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Full vulnerability report · 2022
CVE-2022-27779High confidence

libcurl wrongly allows cookies to be set for Top Level Domains (TLDs) if thehost name is provided with a trailing dot.curl can be told to receive and send cookies

n/a · https://github.com/curl/curl

5.3MediumCVSS 3.1
Recommended action
Within 7 days

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

Patch available
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.

1 current
SSA-398330 · CSAF 2.0 · revision 18 · interimSiemens ProductCERTSSA-398330: Vulnerabilities in the additional GNU/Linux subsystem of the SIMATIC S7-1500 CPU 1518(F)-4 PN/DP MFP >= V3.1.0 and < 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)
  • SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0)
  • SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0)
  • SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0)
  • SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)
Summary
libcurl wrongly allows cookies to be set for Top Level Domains (TLDs) if thehost name is provided with a trailing dot.curl can be told to receive and send cookies. curl's "cookie engine" can bebuilt with or without [Public Suffix List](https://publicsuffix.org/)awareness. If PSL support not provided, a more rudimentary check exists to atleast prevent cookies from being set on TLDs. This check was broken if thehost name in the URL uses a trailing dot.This can allow arbitrary sites to set cookies that then would get sent to adifferent and unrelated site or domain.
Remediation
Update to V3.1.5 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.

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-2022-32274

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

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

Patch available
01

What, why and how

libcurl wrongly allows cookies to be set for Top Level Domains (TLDs) if thehost name is provided with a trailing dot.curl can be told to receive and send cookies. curl's "cookie engine" can bebuilt with or without [Public Suffix List](https://publicsuffix.org/)awareness. If PSL support not provided, a more rudimentary check exists to atleast prevent cookies from being set on TLDs. This check was broken if thehost name in the URL uses a trailing dot.This can allow arbitrary sites to set cookies that then would get sent to adifferent and unrelated site or domain.

What

libcurl wrongly allows cookies to be set for Top Level Domains (TLDs) if thehost name is provided with a trailing dot.curl can be told to receive and send cookies. curl's "cookie engine" can bebuilt with or without [Public Suffix List](https://publicsuffix.org/)awareness. If PSL support not provided, a more rudimentary check exists to atleast prevent cookies from being set on TLDs. This check was broken if thehost name in the URL uses a trailing dot.This can allow arbitrary sites to set cookies that then would get sent to adifferent and unrelated site or domain.

Why

The code transmits data to another actor, but a portion of the data includes sensitive information that should not be accessible to that actor.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. If successful, the issue may cause the confidentiality, integrity or availability impact described by the vendor.

What

libcurl wrongly allows cookies to be set for Top Level Domains (TLDs) if thehost name is provided with a trailing dot.curl can be told to receive and send cookies. curl's "cookie engine" can bebuilt with or without [Public Suffix List](https://publicsuffix.org/)awareness. If PSL support not provided, a more rudimentary check exists to atleast prevent cookies from being set on TLDs. This check was broken if thehost name in the URL uses a trailing dot.This can allow arbitrary sites to set cookies that then would get sent to adifferent and unrelated site or domain.

Why

The code transmits data to another actor, but a portion of the data includes sensitive information that should not be accessible to that actor.

How

An attacker operating through a network path may attempt exploitation without authentication or user interaction. 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
a network path → Insertion of Sensitive Information Into Sent Data → cause the confidentiality, integrity or availability impact described by the vendor
Attack surface
Network
Privileges required
None: unauthenticated exploitation is possible
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-201 ↗

CWE-201: Insertion of Sensitive Information Into Sent Data. The code transmits data to another actor, but a portion of the data includes sensitive information that should not be accessible to that actor.

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

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

AVNetworkAttack vector: The vulnerable component can be reached over a network.ACLowAttack complexity: No specialised conditions are required beyond attacker-controlled input.PRNonePrivileges required: The attacker does not need an account or existing privileges.UINoneUser interaction: No action by another user is required.SUnchangedScope: The security impact remains within the vulnerable component's authority.CLowConfidentiality impact: A successful attack can cause a limited loss.INoneIntegrity impact: No direct loss is represented by this metric.ANoneAvailability impact: No direct loss is represented by this metric.
Post-exploitation / living off the land
No specific living-off-the-land technique is confirmed in the structured sources. Monitor normal administration tools for activity inconsistent with the affected service's baseline.
NetworkUnauthenticatedCWE-201Public 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-2023-2229Splunk Splunk Enterprise: Mehrere Schwachstellen

Ein entfernter, authentifizierter Angreifer kann mehrere Schwachstellen in Splunk Splunk Enterprise ausnutzen, um beliebigen Code auszuführen, einen 'Denial of Service'-Zustand zu verursachen, seine Privilegien zu erweitern und weitere, nicht spezifizierte Auswirkungen zu verursachen.

