023-47038 https://www.cve.org/CVERecord?id=CVE-2023-47038 Référence CVE CVE-2023-48161 https://www.cve.org/CVERecord?id=CVE-2023-48161 Référence CVE CVE-2023-4911 https://www.cve.org/CVERecord?id=CVE-2023-4911 Référence CVE CVE-2023-50229 https://www.cve.org/CVERecord?id=CVE-2023-50229 Référence CVE CVE-2023-50230 https://www.cve.org/CVERecord?id=CVE-2023-50230 Référence CVE CVE-2023-51580 https://www.cve.org/CVERecord?id=CVE-2023-51580 Référence CVE CVE-2023-51589 https://www.cve.org/CVERecord?id=CVE-2023-51589 Référence CVE CVE-2023-51592 https://www.cve.org/CVERecord?id=CVE-2023-51592 Référence CVE CVE-2023-51594 https://www.cve.org/CVERecord?id=CVE-2023-51594 Référence CVE CVE-2023-51596 https://www.cve.org/CVERecord?id=CVE-2023-51596 Référence CVE CVE-2023-51764 https://www.cve.org/CVERecord?id=C

Official advisory ↗
CERT-FR · French · CERTFR-2025-AVI-0756Multiples vulnérabilités dans les produits VMware

CVERecord?id=CVE-2023-46219 Référence CVE CVE-2023-4641 https://www.cve.org/CVERecord?id=CVE-2023-4641 Référence CVE CVE-2023-47038 https://www.cve.org/CVERecord?id=CVE-2023-47038 Référence CVE CVE-2023-47039 https://www.cve.org/CVERecord?id=CVE-2023-47039 Référence CVE CVE-2023-47100 https://www.cve.org/CVERecord?id=CVE-2023-47100 Référence CVE CVE-2023-4806 https://www.cve.org/CVERecord?id=CVE-2023-4806 Référence CVE CVE-2023-4807 https://www.cve.org/CVERecord?id=CVE-2023-4807 Référence CVE CVE-2023-4813 https://www.cve.org/CVERecord?id=CVE-2023-4813 Référence CVE CVE-2023-48795 https://www.cve.org/CVERecord?id=CVE-2023-48795 Référence CVE CVE-2023-4911 https://www.cve.org/CVERecord?id=CVE-2023-4911 Référence CVE CVE-2023-51074 https://www.cve.org/CVERecord?id=CVE-2023-51074 Référence CVE CVE-2023-5156 https://www.cve.org/CVERecord?id=CVE-2023-5156 Référence CVE CVE-2023-5189 https://www.cve.org/CVERecord?id=CVE-2023-5189 Référence CVE CVE-2023-52572 https://www.cve.org/CVERecord?id=CVE-2023-52572 Référence CVE CVE-2023-52757 https://www.cve.org/CVERecord?id=CVE-2023-52757 Référence CVE CVE-2023-53034 https://www.cve.org/CVERecord?id=CVE-2023-53034 Référence CVE CVE-2023-5363 https://www.cve.org/CVERecord?id=CVE-2023-5363 Référence CVE CVE-2023-5678 https://www.cve.org/CVERecord?id=CVE-2023

Official advisory ↗
CERT-FR · French · CERTFR-2025-AVI-0492Multiples vulnérabilités dans les produits Siemens

34 (2x230 V AC, 12xFO) (6GK5334-3TS01-4AR3) versions antérieures à V3.1 SCALANCE XRM334 (2x230 V AC, 12xFO) (6GK5334-3TS01-4AR3) versions antérieures à V3.2 SCALANCE XRM334 (2x230 V AC, 8xFO) (6GK5334-2TS01-4AR3) versions antérieures à V3.1 SCALANCE XRM334 (2x230 V AC, 8xFO) (6GK5334-2TS01-4AR3) versions antérieures à V3.2 SCALANCE XRM334 (2x230V AC, 2x10G, 24xSFP, 8xSFP+) (6GK5334-5TS01-4AR3) versions antérieures à V3.1 SCALANCE XRM334 (2x230V AC, 2x10G, 24xSFP, 8xSFP+) (6GK5334-5TS01-4AR3) versions antérieures à V3.2 SIMATIC S7-1500 versions supérieures ou égales àV3.1.5 pour les vulnérabilités CVE-2021-41617, CVE-2023-4527, CVE-2023-4806, CVE-2023-4911, CVE-2023-5363, CVE-2023-6246, CVE-2023-6779, CVE-2023-6780, CVE-2023-28531, CVE-2023-38545, CVE-2023-38546, CVE-2023-44487, CVE-2023-46218, CVE-2023-46219, CVE-2023-48795, CVE-2023-51384, CVE-2023-51385, CVE-2023-52927, CVE-2024-2961, CVE-2024-6119, CVE-2024-6387, CVE-2024-12133, CVE-2024-12243, CVE-2024-24855, CVE-2024-26596, CVE-2024-28085, CVE-2024-33599, CVE-2024-33600, CVE-2024-33601, CVE-2024-33602, CVE-2024-34397, CVE-2024-37370, CVE-2024-37371, CVE-2024-45490, CVE-2024-45491, CVE-2024-45492, CVE-2024-50246, CVE-2024-53166, CVE-2024-57977, CVE-2024-57996, CVE-2024-58005, CVE-2025-4373, CVE-2025-4598, CVE-2025-21701, CVE-2025-21702, C

