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Full vulnerability report · 2023
CVE-2023-2603High confidence

A vulnerability was found in libcap

n/a · libcap

7.8HighCVSS 3.1
Recommended action
Within 7 days

High technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance.

Fix not verified
Optional official sources

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

Select the national-authority views to include. The exact source language is shown on each matched advisory. Your choice is remembered on this device and encoded in the shareable URL.

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-2023-34077

No EUVD known-exploited evidence

ENISA has published the identifier mapping but no EUVD description has been stored yet.

EUVD state
Present in the current official mapping
Known exploitation
Not present in the current ENISA EUVD known-exploited dataset. This is not proof of no exploitation.
ENISA score
Not supplied in the stored EUVD record
Advisory evidence
No linked advisory details stored yet
Recommended actionWithin 7 days

High technical severity with public exploit material referenced by a structured source; prioritise exposed affected systems while verifying vendor guidance.

Fix not verified
01

What, why and how

A vulnerability was found in libcap. This issue occurs in the _libcap_strdup() function and can lead to an integer overflow if the input string is close to 4GiB.

What

A vulnerability was found in libcap. This issue occurs in the _libcap_strdup() function and can lead to an integer overflow if the input string is close to 4GiB.

Why

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

A vulnerability was found in libcap. This issue occurs in the _libcap_strdup() function and can lead to an integer overflow if the input string is close to 4GiB.

Why

The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

How

An attacker operating through local access may attempt exploitation with low privileges. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

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.
No confirmed evidence

No CISA KEV match was present at the last successful refresh. This means no confirmation from that source, not proof of no exploitation.

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 → Integer Overflow or Wraparound → cause the confidentiality, integrity or availability impact described by the vendor
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-190

CWE-190: Integer Overflow or Wraparound. The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.

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
The issue can support a local privilege or sandbox boundary transition; normal system utilities may then be available in the gained context.
CWE-190Public exploit reference
A

Official authority intelligence

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

BSI · German · WID-SEC-W-2024-1307Red Hat OpenShift Service Mesh Containers: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in Red Hat OpenShift Service Mesh Containers ausnutzen, um Dateien zu manipulieren, einen 'Denial of Service'-Zustand erzuegen, beliebigen Code auszuführen, vertrauliche Informationen offenzulegen oder weitere nicht spezifizierte Angriffe durchzuführen.

Official advisory
BSI · German · WID-SEC-W-2023-2902IBM Security Guardium: Mehrere Schwachstellen

Ein entfernter, anonymer Angreifer kann mehrere Schwachstellen in IBM Security Guardium ausnutzen, um seine Privilegien zu erweitern, beliebigen Programmcode auszuführen, Sicherheitsvorkehrungen zu umgehen, Dateien zu manipulieren, einen Denial of Service Zustand herbeizuführen oder Informationen offenzulegen.

Official advisory
BSI · German · WID-SEC-W-2023-2679Oracle Communications: Mehrere Schwachstellen

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

Official advisory
BSI · German · WID-SEC-W-2023-2017Red Hat Enterprise Linux (libcap): Mehrere Schwachstellen

Ein lokaler Angreifer kann mehrere Schwachstellen in der "libcap" Komponente von Red Hat Enterprise Linux ausnutzen, um einen Denial of Service Angriff durchzuführen und um nicht näher beschriebene Auswirkungen zu erzielen.

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

ord?id=CVE-2023-24056 Référence CVE CVE-2023-25433 https://www.cve.org/CVERecord?id=CVE-2023-25433 Référence CVE CVE-2023-25434 https://www.cve.org/CVERecord?id=CVE-2023-25434 Référence CVE CVE-2023-25435 https://www.cve.org/CVERecord?id=CVE-2023-25435 Référence CVE CVE-2023-25584 https://www.cve.org/CVERecord?id=CVE-2023-25584 Référence CVE CVE-2023-25585 https://www.cve.org/CVERecord?id=CVE-2023-25585 Référence CVE CVE-2023-25586 https://www.cve.org/CVERecord?id=CVE-2023-25586 Référence CVE CVE-2023-25588 https://www.cve.org/CVERecord?id=CVE-2023-25588 Référence CVE CVE-2023-2602 https://www.cve.org/CVERecord?id=CVE-2023-2602 Référence CVE CVE-2023-2603 https://www.cve.org/CVERecord?id=CVE-2023-2603 Référence CVE CVE-2023-26965 https://www.cve.org/CVERecord?id=CVE-2023-26965 Référence CVE CVE-2023-26966 https://www.cve.org/CVERecord?id=CVE-2023-26966 Référence CVE CVE-2023-2731 https://www.cve.org/CVERecord?id=CVE-2023-2731 Référence CVE CVE-2023-27533 https://www.cve.org/CVERecord?id=CVE-2023-27533 Référence CVE CVE-2023-27534 https://www.cve.org/CVERecord?id=CVE-2023-27534 Référence CVE CVE-2023-27535 https://www.cve.org/CVERecord?id=CVE-2023-27535 Référence CVE CVE-2023-27536 https://www.cve.org/CVERecord?id=CVE-2023-27536 Référence CVE CVE-2023-27538 https://www.cve.org/CVERecord?id=CVE

