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.
References
Link Providers
https://cert-portal.siemens.com/productcert/html/ssa-028723.html cve-icon
https://cert-portal.siemens.com/productcert/html/ssa-203374.html cve-icon
https://cert-portal.siemens.com/productcert/html/ssa-264815.html cve-icon
https://cert-portal.siemens.com/productcert/html/ssa-337522.html cve-icon
https://cert-portal.siemens.com/productcert/html/ssa-398330.html cve-icon
https://cert-portal.siemens.com/productcert/html/ssa-455250.html cve-icon
https://cert-portal.siemens.com/productcert/html/ssa-556635.html cve-icon
https://cert-portal.siemens.com/productcert/html/ssa-561322.html cve-icon
https://cert-portal.siemens.com/productcert/html/ssa-625862.html cve-icon
https://cert-portal.siemens.com/productcert/html/ssa-769027.html cve-icon
https://cert-portal.siemens.com/productcert/html/ssa-794697.html cve-icon
https://cert-portal.siemens.com/productcert/html/ssa-879734.html cve-icon
https://cert-portal.siemens.com/productcert/html/ssa-943925.html cve-icon
https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-3.6.2-relnotes.txt cve-icon cve-icon
https://ftp.openbsd.org/pub/OpenBSD/patches/7.2/common/018_x509.patch.sig cve-icon cve-icon
https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=2c6c9d439b484e1ba9830d8454a34fa4f80fdfe9 cve-icon cve-icon
https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=2f7530077e0ef79d98718138716bc51ca0cad658 cve-icon cve-icon
https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=fd2af07dc083a350c959147097003a14a5e8ac4d cve-icon cve-icon
https://nvd.nist.gov/vuln/detail/CVE-2023-0286 cve-icon
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2023-0003 cve-icon
https://security.gentoo.org/glsa/202402-08 cve-icon cve-icon
https://www.cve.org/CVERecord?id=CVE-2023-0286 cve-icon
https://www.openssl.org/news/secadv/20230207.txt cve-icon cve-icon cve-icon
History

Wed, 14 Oct 2026 20:30:00 +0000


Tue, 04 Nov 2025 20:30:00 +0000

Type Values Removed Values Added
References

Wed, 16 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.89545}

epss

{'score': 0.8964}


Fri, 11 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.8964}

epss

{'score': 0.89545}


Fri, 16 May 2025 02:30:00 +0000

Type Values Removed Values Added
CPEs cpe:/a:redhat:rhel_eus:9.4

Thu, 20 Mar 2025 21:15:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 13 Feb 2025 16:45:00 +0000

Type Values Removed Values Added
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. 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.

Thu, 12 Sep 2024 02:15:00 +0000

Type Values Removed Values Added
First Time appeared Redhat logging
CPEs cpe:/a:redhat:logging:5.9::el9
Vendors & Products Redhat logging

Thu, 08 Aug 2024 19:00:00 +0000

Type Values Removed Values Added
CPEs cpe:/o:redhat:rhel_aus:7.7

cve-icon MITRE

Status: PUBLISHED

Assigner: openssl

Published: 2023-02-08T19:01:50.514Z

Updated: 2026-10-14T19:23:44.227Z

Reserved: 2023-01-13T10:40:41.259Z

Link: CVE-2023-0286

cve-icon Vulnrichment

Updated: 2025-11-04T19:14:36.256Z

cve-icon NVD

Status : Modified

Published: 2023-02-08T20:15:24.267

Modified: 2026-10-14T20:17:22.450

Link: CVE-2023-0286

cve-icon Redhat

Severity : Important

Publid Date: 2023-02-07T00:00:00Z

Links: CVE-2023-0286 - Bugzilla