CVE-2024-0727 — Issue summary: Processing a maliciously formatted PKCS12 file may lead OpenSSL t

Issue summary: Processing a maliciously formatted PKCS12 file may lead OpenSSL to crash leading to a potential Denial of Service attack

01What is this vulnerability?

Issue summary: Processing a maliciously formatted PKCS12 file may lead OpenSSL to crash leading to a potential Denial of Service attack

02Affected products

No structured affected-product list available — see references below for vendor advisories.

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: 2024-01-26T09:15:07.637
• Last modified: 2026-10-15T01:17:18.263

09References

• github.com — https://github.com/openssl/openssl/commit/09df4395b5071217b76dc7d3d2e630eb8c5a79…
• github.com — https://github.com/openssl/openssl/commit/775acfdbd0c6af9ac855f34969cdab0c0c9084…
• github.com — https://github.com/openssl/openssl/commit/d135eeab8a5dbf72b3da5240bab9ddb7678dbd…
• github.openssl.org — https://github.openssl.org/openssl/extended-releases/commit/03b3941d60c4bce58fab…
• github.openssl.org — https://github.openssl.org/openssl/extended-releases/commit/aebaa5883e31122b404e…
• www.openssl.org — https://www.openssl.org/news/secadv/20240125.txt
• www.openwall.com — http://www.openwall.com/lists/oss-security/2024/03/11/1
• github.com — https://github.com/openssl/openssl/commit/09df4395b5071217b76dc7d3d2e630eb8c5a79…
• github.com — https://github.com/openssl/openssl/commit/775acfdbd0c6af9ac855f34969cdab0c0c9084…
• github.com — https://github.com/openssl/openssl/commit/d135eeab8a5dbf72b3da5240bab9ddb7678dbd…