Official advisory ↗
CERT-FR · French · CERTFR-2023-AVI-1015Multiples vulnérabilités dans les produits Siemens

ERecord?id=CVE-2023-46285 Référence CVE CVE-2023-4806 https://www.cve.org/CVERecord?id=CVE-2023-4806 Référence CVE CVE-2023-4807 https://www.cve.org/CVERecord?id=CVE-2023-4807 Référence CVE CVE-2023-4813 https://www.cve.org/CVERecord?id=CVE-2023-4813 Référence CVE CVE-2023-48427 https://www.cve.org/CVERecord?id=CVE-2023-48427 Référence CVE CVE-2023-48428 https://www.cve.org/CVERecord?id=CVE-2023-48428 Référence CVE CVE-2023-48429 https://www.cve.org/CVERecord?id=CVE-2023-48429 Référence CVE CVE-2023-48430 https://www.cve.org/CVERecord?id=CVE-2023-48430 Référence CVE CVE-2023-48431 https://www.cve.org/CVERecord?id=CVE-2023-48431 Référence CVE CVE-2023-4911 https://www.cve.org/CVERecord?id=CVE-2023-4911 Référence CVE CVE-2023-4921 https://www.cve.org/CVERecord?id=CVE-2023-4921 Référence CVE CVE-2023-49691 https://www.cve.org/CVERecord?id=CVE-2023-49691 Référence CVE CVE-2023-49692 https://www.cve.org/CVERecord?id=CVE-2023-49692 Référence CVE CVE-2023-5156 https://www.cve.org/CVERecord?id=CVE-2023-5156 Référence CVE CVE-2023-5678 https://www.cve.org/CVERecord?id=CVE-2023-5678 Référence CVE CVE-2023-5717 https://www.cve.org/CVERecord?id=CVE-2023-5717 Référence CVE CVE-2023-5981 https://www.cve.org/CVERecord?id=CVE-2023-5981 Gestion détaillée du document le 12 décembre 2023 Version initiale Alerte

Official advisory ↗
CERT-FR · French · CERTFR-2023-AVI-0957Multiples vulnérabilités dans le noyau Linux de RedHat

ve.org/CVERecord?id=CVE-2023-4155 Référence CVE CVE-2023-4206 https://www.cve.org/CVERecord?id=CVE-2023-4206 Référence CVE CVE-2023-4207 https://www.cve.org/CVERecord?id=CVE-2023-4207 Référence CVE CVE-2023-4208 https://www.cve.org/CVERecord?id=CVE-2023-4208 Référence CVE CVE-2023-44487 https://www.cve.org/CVERecord?id=CVE-2023-44487 Référence CVE CVE-2023-4527 https://www.cve.org/CVERecord?id=CVE-2023-4527 Référence CVE CVE-2023-4732 https://www.cve.org/CVERecord?id=CVE-2023-4732 Référence CVE CVE-2023-4806 https://www.cve.org/CVERecord?id=CVE-2023-4806 Référence CVE CVE-2023-4813 https://www.cve.org/CVERecord?id=CVE-2023-4813 Référence CVE CVE-2023-4911 https://www.cve.org/CVERecord?id=CVE-2023-4911 Gestion détaillée du document le 17 novembre 2023 Version initiale Alertes Avis Bulletins d’actualités Mentions légales Conditions générales À propos Contact cyber.gouv.fr service-public.fr legifrance.gouv.fr info.gouv.fr france.fr info.gouv.fr/risques Premier Ministre / Secrétariat Général de la Défense et de la Sécurité Nationale / Agence nationale de la sécurité des systèmes d'information

Official advisory ↗
CERT-FR · French · CERTFR-2023-AVI-0804Vulnérabilité dans GNU LIBC

Une vulnérabilité a été découverte dans GNU LIBC. Elle permet à un attaquant de provoquer une élévation de privilèges.

Official advisory ↗
JVN iPedia · Japanese · JVNDB-2023-013913GNU Project の GNU C Library 等複数ベンダの製品における境界外書き込みに関する脆弱性

GNU Project の GNU C Library 等複数ベンダの製品には、境界外書き込みに関する脆弱性が存在します。

Official advisory ↗
KISA KrCERT/CC · Korean · KNVD-6043美 CISA 발표 주요 Exploit 정보공유(Update. 2023-11-21)

GNU C Library's dynamic loader ld.so contains a buffer overflow vulnerability when processing the GLIBC_TUNABLES environment variable, allowing a local attacker to execute code with elevated privileges.

