CVE-2022-41318: squid-cache squid Integer Overflow or Wraparound

Vulnerability summary

CVE-2022-41318 is a high (CVSS 8.6) Integer Overflow or Wraparound vulnerability in squid-cache squid. EPSS estimates a 2.97% chance of exploitation in the next 30 days, higher than 87% of scored vulnerabilities.

Timeline

1. 25-12-2022
   PublishedVulnerability first disclosed.
2. 14-04-2025
   Last modifiedVulnerability information updated.

Description

A buffer over-read was discovered in libntlmauth in Squid 2.5 through 5.6. Due to incorrect integer-overflow protection, the SSPI and SMB authentication helpers are vulnerable to reading unintended memory locations. In some configurations, cleartext credentials from these locations are sent to a client. This is fixed in 5.7.

• 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.