Security 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 69th percentile
Risk Priority 53 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

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 OS Credential Dumping (T1003); ranked in the top 31% 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

T1003 OS Credential Dumping Credential Access
Adversaries may attempt to dump credentials to obtain account login and credential material, normally in the form of a hash or a clear text password.
attack.mitre.org →
T1003.003 NTDS Credential Access
Adversaries may attempt to access or create a copy of the Active Directory domain database in order to steal credential information, as well as obtain other information about domain members such as devices, users, and access rights.
attack.mitre.org →
T1003.006 DCSync Credential Access
Adversaries may attempt to access credentials and other sensitive information by abusing a Windows Domain Controller's application programming interface (API)(Citation: Microsoft DRSR Dec 2017) (Citation: Microsoft GetNCCChanges) (Citati…
attack.mitre.org →
T1003.008 /etc/passwd and /etc/shadow Credential Access
Adversaries may attempt to dump the contents of <code>/etc/passwd</code> and <code>/etc/shadow</code> to enable offline password cracking.
attack.mitre.org →
T1010 Application Window Discovery Discovery
Adversaries may attempt to get a listing of open application windows.
attack.mitre.org →
T1016 System Network Configuration Discovery Discovery
Adversaries may look for details about the network configuration and settings, such as IP and/or MAC addresses, of systems they access or through information discovery of remote systems.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2024-0808Same product: Debian Debian Linux
CVE-2023-6509Same product: Debian Debian Linux
CVE-2023-1818Same product: Debian Debian Linux
CVE-2021-21193Same product: Debian Debian Linux
CVE-2023-5856Same product: Debian Debian Linux
CVE-2023-5855Same product: Debian Debian Linux
CVE-2023-4358Same product: Debian Debian Linux
CVE-2023-6112Same product: Debian Debian Linux
CVE-2023-5472Same product: Debian Debian Linux
CVE-2023-2135Same 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 partial match
blocks

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.8.25 Secure development life cycle partial match
blocks

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
blocks

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

A.8.28 Secure coding partial match
prevents

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 partial match
finds

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

A.8.8 Management of technical vulnerabilities partial match
removes
A.8.9 Configuration management partial match
removes

References