FKIE_CVE-2023-0286

Vulnerability from fkie_nvd - Published: 2023-02-08 20:15 - Updated: 2025-11-04 20:16
Severity ?
7.4 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H
7.4 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H
Summary
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
openssl-security@openssl.orghttps://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-3.6.2-relnotes.txtThird Party Advisory
openssl-security@openssl.orghttps://ftp.openbsd.org/pub/OpenBSD/patches/7.2/common/018_x509.patch.sigThird Party Advisory
openssl-security@openssl.orghttps://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=2c6c9d439b484e1ba9830d8454a34fa4f80fdfe9Patch, Vendor Advisory
openssl-security@openssl.orghttps://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=2f7530077e0ef79d98718138716bc51ca0cad658Patch, Vendor Advisory
openssl-security@openssl.orghttps://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=fd2af07dc083a350c959147097003a14a5e8ac4dPatch, Vendor Advisory
openssl-security@openssl.orghttps://security.gentoo.org/glsa/202402-08
openssl-security@openssl.orghttps://www.openssl.org/news/secadv/20230207.txtVendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-3.6.2-relnotes.txtThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://ftp.openbsd.org/pub/OpenBSD/patches/7.2/common/018_x509.patch.sigThird Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=2c6c9d439b484e1ba9830d8454a34fa4f80fdfe9Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=2f7530077e0ef79d98718138716bc51ca0cad658Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=fd2af07dc083a350c959147097003a14a5e8ac4dPatch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2023-0003
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202402-08
af854a3a-2127-422b-91ae-364da2661108https://www.openssl.org/news/secadv/20230207.txtVendor Advisory
Impacted products
Vendor Product Version
openssl openssl *
openssl openssl *
openssl openssl *
stormshield stormshield_management_center *
stormshield stormshield_network_security *
stormshield stormshield_network_security *
stormshield stormshield_network_security *
stormshield stormshield_network_security *
stormshield stormshield_network_security *
To clipboard 

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      "value": "There is a type confusion vulnerability relating to X.400 address processing\ninside an X.509 GeneralName. X.400 addresses were parsed as an ASN1_STRING but\nthe public structure definition for GENERAL_NAME incorrectly specified the type\nof the x400Address field as ASN1_TYPE. This field is subsequently interpreted by\nthe OpenSSL function GENERAL_NAME_cmp as an ASN1_TYPE rather than an\nASN1_STRING.\n\nWhen CRL checking is enabled (i.e. the application sets the\nX509_V_FLAG_CRL_CHECK flag), this vulnerability may allow an attacker to pass\narbitrary pointers to a memcmp call, enabling them to read memory contents or\nenact a denial of service. In most cases, the attack requires the attacker to\nprovide both the certificate chain and CRL, neither of which need to have a\nvalid signature. If the attacker only controls one of these inputs, the other\ninput must already contain an X.400 address as a CRL distribution point, which\nis uncommon. As such, this vulnerability is most likely to only affect\napplications which have implemented their own functionality for retrieving CRLs\nover a network."
    }
  ],
  "id": "CVE-2023-0286",
  "lastModified": "2025-11-04T20:16:16.350",
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          "baseScore": 7.4,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "NONE",
          "privilegesRequired": "NONE",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
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}


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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



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