CVE-2020-13494: pixar openusd Heap-based Buffer Overflow

Vulnerability summary

CVE-2020-13494 is a medium (CVSS 5.5) Heap-based Buffer Overflow vulnerability in pixar openusd. EPSS estimates a 1.18% chance of exploitation in the next 30 days, higher than 67.3% of scored vulnerabilities. 1 public exploit is recorded.

Timeline

1. 02-12-2020
   PublishedVulnerability first disclosed.
2. 04-08-2024
   Last modifiedVulnerability information updated.

Description

A heap overflow vulnerability exists in the Pixar OpenUSD 20.05 parsing of compressed string tokens in binary USD files. A specially crafted malformed file can trigger a heap overflow which can result in out of bounds memory access which could lead to information disclosure. This vulnerability could be used to bypass mitigations and aid further exploitation. To trigger this vulnerability, victim needs to access an attacker-provided malformed file.

• CWE-122Heap-based Buffer OverflowA heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().
• CWE-787Out-of-bounds WriteThe product writes data past the end, or before the beginning, of the intended buffer.