CVE-2023-0216: openssl-src subject to Invalid pointer dereference in `d2i_PKCS7` functions

February 8, 2023 (updated February 21, 2023)

An invalid pointer dereference on read can be triggered when an application tries to load malformed PKCS7 data with the d2i_PKCS7(), d2i_PKCS7_bio() or d2i_PKCS7_fp() functions.

The result of the dereference is an application crash which could lead to a denial of service attack. The TLS implementation in OpenSSL does not call this function however third party applications might call these functions on untrusted data.

References

git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=934a04f0e775309cadbef0aa6b9692e1b12a76c6
github.com/advisories/GHSA-29xx-hcv2-c4cp
nvd.nist.gov/vuln/detail/CVE-2023-0216
rustsec.org/advisories/RUSTSEC-2023-0011.html
security.gentoo.org/glsa/202402-08
www.openssl.org/news/secadv/20230207.txt

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