CVE-2021-3450 (GCVE-0-2021-3450)
Vulnerability from cvelistv5
Published
2021-03-25 14:25
Modified
2024-09-17 03:07
Severity ?
CWE
  • Invalid Certificate Verification
Summary
The X509_V_FLAG_X509_STRICT flag enables additional security checks of the certificates present in a certificate chain. It is not set by default. Starting from OpenSSL version 1.1.1h a check to disallow certificates in the chain that have explicitly encoded elliptic curve parameters was added as an additional strict check. An error in the implementation of this check meant that the result of a previous check to confirm that certificates in the chain are valid CA certificates was overwritten. This effectively bypasses the check that non-CA certificates must not be able to issue other certificates. If a "purpose" has been configured then there is a subsequent opportunity for checks that the certificate is a valid CA. All of the named "purpose" values implemented in libcrypto perform this check. Therefore, where a purpose is set the certificate chain will still be rejected even when the strict flag has been used. A purpose is set by default in libssl client and server certificate verification routines, but it can be overridden or removed by an application. In order to be affected, an application must explicitly set the X509_V_FLAG_X509_STRICT verification flag and either not set a purpose for the certificate verification or, in the case of TLS client or server applications, override the default purpose. OpenSSL versions 1.1.1h and newer are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1k. OpenSSL 1.0.2 is not impacted by this issue. Fixed in OpenSSL 1.1.1k (Affected 1.1.1h-1.1.1j).
References
openssl-security@openssl.org http://www.openwall.com/lists/oss-security/2021/03/27/1 Mailing List, Third Party Advisory
openssl-security@openssl.org http://www.openwall.com/lists/oss-security/2021/03/27/2 Mailing List, Third Party Advisory
openssl-security@openssl.org http://www.openwall.com/lists/oss-security/2021/03/28/3 Mailing List, Third Party Advisory
openssl-security@openssl.org http://www.openwall.com/lists/oss-security/2021/03/28/4 Mailing List, Third Party Advisory
openssl-security@openssl.org https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf Third Party Advisory
openssl-security@openssl.org https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=2a40b7bc7b94dd7de897a74571e7024f0cf0d63b
openssl-security@openssl.org https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44845 Third Party Advisory
openssl-security@openssl.org https://kc.mcafee.com/corporate/index?page=content&id=SB10356 Third Party Advisory
openssl-security@openssl.org https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CCBFLLVQVILIVGZMBJL3IXZGKWQISYNP/
openssl-security@openssl.org https://mta.openssl.org/pipermail/openssl-announce/2021-March/000198.html Mailing List, Vendor Advisory
openssl-security@openssl.org https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0013 Third Party Advisory
openssl-security@openssl.org https://security.FreeBSD.org/advisories/FreeBSD-SA-21:07.openssl.asc Third Party Advisory
openssl-security@openssl.org https://security.gentoo.org/glsa/202103-03 Third Party Advisory
openssl-security@openssl.org https://security.netapp.com/advisory/ntap-20210326-0006/ Third Party Advisory
openssl-security@openssl.org https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-openssl-2021-GHY28dJd Third Party Advisory
openssl-security@openssl.org https://www.openssl.org/news/secadv/20210325.txt Vendor Advisory
openssl-security@openssl.org https://www.oracle.com//security-alerts/cpujul2021.html Patch, Third Party Advisory
openssl-security@openssl.org https://www.oracle.com/security-alerts/cpuApr2021.html Patch, Third Party Advisory
openssl-security@openssl.org https://www.oracle.com/security-alerts/cpuapr2022.html Patch, Third Party Advisory
openssl-security@openssl.org https://www.oracle.com/security-alerts/cpujul2022.html Patch, Third Party Advisory
openssl-security@openssl.org https://www.oracle.com/security-alerts/cpuoct2021.html Patch, Third Party Advisory
openssl-security@openssl.org https://www.tenable.com/security/tns-2021-05 Third Party Advisory
openssl-security@openssl.org https://www.tenable.com/security/tns-2021-08 Third Party Advisory
openssl-security@openssl.org https://www.tenable.com/security/tns-2021-09 Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 http://www.openwall.com/lists/oss-security/2021/03/27/1 Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 http://www.openwall.com/lists/oss-security/2021/03/27/2 Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 http://www.openwall.com/lists/oss-security/2021/03/28/3 Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 http://www.openwall.com/lists/oss-security/2021/03/28/4 Mailing List, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=2a40b7bc7b94dd7de897a74571e7024f0cf0d63b
