CVE-2016-5261: mozilla firefox Integer Overflow or Wraparound

Vulnerability summary

CVE-2016-5261 is a high (CVSS 8.8) Integer Overflow or Wraparound vulnerability in mozilla firefox. EPSS estimates a 4.18% chance of exploitation in the next 30 days, higher than 90.8% of scored vulnerabilities.

Timeline

1. 05-08-2016
   PublishedVulnerability first disclosed.
2. 06-08-2024
   Last modifiedVulnerability information updated.

Description

Integer overflow in the WebSocketChannel class in the WebSockets subsystem in Mozilla Firefox before 48.0 and Firefox ESR < 45.4 allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via crafted packets that trigger incorrect buffer-resize operations during buffering.

• 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.