CVE-2023-0286 (GCVE-0-2023-0286)

Vulnerability from cvelistv5 – Published: 2023-02-08 19:01 – Updated: 2025-11-04 19:14
VLAI
Title
X.400 address type confusion in X.509 GeneralName
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.
Severity
7.4 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2025-03-06 15:57 UTC
CWE
  • type confusion vulnerability
  • CWE-843 - Access of Resource Using Incompatible Type ('Type Confusion')
Assigner
References
Impacted products
Vendor Product Version CPE status
OpenSSL OpenSSL Affected: 3.0.0 , < 3.0.8 (semver)
Affected: 1.1.1 , < 1.1.1t (custom)
Affected: 1.0.2 , < 1.0.2zg (custom)
guessed Create a notification for this product.
Date Public
2023-02-07 00:00
Credits
David Benjamin (Google) Hugo Landau
Show details on NVD website
To clipboard 

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      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://www.openssl.org/news/secadv/20230207.txt\", \"name\": \"OpenSSL Advisory\", \"tags\": [\"vendor-advisory\", \"x_transferred\"]}, {\"url\": \"https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=2f7530077e0ef79d98718138716bc51ca0cad658\", \"name\": \"3.0.8 git commit\", \"tags\": [\"patch\", \"x_transferred\"]}, {\"url\": \"https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=2c6c9d439b484e1ba9830d8454a34fa4f80fdfe9\", \"name\": \"1.1.1t git commit\", \"tags\": [\"patch\", \"x_transferred\"]}, {\"url\": \"https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=fd2af07dc083a350c959147097003a14a5e8ac4d\", \"name\": \"1.0.2zg patch (premium)\", \"tags\": [\"patch\", \"x_transferred\"]}, {\"url\": \"https://ftp.openbsd.org/pub/OpenBSD/patches/7.2/common/018_x509.patch.sig\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-3.6.2-relnotes.txt\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://security.gentoo.org/glsa/202402-08\", \"tags\": [\"x_transferred\"]}, {\"url\": \"https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2023-0003\"}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2025-11-04T19:14:36.256Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"cvssV3_1\": {\"scope\": \"UNCHANGED\", \"version\": \"3.1\", \"baseScore\": 7.4, \"attackVector\": \"NETWORK\", \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H\", \"integrityImpact\": \"NONE\", \"userInteraction\": \"NONE\", \"attackComplexity\": \"HIGH\", \"availabilityImpact\": \"HIGH\", \"privilegesRequired\": \"NONE\", \"confidentialityImpact\": \"HIGH\"}}, {\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2023-0286\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"none\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"partial\"}], \"version\": \"2.0.3\", \"timestamp\": \"2025-03-06T15:57:22.031399Z\"}}}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"cweId\": \"CWE-843\", \"description\": \"CWE-843 Access of Resource Using Incompatible Type (\u0027Type Confusion\u0027)\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-03-06T15:57:23.457Z\"}}], \"cna\": {\"title\": \"X.400 address type confusion in X.509 GeneralName\", \"source\": {\"discovery\": \"UNKNOWN\"}, \"credits\": [{\"lang\": \"en\", \"type\": \"reporter\", \"user\": \"00000000-0000-4000-9000-000000000000\", \"value\": \"David Benjamin (Google)\"}, {\"lang\": \"en\", \"type\": \"remediation developer\", \"user\": \"00000000-0000-4000-9000-000000000000\", \"value\": \"Hugo