CVE-2018-12293: canonical ubuntu_linux Integer Overflow or Wraparound

Vulnerability summary

CVE-2018-12293 is a high (CVSS 8.8) Integer Overflow or Wraparound vulnerability in canonical ubuntu_linux. EPSS estimates a 10.39% chance of exploitation in the next 30 days, higher than 95.6% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 19-06-2018
   PublishedVulnerability first disclosed.
2. 05-08-2024
   Last modifiedVulnerability information updated.

Description

The getImageData function in the ImageBufferCairo class in WebCore/platform/graphics/cairo/ImageBufferCairo.cpp in WebKit, as used in WebKitGTK+ prior to version 2.20.3 and WPE WebKit prior to version 2.20.1, is vulnerable to a heap-based buffer overflow triggered by an integer overflow, which could be abused by crafted HTML content.

• 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.
• CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.