Official advisory
CERT-FR · French · CERTFR-2025-AVI-1057Multiples vulnérabilités dans les produits VMware

/CVERecord?id=CVE-2023-1255 Référence CVE CVE-2023-1380 https://www.cve.org/CVERecord?id=CVE-2023-1380 Référence CVE CVE-2023-1838 https://www.cve.org/CVERecord?id=CVE-2023-1838 Référence CVE CVE-2023-2156 https://www.cve.org/CVERecord?id=CVE-2023-2156 Référence CVE CVE-2023-23914 https://www.cve.org/CVERecord?id=CVE-2023-23914 Référence CVE CVE-2023-23915 https://www.cve.org/CVERecord?id=CVE-2023-23915 Référence CVE CVE-2023-23916 https://www.cve.org/CVERecord?id=CVE-2023-23916 Référence CVE CVE-2023-24329 https://www.cve.org/CVERecord?id=CVE-2023-24329 Référence CVE CVE-2023-2602 https://www.cve.org/CVERecord?id=CVE-2023-2602 Référence CVE CVE-2023-2603 https://www.cve.org/CVERecord?id=CVE-2023-2603 Référence CVE CVE-2023-2650 https://www.cve.org/CVERecord?id=CVE-2023-2650 Référence CVE CVE-2023-27043 https://www.cve.org/CVERecord?id=CVE-2023-27043 Référence CVE CVE-2023-27533 https://www.cve.org/CVERecord?id=CVE-2023-27533 Référence CVE CVE-2023-27534 https://www.cve.org/CVERecord?id=CVE-2023-27534 Référence CVE CVE-2023-27535 https://www.cve.org/CVERecord?id=CVE-2023-27535 Référence CVE CVE-2023-27536 https://www.cve.org/CVERecord?id=CVE-2023-27536 Référence CVE CVE-2023-27538 https://www.cve.org/CVERecord?id=CVE-2023-27538 Référence CVE CVE-2023-28319 https://www.cve.org/CVERecord?id=CVE

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

ord?id=CVE-2023-24751 Référence CVE CVE-2023-24752 https://www.cve.org/CVERecord?id=CVE-2023-24752 Référence CVE CVE-2023-24754 https://www.cve.org/CVERecord?id=CVE-2023-24754 Référence CVE CVE-2023-24755 https://www.cve.org/CVERecord?id=CVE-2023-24755 Référence CVE CVE-2023-24756 https://www.cve.org/CVERecord?id=CVE-2023-24756 Référence CVE CVE-2023-24757 https://www.cve.org/CVERecord?id=CVE-2023-24757 Référence CVE CVE-2023-24758 https://www.cve.org/CVERecord?id=CVE-2023-24758 Référence CVE CVE-2023-25193 https://www.cve.org/CVERecord?id=CVE-2023-25193 Référence CVE CVE-2023-2602 https://www.cve.org/CVERecord?id=CVE-2023-2602 Référence CVE CVE-2023-2603 https://www.cve.org/CVERecord?id=CVE-2023-2603 Référence CVE CVE-2023-2609 https://www.cve.org/CVERecord?id=CVE-2023-2609 Référence CVE CVE-2023-2650 https://www.cve.org/CVERecord?id=CVE-2023-2650 Référence CVE CVE-2023-26785 https://www.cve.org/CVERecord?id=CVE-2023-26785 Référence CVE CVE-2023-26965 https://www.cve.org/CVERecord?id=CVE-2023-26965 Référence CVE CVE-2023-27043 https://www.cve.org/CVERecord?id=CVE-2023-27043 Référence CVE CVE-2023-27102 https://www.cve.org/CVERecord?id=CVE-2023-27102 Référence CVE CVE-2023-2731 https://www.cve.org/CVERecord?id=CVE-2023-2731 Référence CVE CVE-2023-27533 https://www.cve.org/CVERecord?id=CVE-202