af854a3a-2127-422b-91ae-364da2661108 https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44845 Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://kc.mcafee.com/corporate/index?page=content&id=SB10356 Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CCBFLLVQVILIVGZMBJL3IXZGKWQISYNP/
af854a3a-2127-422b-91ae-364da2661108 https://mta.openssl.org/pipermail/openssl-announce/2021-March/000198.html Mailing List, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0013 Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://security.FreeBSD.org/advisories/FreeBSD-SA-21:07.openssl.asc Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://security.gentoo.org/glsa/202103-03 Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://security.netapp.com/advisory/ntap-20210326-0006/ Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-openssl-2021-GHY28dJd Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.openssl.org/news/secadv/20210325.txt Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.oracle.com//security-alerts/cpujul2021.html Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.oracle.com/security-alerts/cpuApr2021.html Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.oracle.com/security-alerts/cpuapr2022.html Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.oracle.com/security-alerts/cpujul2022.html Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.oracle.com/security-alerts/cpuoct2021.html Patch, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.tenable.com/security/tns-2021-05 Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.tenable.com/security/tns-2021-08 Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108 https://www.tenable.com/security/tns-2021-09 Third Party Advisory
Impacted products
Vendor Product Version
OpenSSL OpenSSL Version: Fixed in OpenSSL 1.1.1k (Affected 1.1.1h-1.1.1j)
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              "value": "The X509_V_FLAG_X509_STRICT flag enables additional security checks of the certificates present in a certificate chain. It is not set by default. Starting from OpenSSL version 1.1.1h a check to disallow certificates in the chain that have explicitly encoded elliptic curve parameters was added as an additional strict check. An error in the implementation of this check meant that the result of a previous check to confirm that certificates in the chain are valid CA certificates was overwritten. This effectively bypasses the check that non-CA certificates must not be able to issue other certificates. If a \"purpose\" has been configured then there is a subsequent opportunity for checks that the certificate is a valid CA. All of the named \"purpose\" values implemented in libcrypto perform this check. Therefore, where a purpose is set the certificate chain will still be rejected even when the strict flag has been used. A purpose is set by default in libssl client and server certificate verification routines, but it can be overridden or removed by an application. In order to be affected, an application must explicitly set the X509_V_FLAG_X509_STRICT verification flag and either not set a purpose for the certificate verification or, in the case of TLS client or server applications, override the default purpose. OpenSSL versions 1.1.1h and newer are affected by this issue. Users of these versions should upgrade to OpenSSL 1.1.1k. OpenSSL 1.0.2 is not impacted by this issue. Fixed in OpenSSL 1.1.1k (Affected 1.1.1h-1.1.1j)."
            }
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        },
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            "url": "https://www.openssl.org/policies/secpolicy.html#High",
            "value": "High"
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        ],
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          "problemtype_data": [
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                {
                  "lang": "eng",
                  "value": "Invalid Certificate Verification"
                }
              ]
            }
          ]
        },
        "references": {
          "reference_data": [
            {
              "name": "https://www.openssl.org/news/secadv/20210325.txt",
              "refsource": "CONFIRM",
              "url": "https://www.openssl.org/news/secadv/20210325.txt"
            },
            {
              "name": "https://www.openssl.org/news/secadv/20210325.txt",
              "refsource": "CONFIRM",
              "url": "https://www.openssl.org/news/secadv/20210325.txt"
            },
            {
              "name": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=2a40b7bc7b94dd7de897a74571e7024f0cf0d63b",
              "refsource": "CONFIRM",
              "url": "https://git.openssl.org/gitweb/?p=openssl.git;a=commitdiff;h=2a40b7bc7b94dd7de897a74571e7024f0cf0d63b"
            },
            {
              "name": "20210325 Multiple Vulnerabilities in OpenSSL Affecting Cisco Products: March 2021",
              "refsource": "CISCO",
