NULL pointer dereference in OpenSSL
CVE-2023-0216
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.018 (79.0th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 79th percentile — 79.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.018 · newest: 0.018 · change: 0.000
Affected products
- OpenSSL — versions 3.0.0
- Stormshield Management Center
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.openssl.org/news/secadv/20230207.txt (vendor-advisory, Vendor Advisory)
- git.openssl.org/gitweb/ (Patch, patch, Vendor Advisory)
- security.gentoo.org/glsa/202402-08
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2023-0216?
- CVE-2023-0216 is a high-severity vulnerability in OpenSSL, classified under NULL Pointer Dereference. CVSS score: 7.5/10. Published 2023-02-08.
- How severe is CVE-2023-0216?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2023-0216 known to be exploited?
- 8 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.