CVE-2021-23841 (GCVE-0-2021-23841)
Vulnerability from cvelistv5
Published
2021-02-16 16:55
Modified
2024-09-16 22:39
Severity ?
CWE
  • NULL pointer dereference
Summary
The OpenSSL public API function X509_issuer_and_serial_hash() attempts to create a unique hash value based on the issuer and serial number data contained within an X509 certificate. However it fails to correctly handle any errors that may occur while parsing the issuer field (which might occur if the issuer field is maliciously constructed). This may subsequently result in a NULL pointer deref and a crash leading to a potential denial of service attack. The function X509_issuer_and_serial_hash() is never directly called by OpenSSL itself so applications are only vulnerable if they use this function directly and they use it on certificates that may have been obtained from untrusted sources. OpenSSL versions 1.1.1i and below are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1j. OpenSSL versions 1.0.2x and below are affected by this issue. However OpenSSL 1.0.2 is out of support and no longer receiving public updates. Premium support customers of OpenSSL 1.0.2 should upgrade to 1.0.2y. Other users should upgrade to 1.1.1j. Fixed in OpenSSL 1.1.1j (Affected 1.1.1-1.1.1i). Fixed in OpenSSL 1.0.2y (Affected 1.0.2-1.0.2x).
References
openssl-security@openssl.orghttp://seclists.org/fulldisclosure/2021/May/67Mailing List, Third Party Advisory
openssl-security@openssl.orghttp://seclists.org/fulldisclosure/2021/May/68Mailing List, Third Party Advisory
openssl-security@openssl.orghttp://seclists.org/fulldisclosure/2021/May/70Mailing List, Third Party Advisory
openssl-security@openssl.orghttps://cert-portal.siemens.com/productcert/pdf/ssa-637483.pdfPatch, Third Party Advisory
openssl-security@openssl.orghttps://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=122a19ab48091c657f7cb1fb3af9fc07bd557bbf
openssl-security@openssl.orghttps://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=8252ee4d90f3f2004d3d0aeeed003ad49c9a7807
openssl-security@openssl.orghttps://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44846Third Party Advisory
openssl-security@openssl.orghttps://security.gentoo.org/glsa/202103-03Third Party Advisory
openssl-security@openssl.orghttps://security.netapp.com/advisory/ntap-20210219-0009/Third Party Advisory
openssl-security@openssl.orghttps://security.netapp.com/advisory/ntap-20210513-0002/Third Party Advisory
openssl-security@openssl.orghttps://security.netapp.com/advisory/ntap-20240621-0006/
openssl-security@openssl.orghttps://support.apple.com/kb/HT212528Third Party Advisory
openssl-security@openssl.orghttps://support.apple.com/kb/HT212529Third Party Advisory
openssl-security@openssl.orghttps://support.apple.com/kb/HT212534Third Party Advisory
openssl-security@openssl.orghttps://www.debian.org/security/2021/dsa-4855Third Party Advisory
openssl-security@openssl.orghttps://www.openssl.org/news/secadv/20210216.txtVendor Advisory
openssl-security@openssl.orghttps://www.oracle.com//security-alerts/cpujul2021.htmlPatch, Third Party Advisory
openssl-security@openssl.orghttps://www.oracle.com/security-alerts/cpuApr2021.htmlPatch, Third Party Advisory
openssl-security@openssl.orghttps://www.oracle.com/security-alerts/cpuapr2022.htmlPatch, Third Party Advisory
openssl-security@openssl.orghttps://www.oracle.com/security-alerts/cpuoct2021.htmlPatch, Third Party Advisory
openssl-security@openssl.orghttps://www.tenable.com/security/tns-2021-03Third Party Advisory
openssl-security@openssl.orghttps://www.tenable.com/security/tns-2021-09Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://seclists.org/fulldisclosure/2021/May/67Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://seclists.org/fulldisclosure/2021/May/68Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108http://seclists.org/fulldisclosure/2021/May/70Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://cert-portal.siemens.com/productcert/pdf/ssa-637483.pdfPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=122a19ab48091c657f7cb1fb3af9fc07bd557bbf
af854a3a-2127-422b-91ae-364da2661108https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=8252ee4d90f3f2004d3d0aeeed003ad49c9a7807
af854a3a-2127-422b-91ae-364da2661108https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44846Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202103-03Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20210219-0009/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20210513-0002/Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.netapp.com/advisory/ntap-20240621-0006/
af854a3a-2127-422b-91ae-364da2661108https://support.apple.com/kb/HT212528Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://support.apple.com/kb/HT212529Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://support.apple.com/kb/HT212534Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.debian.org/security/2021/dsa-4855Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.openssl.org/news/secadv/20210216.txtVendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.oracle.com//security-alerts/cpujul2021.htmlPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.oracle.com/security-alerts/cpuApr2021.htmlPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.oracle.com/security-alerts/cpuapr2022.htmlPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.oracle.com/security-alerts/cpuoct2021.htmlPatch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.tenable.com/security/tns-2021-03Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://www.tenable.com/security/tns-2021-09Third Party Advisory
Impacted products
Vendor Product Version
OpenSSL OpenSSL Version: Fixed in OpenSSL 1.1.1j (Affected 1.1.1-1.1.1i)
Version: Fixed in OpenSSL 1.0.2y (Affected 1.0.2-1.0.2x)
 Create a notification for this product.