Official advisory
BSI · German · WID-SEC-W-2023-1350Splunk Splunk Enterprise: Mehrere Schwachstellen in Komponenten von Drittanbietern

Ein Angreifer kann mehrere Schwachstellen in Splunk Splunk Enterprise in diversen Komponenten von Drittanbietern ausnutzen, um einen nicht näher spezifizierten Angriff durchzuführen.

Official advisory
BSI · German · WID-SEC-W-2022-0277cURL: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in cURL ausnutzen, um Informationen offenzulegen, Sicherheitsvorkehrungen zu umgehen, Dateien zu löschen oder einen Denial of Service zu verursachen.

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

d?id=CVE-2022-23218 Référence CVE CVE-2022-23219 https://www.cve.org/CVERecord?id=CVE-2022-23219 Référence CVE CVE-2022-23308 https://www.cve.org/CVERecord?id=CVE-2022-23308 Référence CVE CVE-2022-23960 https://www.cve.org/CVERecord?id=CVE-2022-23960 Référence CVE CVE-2022-26878 https://www.cve.org/CVERecord?id=CVE-2022-26878 Référence CVE CVE-2022-27672 https://www.cve.org/CVERecord?id=CVE-2022-27672 Référence CVE CVE-2022-27774 https://www.cve.org/CVERecord?id=CVE-2022-27774 Référence CVE CVE-2022-27775 https://www.cve.org/CVERecord?id=CVE-2022-27775 Référence CVE CVE-2022-27776 https://www.cve.org/CVERecord?id=CVE-2022-27776 Référence CVE CVE-2022-27779 https://www.cve.org/CVERecord?id=CVE-2022-27779 Référence CVE CVE-2022-27780 https://www.cve.org/CVERecord?id=CVE-2022-27780 Référence CVE CVE-2022-27781 https://www.cve.org/CVERecord?id=CVE-2022-27781 Référence CVE CVE-2022-27782 https://www.cve.org/CVERecord?id=CVE-2022-27782 Référence CVE CVE-2022-28805 https://www.cve.org/CVERecord?id=CVE-2022-28805 Référence CVE CVE-2022-29458 https://www.cve.org/CVERecord?id=CVE-2022-29458 Référence CVE CVE-2022-29824 https://www.cve.org/CVERecord?id=CVE-2022-29824 Référence CVE CVE-2022-30115 https://www.cve.org/CVERecord?id=CVE-2022-30115 Référence CVE CVE-2022-32205 https://www.cve.org/CVERecord?id=

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

d?id=CVE-2022-25236 Référence CVE CVE-2022-25313 https://www.cve.org/CVERecord?id=CVE-2022-25313 Référence CVE CVE-2022-25314 https://www.cve.org/CVERecord?id=CVE-2022-25314 Référence CVE CVE-2022-25315 https://www.cve.org/CVERecord?id=CVE-2022-25315 Référence CVE CVE-2022-26488 https://www.cve.org/CVERecord?id=CVE-2022-26488 Référence CVE CVE-2022-27774 https://www.cve.org/CVERecord?id=CVE-2022-27774 Référence CVE CVE-2022-27775 https://www.cve.org/CVERecord?id=CVE-2022-27775 Référence CVE CVE-2022-27776 https://www.cve.org/CVERecord?id=CVE-2022-27776 Référence CVE CVE-2022-27778 https://www.cve.org/CVERecord?id=CVE-2022-27778 Référence CVE CVE-2022-27779 https://www.cve.org/CVERecord?id=CVE-2022-27779 Référence CVE CVE-2022-27780 https://www.cve.org/CVERecord?id=CVE-2022-27780 Référence CVE CVE-2022-27781 https://www.cve.org/CVERecord?id=CVE-2022-27781 Référence CVE CVE-2022-27782 https://www.cve.org/CVERecord?id=CVE-2022-27782 Référence CVE CVE-2022-27943 https://www.cve.org/CVERecord?id=CVE-2022-27943 Référence CVE CVE-2022-28321 https://www.cve.org/CVERecord?id=CVE-2022-28321 Référence CVE CVE-2022-29155 https://www.cve.org/CVERecord?id=CVE-2022-29155 Référence CVE CVE-2022-29824 https://www.cve.org/CVERecord?id=CVE-2022-29824 Référence CVE CVE-2022-30115 https://www.cve.org/CVERecord?id=

