CVE-2023-6345: Google Skia Integer Overflow Vulnerability

Vulnerability summary

CVE-2023-6345 is a critical (CVSS 9.6) Integer Overflow or Wraparound vulnerability in Google Chromium Skia. It is known to be exploited: CISA lists it, first on 30-11-2023. EPSS estimates a 16.47% chance of exploitation in the next 30 days, higher than 96.9% of scored vulnerabilities.

Timeline

1. 29-11-2023
   PublishedVulnerability first disclosed.
2. 30-11-2023
   Added to CISA KEVGoogle Skia Integer Overflow Vulnerability
3. 21-12-2023
   CISA remediation dueApply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
4. 21-10-2025
   Last modifiedVulnerability information updated.

Description

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-190Integer Overflow or WraparoundThe 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.