Landau\"}], \"metrics\": [{\"other\": {\"type\": \"https://www.openssl.org/policies/secpolicy.html\", \"content\": {\"text\": \"High\"}}, \"format\": \"other\"}], \"affected\": [{\"vendor\": \"OpenSSL\", \"product\": \"OpenSSL\", \"versions\": [{\"status\": \"affected\", \"version\": \"3.0.0\", \"lessThan\": \"3.0.8\", \"versionType\": \"semver\"}, {\"status\": \"affected\", \"version\": \"1.1.1\", \"lessThan\": \"1.1.1t\", \"versionType\": \"custom\"}, {\"status\": \"affected\", \"version\": \"1.0.2\", \"lessThan\": \"1.0.2zg\", \"versionType\": \"custom\"}], \"defaultStatus\": \"unaffected\"}], \"datePublic\": \"2023-02-07T00:00:00.000Z\", \"references\": [{\"url\": \"https://www.openssl.org/news/secadv/20230207.txt\", \"name\": \"OpenSSL Advisory\", \"tags\": [\"vendor-advisory\"]}, {\"url\": \"https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=2f7530077e0ef79d98718138716bc51ca0cad658\", \"name\": \"3.0.8 git commit\", \"tags\": [\"patch\"]}, {\"url\": \"https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=2c6c9d439b484e1ba9830d8454a34fa4f80fdfe9\", \"name\": \"1.1.1t git commit\", \"tags\": [\"patch\"]}, {\"url\": \"https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=fd2af07dc083a350c959147097003a14a5e8ac4d\", \"name\": \"1.0.2zg patch (premium)\", \"tags\": [\"patch\"]}, {\"url\": \"https://ftp.openbsd.org/pub/OpenBSD/patches/7.2/common/018_x509.patch.sig\"}, {\"url\": \"https://ftp.openbsd.org/pub/OpenBSD/LibreSSL/libressl-3.6.2-relnotes.txt\"}, {\"url\": \"https://security.gentoo.org/glsa/202402-08\"}], \"x_generator\": {\"engine\": \"Vulnogram 0.1.0-dev\"}, \"descriptions\": [{\"lang\": \"en\", \"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.\", \"supportingMedia\": [{\"type\": \"text/html\", \"value\": \"There is a type confusion vulnerability relating to X.400 address processing\u003cbr\u003einside an X.509 GeneralName. X.400 addresses were parsed as an ASN1_STRING but\u003cbr\u003ethe public structure definition for GENERAL_NAME incorrectly specified the type\u003cbr\u003eof the x400Address field as ASN1_TYPE. This field is subsequently interpreted by\u003cbr\u003ethe OpenSSL function GENERAL_NAME_cmp as an ASN1_TYPE rather than an\u003cbr\u003eASN1_STRING.\u003cbr\u003e\u003cbr\u003eWhen CRL checking is enabled (i.e. the application sets the\u003cbr\u003eX509_V_FLAG_CRL_CHECK flag), this vulnerability may allow an attacker to pass\u003cbr\u003earbitrary pointers to a memcmp call, enabling them to read memory contents or\u003cbr\u003eenact a denial of service. In most cases, the attack requires the attacker to\u003cbr\u003eprovide both the certificate chain and CRL, neither of which need to have a\u003cbr\u003evalid signature. If the attacker only controls one of these inputs, the other\u003cbr\u003einput must already contain an X.400 address as a CRL distribution point, which\u003cbr\u003eis uncommon. As such, this vulnerability is most likely to only affect\u003cbr\u003eapplications which have implemented their own functionality for retrieving CRLs\u003cbr\u003eover a network.\u003cbr\u003e\u003cbr\u003e\", \"base64\": false}]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"description\": \"type confusion vulnerability\"}]}], \"providerMetadata\": {\"orgId\": \"3a12439a-ef3a-4c79-92e6-6081a721f1e5\", \"shortName\": \"openssl\", \"dateUpdated\": \"2024-02-04T09:06:58.565Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2023-0286\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-11-04T19:14:36.256Z\", \"dateReserved\": \"2023-01-13T10:40:41.259Z\", \"assignerOrgId\": \"3a12439a-ef3a-4c79-92e6-6081a721f1e5\", \"datePublished\": \"2023-02-08T19:01:50.514Z\", \"assignerShortName\": \"openssl\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.2"
    }
  }
}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • 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.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • 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.


Detection rules are retrieved from Rulezet.