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OpenSSL versions 1.1.1i and below are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1j. OpenSSL versions 1.0.2x and below are affected by this issue. However OpenSSL 1.0.2 is out of support and no longer receiving public updates. Premium support customers of OpenSSL 1.0.2 should upgrade to 1.0.2y. Other users should upgrade to 1.1.1j. Fixed in OpenSSL 1.1.1j (Affected 1.1.1-1.1.1i). Fixed in OpenSSL 1.0.2y (Affected 1.0.2-1.0.2x).\"},{\"lang\":\"es\",\"value\":\"La funci\u00f3n de la API p\u00fablica de OpenSSL X509_issuer_and_serial_hash() intenta crear un valor hash \u00fanico basado en los datos del emisor y del n\u00famero de serie contenidos en un certificado X509. Sin embargo, no gestiona correctamente los errores que puedan producirse al analizar el campo del emisor (lo que podr\u00eda ocurrir si el campo del emisor se construye de forma maliciosa). Esto puede dar lugar a un desv\u00edo de puntero NULL y a un fallo que conduzca a un posible ataque de denegaci\u00f3n de servicio. La funci\u00f3n X509_issuer_and_serial_hash() nunca es llamada directamente por OpenSSL, por lo que las aplicaciones s\u00f3lo son vulnerables si utilizan esta funci\u00f3n directamente y lo hacen con certificados que pueden haber sido obtenidos de fuentes no fiables. Las versiones de OpenSSL 1.1.1i y posteriores est\u00e1n afectadas por este problema. Los usuarios de estas versiones deber\u00edan actualizar a OpenSSL 1.1.1j. Las versiones de OpenSSL 1.0.2x e inferiores se ven afectadas por este problema. Sin embargo, OpenSSL 1.0.2 est\u00e1 fuera de soporte y ya no recibe actualizaciones p\u00fablicas. Los clientes con soporte Premium de OpenSSL 1.0.2 deben actualizar a la versi\u00f3n 1.0.2y. Los dem\u00e1s usuarios deben actualizar a la versi\u00f3n 1.1.1j. Corregido en OpenSSL 1.1.1j (Afectado 1.1.1-1.1.1i). Corregido en OpenSSL 1.0.2y (Afectado 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1.0.2-1.0.2x)\"}]}], \"datePublic\": \"2021-02-16T00:00:00\", \"references\": [{\"url\": \"https://www.openssl.org/news/secadv/20210216.txt\"}, {\"url\": \"https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=122a19ab48091c657f7cb1fb3af9fc07bd557bbf\"}, {\"url\": \"https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=8252ee4d90f3f2004d3d0aeeed003ad49c9a7807\"}, {\"url\": \"https://www.debian.org/security/2021/dsa-4855\", \"name\": \"DSA-4855\", \"tags\": [\"vendor-advisory\"]}, {\"url\": \"https://security.gentoo.org/glsa/202103-03\", \"name\": \"GLSA-202103-03\", \"tags\": [\"vendor-advisory\"]}, {\"url\": \"http://seclists.org/fulldisclosure/2021/May/70\", \"name\": \"20210526 APPLE-SA-2021-05-25-2 macOS Big Sur 11.4\", \"tags\": [\"mailing-list\"]}, {\"url\": \"http://seclists.org/fulldisclosure/2021/May/68\", \"name\": \"20210526 APPLE-SA-2021-05-25-5 Safari 14.1.1\", \"tags\": [\"mailing-list\"]}, {\"url\": 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\"https://cert-portal.siemens.com/productcert/pdf/ssa-637483.pdf\"}, {\"url\": \"https://security.netapp.com/advisory/ntap-20240621-0006/\"}], \"descriptions\": [{\"lang\": \"en\", \"value\": \"The OpenSSL public API function X509_issuer_and_serial_hash() attempts to create a unique hash value based on the issuer and serial number data contained within an X509 certificate. 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      "dataVersion": "5.1"
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}