Vulnerability Description
A NULL pointer can be dereferenced when signatures are being verified on PKCS7 signed or signedAndEnveloped data. In case the hash algorithm used for the signature is known to the OpenSSL library but the implementation of the hash algorithm is not available the digest initialization will fail. There is a missing check for the return value from the initialization function which later leads to invalid usage of the digest API most likely leading to a crash. The unavailability of an algorithm can be caused by using FIPS enabled configuration of providers or more commonly by not loading the legacy provider. PKCS7 data is processed by the SMIME library calls and also by the time stamp (TS) library calls. The TLS implementation in OpenSSL does not call these functions however third party applications would be affected if they call these functions to verify signatures on untrusted data.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Openssl | Openssl | >= 3.0.0, <= 3.0.7 |
| Stormshield | Stormshield Management Center | < 3.3.3 |
Related Weaknesses (CWE)
References
- https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=d3b6dfd70db844c4499PatchVendor Advisory
- https://security.gentoo.org/glsa/202402-08
- https://www.openssl.org/news/secadv/20230207.txtVendor Advisory
- https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=d3b6dfd70db844c4499PatchVendor Advisory
- https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2023-0003
- https://security.gentoo.org/glsa/202402-08
- https://www.openssl.org/news/secadv/20230207.txtVendor Advisory
FAQ
What is CVE-2023-0401?
CVE-2023-0401 is a vulnerability with a CVSS score of 7.5 (HIGH). A NULL pointer can be dereferenced when signatures are being verified on PKCS7 signed or signedAndEnveloped data. In case the hash algorithm used for the signature is known to the OpenSSL library but ...
How severe is CVE-2023-0401?
CVE-2023-0401 has been rated HIGH with a CVSS base score of 7.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-0401?
Check the references section above for vendor advisories and patch information. Affected products include: Openssl Openssl, Stormshield Stormshield Management Center.