Official advisory ↗
NCSC-NL · Dutch · NCSC-2025-0187Kwetsbaarheden verholpen in Siemens producten

De kwetsbaarheden stellen een kwaadwillende mogelijk in staat aanvallen uit te voeren die kunnen leiden tot de volgende categorieën schade: - Denial-of-Service (DoS) - Manipulatie van gegevens - Omzeilen van een beveiligingsmaatregel - Omzeilen van authenticatie - (Remote) code execution (root/admin rechten) - (Remote) code execution (Gebruikersrechten) - Toegang tot systeemgegevens - Toegang tot gevoelige gegevens - Spoofing De kwaadwillende heeft hiervoor toegang nodig tot de productieomgeving. Het is goed gebruik een dergelijke omgeving niet publiek toegankelijk te hebben.

Official advisory ↗
03

Patch and workaround

Operational remediation based on structured source evidence.

Status
?Patch availability is based on structured fixed-version fields and authoritative update references. If no fix is verified, check the vendor advisory before making a change.
Fix availability varies by product
Affected
Fixed
Action
Use the product-specific evidence above. Patch only products with a verified fixed release, and keep every affected or under-investigation state without a matching fix in the remediation queue.
Workaround
Limit access to the interactive shell of the additional GNU/Linux subssytem to trusted personnel only.
04

Evidence and provenance

Published 3 Oct 2023 · Last source change 14 Jul 2026, 11:59 UTC · CWE-122 · Heap-based Buffer Overflow

CVE recordCVE.org · 5.2
CVSS sourceCNA
EPSS source
?The date BlackTree first stored a score for this CVE from the daily FIRST EPSS feed.
FIRST · tracked since 2026-08-14
European sourceENISA EUVD · EUVD-2023-54750
Product sourceVendor CSAF · Siemens ProductCERT
Remediation sourceVendor CSAF · Siemens ProductCERT
CWE sourceCNA
NVD statusNVD enriched

Core structured fields are present and their contributing authorities are shown above.

Material change intelligence

What changed after publication

View recent updates ↗
  1. Affected versionsThe structured affected or fixed version information changed.
    Before
    2.34 < 2.39 · Fixed: 0:2.28-225.el8_8.6 < *; 0:2.28-189.6.el8_6 < *; 0:2.34-60.el9_2.7 < *; 0:2.34-28.el9_0.4 < *
    After
    2.34 < 2.39 · Fixed: Red Hat Enterprise Linux 8: 0:2.28-225.el8_8.6 < *; Red Hat Enterprise Linux 8.6 Extended Update Support: 0:2.28-189.6.el8_6 < *; Red Hat Enterprise Linux 9: 0:2.34-60.el9_2.7 < *; Red Hat Enterprise Linux 9.0 Extended Update Support: 0:2.34-28.el9_0.4 < *; Red Hat Virtualization 4 for Red Hat Enterprise Linux 8: 0:2.28-189.6.el8_6 < *, 0:4.5.3-10.el8ev < *, 0:4.5.3-202312060823_8.6 < *
    CNA ↗
Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
CVE published
Added to CISA KEV
Fixed release or patch reference recorded
ENISA EUVD · EUVD-2023-54750↗Vendor CSAF · Siemens ProductCERT · Siemens SSA-082556↗CISA KEV record↗Patch or update reference↗CVE authority or vendor reference · Red Hat RHSA-2023:5453↗Public exploit reference↗Public exploit reference↗Official CVE record (CNA and ADP data)↗NVD record↗
Technical terms and abbreviations used in this report
CVE
Common Vulnerabilities and Exposures: the public identifier for one disclosed vulnerability.
CVSS
Common Vulnerability Scoring System: a technical severity framework; it is not patching priority by itself.
EPSS
Exploit Prediction Scoring System: FIRST's estimate of the probability that exploitation activity will be observed in the next 30 days; it is a forecast, not confirmation.
CWE
Common Weakness Enumeration: the standard category describing the underlying software or hardware weakness.
CNA
CVE Numbering Authority: an organisation authorised to assign and publish CVE records.
CISA ADP
Cybersecurity and Infrastructure Security Agency Authorized Data Publisher: structured enrichment added to a CVE record.
NVD
National Vulnerability Database: NIST's enrichment service for CVE records.
CERT / CSIRT
A computer security incident response team that publishes warnings or coordinates incident response.
PoC
Proof of concept: public material that demonstrates or helps reproduce exploitation.
CSAF
Common Security Advisory Framework: a machine-readable format for security advisories.
LoTL
Living off the land: abuse of legitimate tools or system functions during an attack.
Free version - for non-commercial use only.CVE-2023-4911 · cve.blacktree.nl