CVE-2019-20791 — OpenThread before 2019-12-13 has a stack-based buffer overflow in MeshCoP::Commi

OpenThread before 2019-12-13 has a stack-based buffer overflow in MeshCoP::Commissioner::GeneratePskc.

01What is this vulnerability?

OpenThread before 2019-12-13 has a stack-based buffer overflow in MeshCoP::Commissioner::GeneratePskc.

02Affected products

Vendor	Product	Versions
n	a / n/a	n/a

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: 2020-04-28T17:35:52.000Z
• Last modified: 2024-08-05T02:53:09.207Z

09References

• bugs.chromium.org — https://bugs.chromium.org/p/oss-fuzz/issues/detail?id=19386
• github.com — https://github.com/openthread/openthread/commit/b8c3161281f8e15873f8decabd8eac46…
• github.com — https://github.com/openthread/openthread/commit/c3a3a0c424322009fec3ab735fb20ce8…