CVE-2020-13520 — An out of bounds memory corruption vulnerability exists in the way Pixar OpenUSD

An out of bounds memory corruption vulnerability exists in the way Pixar OpenUSD 20.05 reconstructs paths from binary USD files. A specially crafted malformed file can trigger an out of bounds memory modification which can result in remote code execution. To trigger this vulnerab

01What is this vulnerability?

An out of bounds memory corruption vulnerability exists in the way Pixar OpenUSD 20.05 reconstructs paths from binary USD files. A specially crafted malformed file can trigger an out of bounds memory modification which can result in remote code execution. To trigger this vulnerability, victim needs to access an attacker-provided malformed file.

02Affected products

Vendor	Product	Versions
n	a / Pixar	Pixar OpenUSD 20.05 (tested in Apple macOS Catalina 10.15.3)

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2020-12-11T03:25:01.000Z
• Last modified: 2024-08-04T12:18:18.351Z

09References

• talosintelligence.com — https://talosintelligence.com/vulnerability_reports/TALOS-2020-1120
• support.apple.com — https://support.apple.com/kb/HT212011