Cyber Resilience

CVE-2023-6512

Debian Linux 11.0 … 12.0

Published
06 December 2023
Modified
28 May 2025
Patch / advisory
View advisory
CVSS Score v3.1 6.5
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/A:N
EPSS Score 0.013 67th percentile
Risk Priority 53 floored blend · peak EPSS

Summary

CVE-2023-6512 is a medium-severity Inappropriate Encoding for Output Context (CWE-838) vulnerability in Debian Debian Linux. Its CVSS base score is 6.5 (Medium).

Operationally, exploitation aligns with the MITRE ATT&CK technique Content Injection (T1659); ranked in the top 33% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.

EU & UK References

Vulnerability Data

Inappropriate implementation in Web Browser UI in Google Chrome prior to 120.0.6099.62 allowed a remote attacker to potentially spoof the contents of an iframe dialog context menu via a crafted HTML page. (Chromium security severity: Low)

CWE(s)
NVD-CWE-noinfoCWE-838

Related Threats

MITRE ATT&CK Enterprise Techniques

T1659 Content Injection Initial Access
Adversaries may gain access and continuously communicate with victims by injecting malicious content into systems through online network traffic.
attack.mitre.org →
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
T1203 Exploitation for Client Execution Execution
Adversaries may exploit software vulnerabilities in client applications to execute code.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-5849Same product: Debian Debian Linux
CVE-2023-2136Same product: Debian Debian Linux
CVE-2023-2723Same product: Debian Debian Linux
CVE-2023-5187Same product: Debian Debian Linux
CVE-2023-4352Same product: Debian Debian Linux
CVE-2023-4572Same product: Debian Debian Linux
CVE-2021-37973Same product: Debian Debian Linux
CVE-2023-4357Same product: Debian Debian Linux
CVE-2023-4430Same product: Debian Debian Linux
CVE-2021-37975Same product: Debian Debian Linux

Affected Assets

debian
debian linux
11.0, 12.0
fedoraproject
fedora
38, 39
google
chrome
≤ 120.0.6099.62

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V1.2.1
  • V1.2.2
  • V1.2.3
  • V1.2.5

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-06 mostly match
prevents

Secure SDLC practices directly require correct output encoding to match downstream context, but eliminating only this flaw covers a narrow slice of the broader control.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.28 Secure coding mostly match
degrades

Secure coding directly addresses proper output encoding for context, covering most of the weakness and the control's intent.

A.8.29 Security testing in development and acceptance mostly match
finds

Security testing can detect encoding mismatches, but testing alone does not prevent the weakness at source.

A.8.25 Secure development life cycle partial match
prevents

Secure development life cycle requires encoding-aware output handling, but does not mandate context-specific encoding checks.

A.8.26 Application security requirements partial match
prevents

Application security requirements can specify correct output encoding, yet the control is broader than this single weakness.

References