CVE-2016-5766: debian debian_linux Integer Overflow or Wraparound

Vulnerability summary

CVE-2016-5766 is a high (CVSS 8.8) Integer Overflow or Wraparound vulnerability in debian debian_linux. EPSS estimates a 7.50% chance of exploitation in the next 30 days, higher than 94.4% of scored vulnerabilities. 2 public exploits are recorded.

Timeline

1. 07-08-2016
   PublishedVulnerability first disclosed.
2. 06-08-2024
   Last modifiedVulnerability information updated.

Description

Integer overflow in the _gd2GetHeader function in gd_gd2.c in the GD Graphics Library (aka libgd) before 2.2.3, as used in PHP before 5.5.37, 5.6.x before 5.6.23, and 7.x before 7.0.8, allows remote attackers to cause a denial of service (heap-based buffer overflow and application crash) or possibly have unspecified other impact via crafted chunk dimensions in an image.

• 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.