Vulnerability Description
There is a type confusion vulnerability relating to X.400 address processing inside an X.509 GeneralName. X.400 addresses were parsed as an ASN1_STRING but the public structure definition for GENERAL_NAME incorrectly specified the type of the x400Address field as ASN1_TYPE. This field is subsequently interpreted by the OpenSSL function GENERAL_NAME_cmp as an ASN1_TYPE rather than an ASN1_STRING. When CRL checking is enabled (i.e. the application sets the X509_V_FLAG_CRL_CHECK flag), this vulnerability may allow an attacker to pass arbitrary pointers to a memcmp call, enabling them to read memory contents or enact a denial of service. In most cases, the attack requires the attacker to provide both the certificate chain and CRL, neither of which need to have a valid signature. If the attacker only controls one of these inputs, the other input must already contain an X.400 address as a CRL distribution point, which is uncommon. As such, this vulnerability is most likely to only affect applications which have implemented their own functionality for retrieving CRLs over a network.
CVSS Score
HIGH
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Openssl | Openssl | >= 1.0.2, < 1.0.2zg |
| Stormshield | Stormshield Management Center | < 3.3.3 |
| Stormshield | Stormshield Network Security | >= 2.7.0, < 2.7.11 |
Related Weaknesses (CWE)
References
- https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-3.6.2-relnotes.txtThird Party Advisory
- https://ftp.openbsd.org/pub/OpenBSD/patches/7.2/common/018_x509.patch.sigThird Party Advisory
- https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=2c6c9d439b484e1ba98PatchVendor Advisory
- https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=2f7530077e0ef79d987PatchVendor Advisory
- https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=fd2af07dc083a350c95PatchVendor Advisory
- https://security.gentoo.org/glsa/202402-08
- https://www.openssl.org/news/secadv/20230207.txtVendor Advisory
- https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-3.6.2-relnotes.txtThird Party Advisory
- https://ftp.openbsd.org/pub/OpenBSD/patches/7.2/common/018_x509.patch.sigThird Party Advisory
- https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=2c6c9d439b484e1ba98PatchVendor Advisory
- https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=2f7530077e0ef79d987PatchVendor Advisory
- https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=fd2af07dc083a350c95PatchVendor 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-2023-0286?
CVE-2023-0286 is a vulnerability with a CVSS score of 7.4 (HIGH). There is a type confusion vulnerability relating to X.400 address processing inside an X.509 GeneralName. X.400 addresses were parsed as an ASN1_STRING but the public structure definition for GENERAL_...
How severe is CVE-2023-0286?
CVE-2023-0286 has been rated HIGH with a CVSS base score of 7.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2023-0286?
Check the references section above for vendor advisories and patch information. Affected products include: Openssl Openssl, Stormshield Stormshield Management Center, Stormshield Stormshield Network Security.