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

ERecord?id=CVE-2022-24808 Référence CVE CVE-2022-24810 https://www.cve.org/CVERecord?id=CVE-2022-24810 Référence CVE CVE-2022-48622 https://www.cve.org/CVERecord?id=CVE-2022-48622 Référence CVE CVE-2023-0464 https://www.cve.org/CVERecord?id=CVE-2023-0464 Référence CVE CVE-2023-21102 https://www.cve.org/CVERecord?id=CVE-2023-21102 Référence CVE CVE-2023-2124 https://www.cve.org/CVERecord?id=CVE-2023-2124 Référence CVE CVE-2023-2235 https://www.cve.org/CVERecord?id=CVE-2023-2235 Référence CVE CVE-2023-22655 https://www.cve.org/CVERecord?id=CVE-2023-22655 Référence CVE CVE-2023-25193 https://www.cve.org/CVERecord?id=CVE-2023-25193 Référence CVE CVE-2023-2603 https://www.cve.org/CVERecord?id=CVE-2023-2603 Référence CVE CVE-2023-27349 https://www.cve.org/CVERecord?id=CVE-2023-27349 Référence CVE CVE-2023-28466 https://www.cve.org/CVERecord?id=CVE-2023-28466 Référence CVE CVE-2023-28746 https://www.cve.org/CVERecord?id=CVE-2023-28746 Référence CVE CVE-2023-3090 https://www.cve.org/CVERecord?id=CVE-2023-3090 Référence CVE CVE-2023-31248 https://www.cve.org/CVERecord?id=CVE-2023-31248 Référence CVE CVE-2023-32233 https://www.cve.org/CVERecord?id=CVE-2023-32233 Référence CVE CVE-2023-3390 https://www.cve.org/CVERecord?id=CVE-2023-3390 Référence CVE CVE-2023-35001 https://www.cve.org/CVERecord?id=CVE-2

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

ord?id=CVE-2023-22068 Référence CVE CVE-2023-22070 https://www.cve.org/CVERecord?id=CVE-2023-22070 Référence CVE CVE-2023-22078 https://www.cve.org/CVERecord?id=CVE-2023-22078 Référence CVE CVE-2023-22084 https://www.cve.org/CVERecord?id=CVE-2023-22084 Référence CVE CVE-2023-22097 https://www.cve.org/CVERecord?id=CVE-2023-22097 Référence CVE CVE-2023-22103 https://www.cve.org/CVERecord?id=CVE-2023-22103 Référence CVE CVE-2023-22114 https://www.cve.org/CVERecord?id=CVE-2023-22114 Référence CVE CVE-2023-24329 https://www.cve.org/CVERecord?id=CVE-2023-24329 Référence CVE CVE-2023-2602 https://www.cve.org/CVERecord?id=CVE-2023-2602 Référence CVE CVE-2023-2603 https://www.cve.org/CVERecord?id=CVE-2023-2603 Référence CVE CVE-2023-27043 https://www.cve.org/CVERecord?id=CVE-2023-27043 Référence CVE CVE-2023-27535 https://www.cve.org/CVERecord?id=CVE-2023-27535 Référence CVE CVE-2023-27536 https://www.cve.org/CVERecord?id=CVE-2023-27536 Référence CVE CVE-2023-27537 https://www.cve.org/CVERecord?id=CVE-2023-27537 Référence CVE CVE-2023-27538 https://www.cve.org/CVERecord?id=CVE-2023-27538 Référence CVE CVE-2023-28320 https://www.cve.org/CVERecord?id=CVE-2023-28320 Référence CVE CVE-2023-28321 https://www.cve.org/CVERecord?id=CVE-2023-28321 Référence CVE CVE-2023-28322 https://www.cve.org/CVERecord?id=C

