CVE-2021-20303: debian debian_linux Integer Overflow or Wraparound

Vulnerability summary

CVE-2021-20303 is a medium (CVSS 6.1) Integer Overflow or Wraparound vulnerability in debian debian_linux. EPSS estimates a 0.82% chance of exploitation in the next 30 days, higher than 56.8% of scored vulnerabilities.

Timeline

1. 04-03-2022
   PublishedVulnerability first disclosed.
2. 03-08-2024
   Last modifiedVulnerability information updated.

Description

A flaw found in function dataWindowForTile() of IlmImf/ImfTiledMisc.cpp. An attacker who is able to submit a crafted file to be processed by OpenEXR could trigger an integer overflow, leading to an out-of-bounds write on the heap. The greatest impact of this flaw is to application availability, with some potential impact to data integrity as well.

• 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.