CVE-2015-8931: canonical ubuntu_linux Integer Overflow or Wraparound

Vulnerability summary

CVE-2015-8931 is a high (CVSS 7.8) Integer Overflow or Wraparound vulnerability in canonical ubuntu_linux. EPSS estimates a 2.12% chance of exploitation in the next 30 days, higher than 81.6% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 20-09-2016
   PublishedVulnerability first disclosed.
2. 06-08-2024
   Last modifiedVulnerability information updated.

Description

Multiple integer overflows in the (1) get_time_t_max and (2) get_time_t_min functions in archive_read_support_format_mtree.c in libarchive before 3.2.0 allow remote attackers to have unspecified impact via a crafted mtree file, which triggers undefined behavior.

• 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.