CVE-2017-5953: vim Integer Overflow or Wraparound

Vulnerability summary

CVE-2017-5953 is a critical (CVSS 9.8) Integer Overflow or Wraparound vulnerability in vim. EPSS estimates a 2.83% chance of exploitation in the next 30 days, higher than 86.4% of scored vulnerabilities.

Timeline

1. 10-02-2017
   PublishedVulnerability first disclosed.
2. 05-08-2024
   Last modifiedVulnerability information updated.

Description

vim before patch 8.0.0322 does not properly validate values for tree length when handling a spell file, which may result in an integer overflow at a memory allocation site and a resultant buffer overflow.

• 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.