Official advisory
CERT-FR · French · CERTFR-2023-AVI-0701Multiples vulnérabilités dans Splunk

d?id=CVE-2022-24999 Référence CVE CVE-2022-25881 https://www.cve.org/CVERecord?id=CVE-2022-25881 Référence CVE CVE-2022-27191 https://www.cve.org/CVERecord?id=CVE-2022-27191 Référence CVE CVE-2022-27536 https://www.cve.org/CVERecord?id=CVE-2022-27536 Référence CVE CVE-2022-27664 https://www.cve.org/CVERecord?id=CVE-2022-27664 Référence CVE CVE-2022-27774 https://www.cve.org/CVERecord?id=CVE-2022-27774 Référence CVE CVE-2022-27775 https://www.cve.org/CVERecord?id=CVE-2022-27775 Référence CVE CVE-2022-27776 https://www.cve.org/CVERecord?id=CVE-2022-27776 Référence CVE CVE-2022-27778 https://www.cve.org/CVERecord?id=CVE-2022-27778 Référence CVE CVE-2022-27779 https://www.cve.org/CVERecord?id=CVE-2022-27779 Référence CVE CVE-2022-27780 https://www.cve.org/CVERecord?id=CVE-2022-27780 Référence CVE CVE-2022-27781 https://www.cve.org/CVERecord?id=CVE-2022-27781 Référence CVE CVE-2022-27782 https://www.cve.org/CVERecord?id=CVE-2022-27782 Référence CVE CVE-2022-28131 https://www.cve.org/CVERecord?id=CVE-2022-28131 Référence CVE CVE-2022-28327 https://www.cve.org/CVERecord?id=CVE-2022-28327 Référence CVE CVE-2022-2879 https://www.cve.org/CVERecord?id=CVE-2022-2879 Référence CVE CVE-2022-2880 https://www.cve.org/CVERecord?id=CVE-2022-2880 Référence CVE CVE-2022-29526 https://www.cve.org/CVERecord?id=CVE-

Official advisory
CERT-FR · French · CERTFR-2023-AVI-0428Multiples vulnérabilités dans les produits Splunk

d?id=CVE-2022-24921 Référence CVE CVE-2022-24999 https://www.cve.org/CVERecord?id=CVE-2022-24999 Référence CVE CVE-2022-25858 https://www.cve.org/CVERecord?id=CVE-2022-25858 Référence CVE CVE-2022-27191 https://www.cve.org/CVERecord?id=CVE-2022-27191 Référence CVE CVE-2022-27664 https://www.cve.org/CVERecord?id=CVE-2022-27664 Référence CVE CVE-2022-27774 https://www.cve.org/CVERecord?id=CVE-2022-27774 Référence CVE CVE-2022-27775 https://www.cve.org/CVERecord?id=CVE-2022-27775 Référence CVE CVE-2022-27776 https://www.cve.org/CVERecord?id=CVE-2022-27776 Référence CVE CVE-2022-27778 https://www.cve.org/CVERecord?id=CVE-2022-27778 Référence CVE CVE-2022-27779 https://www.cve.org/CVERecord?id=CVE-2022-27779 Référence CVE CVE-2022-27780 https://www.cve.org/CVERecord?id=CVE-2022-27780 Référence CVE CVE-2022-27781 https://www.cve.org/CVERecord?id=CVE-2022-27781 Référence CVE CVE-2022-27782 https://www.cve.org/CVERecord?id=CVE-2022-27782 Référence CVE CVE-2022-28131 https://www.cve.org/CVERecord?id=CVE-2022-28131 Référence CVE CVE-2022-28327 https://www.cve.org/CVERecord?id=CVE-2022-28327 Référence CVE CVE-2022-2879 https://www.cve.org/CVERecord?id=CVE-2022-2879 Référence CVE CVE-2022-2880 https://www.cve.org/CVERecord?id=CVE-2022-2880 Référence CVE CVE-2022-29526 https://www.cve.org/CVERecord?id=CVE-

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.
Patch available
Affected
SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AB0); SIMATIC S7-1500 CPU 1518-4 PN/DP MFP (6ES7518-4AX00-1AC0); SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AB0); SIMATIC S7-1500 CPU 1518F-4 PN/DP MFP (6ES7518-4FX00-1AC0); SIPLUS S7-1500 CPU 1518-4 PN/DP MFP (6AG1518-4AX00-4AC0)
Fixed
No fixed version is explicitly recorded in the structured CVE data.
Action
Update to V3.1.5 or later version
Workaround
No verified workaround is recorded. If business-safe, reduce exposure to the affected interface and allow only trusted sources until authoritative guidance is available.
04

Evidence and provenance

Published 1 Jun 2022 · Last source change 3 Aug 2024, 05:33 UTC · CWE-201 · Insertion of Sensitive Information Into Sent Data

CVE recordCVE.org · 5.1
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-2022-32274
Product sourceVendor CSAF · Siemens ProductCERT
Remediation sourceVendor CSAF · Siemens ProductCERT
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
CVE published
ENISA EUVD · EUVD-2022-32274↗Vendor CSAF · Siemens ProductCERT↗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-2022-27779 · cve.blacktree.nl