CVE-2021-31807: fedoraproject fedora Integer Overflow or Wraparound

Vulnerability summary

CVE-2021-31807 is a medium (CVSS 6.5) Integer Overflow or Wraparound vulnerability in fedoraproject fedora. EPSS estimates a 15.56% chance of exploitation in the next 30 days, higher than 96.8% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 08-06-2021
   PublishedVulnerability first disclosed.
2. 03-08-2024
   Last modifiedVulnerability information updated.

Description

An issue was discovered in Squid before 4.15 and 5.x before 5.0.6. An integer overflow problem allows a remote server to achieve Denial of Service when delivering responses to HTTP Range requests. The issue trigger is a header that can be expected to exist in HTTP traffic without any malicious intent.

• 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.