Official advisory
CERT-FR · French · CERTFR-2024-AVI-0297Multiples vulnérabilités dans Juniper

rg/CVERecord?id=CVE-2023-0286 Référence CVE CVE-2023-0401 https://www.cve.org/CVERecord?id=CVE-2023-0401 Référence CVE CVE-2023-0466 https://www.cve.org/CVERecord?id=CVE-2023-0466 Référence CVE CVE-2023-0809 https://www.cve.org/CVERecord?id=CVE-2023-0809 Référence CVE CVE-2023-1428 https://www.cve.org/CVERecord?id=CVE-2023-1428 Référence CVE CVE-2023-2253 https://www.cve.org/CVERecord?id=CVE-2023-2253 Référence CVE CVE-2023-23914 https://www.cve.org/CVERecord?id=CVE-2023-23914 Référence CVE CVE-2023-23915 https://www.cve.org/CVERecord?id=CVE-2023-23915 Référence CVE CVE-2023-23931 https://www.cve.org/CVERecord?id=CVE-2023-23931 Référence CVE CVE-2023-2603 https://www.cve.org/CVERecord?id=CVE-2023-2603 Référence CVE CVE-2023-2650 https://www.cve.org/CVERecord?id=CVE-2023-2650 Référence CVE CVE-2023-27043 https://www.cve.org/CVERecord?id=CVE-2023-27043 Référence CVE CVE-2023-28366 https://www.cve.org/CVERecord?id=CVE-2023-28366 Référence CVE CVE-2023-29491 https://www.cve.org/CVERecord?id=CVE-2023-29491 Référence CVE CVE-2023-32681 https://www.cve.org/CVERecord?id=CVE-2023-32681 Référence CVE CVE-2023-32731 https://www.cve.org/CVERecord?id=CVE-2023-32731 Référence CVE CVE-2023-32732 https://www.cve.org/CVERecord?id=CVE-2023-32732 Référence CVE CVE-2023-3446 https://www.cve.org/CVERecord?id=CVE-

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

.org/CVERecord?id=CVE-2023-1252 Référence CVE CVE-2023-1382 https://www.cve.org/CVERecord?id=CVE-2023-1382 Référence CVE CVE-2023-1855 https://www.cve.org/CVERecord?id=CVE-2023-1855 Référence CVE CVE-2023-1989 https://www.cve.org/CVERecord?id=CVE-2023-1989 Référence CVE CVE-2023-1998 https://www.cve.org/CVERecord?id=CVE-2023-1998 Référence CVE CVE-2023-22652 https://www.cve.org/CVERecord?id=CVE-2023-22652 Référence CVE CVE-2023-23455 https://www.cve.org/CVERecord?id=CVE-2023-23455 Référence CVE CVE-2023-2513 https://www.cve.org/CVERecord?id=CVE-2023-2513 Référence CVE CVE-2023-2602 https://www.cve.org/CVERecord?id=CVE-2023-2602 Référence CVE CVE-2023-2603 https://www.cve.org/CVERecord?id=CVE-2023-2603 Référence CVE CVE-2023-26545 https://www.cve.org/CVERecord?id=CVE-2023-26545 Référence CVE CVE-2023-28328 https://www.cve.org/CVERecord?id=CVE-2023-28328 Référence CVE CVE-2023-28484 https://www.cve.org/CVERecord?id=CVE-2023-28484 Référence CVE CVE-2023-28772 https://www.cve.org/CVERecord?id=CVE-2023-28772 Référence CVE CVE-2023-29469 https://www.cve.org/CVERecord?id=CVE-2023-29469 Référence CVE CVE-2023-30456 https://www.cve.org/CVERecord?id=CVE-2023-30456 Référence CVE CVE-2023-31084 https://www.cve.org/CVERecord?id=CVE-2023-31084 Référence CVE CVE-2023-3141 https://www.cve.org/CVERecord?id=CV

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 not verified
Affected
NA
Fixed
No fixed version is explicitly recorded in the structured CVE data.
Action
No verified patch reference is present in the current structured sources. Check the vendor advisory before making a change.
Workaround
No verified workaround is recorded. Limit untrusted access and use least privilege until authoritative guidance is available.
04

Evidence and provenance

Published 6 Jun 2023 · Last source change 2 Dec 2025, 20:20 UTC · CWE-190 · Integer Overflow or Wraparound

CVE recordCVE.org · 5.2
CVSS sourceNIST NVD
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-2023-34077
Product sourceCNA
Remediation sourceCVE/CNA references
CWE sourceCNA
NVD statusNVD modified after enrichment

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

Material change intelligence

What changed after publication

View recent updates →

No material field changes have been recorded since change tracking began. Routine source refreshes and cosmetic edits are intentionally excluded.

Material fields only · duplicate refreshes suppressed · history retained for the configured operational retention period
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-2023-2603 · cve.blacktree.nl