CVE-2017-1000121: webkitgtk Integer Overflow or Wraparound

Vulnerability summary

CVE-2017-1000121 is a critical (CVSS 9.8) Integer Overflow or Wraparound vulnerability in webkitgtk. EPSS estimates a 1.20% chance of exploitation in the next 30 days, higher than 67.7% of scored vulnerabilities.

Timeline

1. 01-11-2017
   PublishedVulnerability first disclosed.
2. 14-11-2024
   Last modifiedVulnerability information updated.

Description

The UNIX IPC layer in WebKit, including WebKitGTK+ prior to 2.16.3, does not properly validate message size metadata, allowing a compromised secondary process to trigger an integer overflow and subsequent buffer overflow in the UI process. This vulnerability does not affect Apple products.

• 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.