Security Resilience

CVE-2023-6345

Memory Safety in Fedoraproject Fedora 37 … 39

CISA KEVActive ExploitationEUVD ExploitedMemory Safety
Published
29 November 2023
Modified
24 October 2025
KEV Added
30 November 2023
CVSS Score v3.1 9.6
Click a component to see what it means
Raw vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
EPSS Score 0.16 97th percentile
Risk Priority 94 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-2023-6345 is a critical-severity Integer Overflow or Wraparound (CWE-190) vulnerability in Fedoraproject Fedora. Its CVSS base score is 9.6 (Critical).

Operationally, exploitation aligns with the MITRE ATT&CK technique LSA Secrets (T1003.004); ranked in the top 3% of CVEs by exploit likelihood; CISA has added it to the Known Exploited Vulnerabilities catalog.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

CVE-2023-6345 is an integer overflow vulnerability (CWE-190) in the Skia graphics library used by Google Chrome. It affected all versions prior to 119.0.6045.199 and carried a CVSS 3.1 score of 9.6.

A remote attacker who had already compromised the Chrome renderer process could supply a malicious file to trigger the flaw and potentially escape the sandbox, achieving elevated access on the host system.

The primary mitigation is the Stable Channel update published on 28 November 2023 that advances Chrome to 119.0.6045.199 or later; downstream Fedora advisories likewise distribute the patched builds.

The associated EPSS score rose materially from a low baseline to a peak of 0.2024 on 5 December 2024 before receding to its current value of 0.0129, indicating a period of increased exploitation interest after public disclosure.

EU & UK References

Vulnerability Data

Integer overflow in Skia in Google Chrome prior to 119.0.6045.199 allowed a remote attacker who had compromised the renderer process to potentially perform a sandbox escape via a malicious file. (Chromium security severity: High)

CWE(s)
CWE-190
KEV Date Added
30 November 2023

Related Threats

MITRE ATT&CK Enterprise Techniques

T1003.004 LSA Secrets Credential Access
Adversaries with SYSTEM access to a host may attempt to access Local Security Authority (LSA) secrets, which can contain a variety of different credential materials, such as credentials for service accounts.
attack.mitre.org →
T1003.005 Cached Domain Credentials Credential Access
Adversaries may attempt to access cached domain credentials used to allow authentication to occur in the event a domain controller is unavailable.
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 →
T1006 Direct Volume Access Stealth
Adversaries may directly access a volume to bypass file access controls and file system monitoring.
attack.mitre.org →
T1008 Fallback Channels Command And Control
Adversaries may use fallback or alternate communication channels if the primary channel is compromised or inaccessible in order to maintain reliable command and control and to avoid data transfer thresholds.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2023-2136Same product: Debian Debian Linuxboth on KEV
CVE-2023-4762Same product: Debian Debian Linuxboth on KEV
CVE-2023-5849Same product: Debian Debian Linux
CVE-2018-6065Same product: Debian Debian Linuxboth on KEV
CVE-2021-21148Same product: Debian Debian Linuxboth on KEV
CVE-2023-7024Same product: Debian Debian Linuxboth on KEV
CVE-2021-21224Same product: Debian Debian Linuxboth on KEV
CVE-2021-21193Same product: Debian Debian Linuxboth on KEV
CVE-2021-37975Same product: Debian Debian Linuxboth on KEV
CVE-2021-37973Same product: Debian Debian Linuxboth on KEV

Affected Assets

google
chrome
≤ 119.0.6045.199
debian
debian linux
11.0, 12.0
fedoraproject
fedora
37, 38, 39
microsoft
edge chromium
≤ 119.0.2151.97

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)
  • V5.2.6

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 use of safe arithmetic, bounds checks, and testing that prevent integer overflows.

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.5.14 Information transfer partial match
removes
A.5.15 Access control partial match
removes
A.5.16 Identity management partial match
removes
A.5.17 Authentication information partial match
removes
A.5.18 Access rights partial match
removes
A.8.10 Information deletion partial match
removes

References