CVE-2023-0216 Invalid pointer dereference in d2i_PKCS7 functions

What is CVE-2023-0216?

CVE-2023-0216 is a high-severity vulnerability in Openssl Openssl, published on 8 Feb 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

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.

Weakness: CWE-476

Which versions are affected by CVE-2023-0216?

3 open source packages ship an affected version, including openssl-src. It affects 2 products.

Products include Openssl Openssl, Stormshield Stormshield Management Center.

How do I fix CVE-2023-0216?

Upgrade openssl-src to 300.0.12 or later.

Is CVE-2023-0216 being exploited?

There is no known exploitation of CVE-2023-0216 in the wild and no public exploit code.

Other vulnerabilities in Openssl Openssl

• CVE-2009-3245 Null dereference in n/a Critical 10.0
• CVE-2006-3738 Memory corruption in n/a Critical 10.0
• CVE-2026-63073 Untrusted Sender DN Used as Format String in CMP Response Validation Critical 9.8
• CVE-2016-6309 Use after free in n/a Critical 9.8
• CVE-2016-0799 Integer overflow in n/a Critical 9.8

All Openssl Openssl vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as ALPINE-CVE-2023-0216, CLEANSTART-2026-UF28106, DEBIAN-CVE-2023-0216, GHSA-29xx-hcv2-c4cp, RUSTSEC-2023-0011, UBUNTU-CVE-2023-0216.