              "url": "https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-openssl-2021-GHY28dJd"
            },
            {
              "name": "[oss-security] 20210327 OpenSSL 1.1.1 CVE-2021-3450 CA certificate check bypass with X509_V_FLAG_X509_STRICT, CVE-2021-3449 NULL pointer deref in signature_algorithms processing",
              "refsource": "MLIST",
              "url": "http://www.openwall.com/lists/oss-security/2021/03/27/1"
            },
            {
              "name": "[oss-security] 20210327 Re: OpenSSL 1.1.1 CVE-2021-3450 CA certificate check bypass with X509_V_FLAG_X509_STRICT, CVE-2021-3449 NULL pointer deref in signature_algorithms processing",
              "refsource": "MLIST",
              "url": "http://www.openwall.com/lists/oss-security/2021/03/27/2"
            },
            {
              "name": "[oss-security] 20210328 Re: OpenSSL 1.1.1 CVE-2021-3450 CA certificate check bypass with X509_V_FLAG_X509_STRICT, CVE-2021-3449 NULL pointer deref in signature_algorithms processing",
              "refsource": "MLIST",
              "url": "http://www.openwall.com/lists/oss-security/2021/03/28/3"
            },
            {
              "name": "[oss-security] 20210328 Re: OpenSSL 1.1.1 CVE-2021-3450 CA certificate check bypass with X509_V_FLAG_X509_STRICT, CVE-2021-3449 NULL pointer deref in signature_algorithms processing",
              "refsource": "MLIST",
              "url": "http://www.openwall.com/lists/oss-security/2021/03/28/4"
            },
            {
              "name": "GLSA-202103-03",
              "refsource": "GENTOO",
              "url": "https://security.gentoo.org/glsa/202103-03"
            },
            {
              "name": "FEDORA-2021-cbf14ab8f9",
              "refsource": "FEDORA",
              "url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/CCBFLLVQVILIVGZMBJL3IXZGKWQISYNP/"
            },
            {
              "name": "https://www.oracle.com/security-alerts/cpuApr2021.html",
              "refsource": "MISC",
              "url": "https://www.oracle.com/security-alerts/cpuApr2021.html"
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              "name": "https://www.tenable.com/security/tns-2021-09",
              "refsource": "CONFIRM",
              "url": "https://www.tenable.com/security/tns-2021-09"
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            {
              "name": "https://security.netapp.com/advisory/ntap-20210326-0006/",
              "refsource": "CONFIRM",
              "url": "https://security.netapp.com/advisory/ntap-20210326-0006/"
            },
            {
              "name": "https://security.FreeBSD.org/advisories/FreeBSD-SA-21:07.openssl.asc",
              "refsource": "MISC",
              "url": "https://security.FreeBSD.org/advisories/FreeBSD-SA-21:07.openssl.asc"
            },
            {
              "name": "https://www.tenable.com/security/tns-2021-05",
              "refsource": "CONFIRM",
              "url": "https://www.tenable.com/security/tns-2021-05"
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            {
              "name": "https://kc.mcafee.com/corporate/index?page=content\u0026id=SB10356",
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              "url": "https://kc.mcafee.com/corporate/index?page=content\u0026id=SB10356"
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              "url": "https://www.tenable.com/security/tns-2021-08"
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              "name": "https://mta.openssl.org/pipermail/openssl-announce/2021-March/000198.html",
              "refsource": "MISC",
              "url": "https://mta.openssl.org/pipermail/openssl-announce/2021-March/000198.html"
            },
            {
              "name": "https://www.oracle.com//security-alerts/cpujul2021.html",
              "refsource": "MISC",
              "url": "https://www.oracle.com//security-alerts/cpujul2021.html"
            },
            {
              "name": "https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44845",
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              "url": "https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44845"
            },
            {
              "name": "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0013",
              "refsource": "CONFIRM",
              "url": "https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0013"
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            {
              "name": "https://www.oracle.com/security-alerts/cpuoct2021.html",
              "refsource": "MISC",
              "url": "https://www.oracle.com/security-alerts/cpuoct2021.html"
            },
            {
              "name": "https://www.oracle.com/security-alerts/cpuapr2022.html",
              "refsource": "MISC",
              "url": "https://www.oracle.com/security-alerts/cpuapr2022.html"
            },
            {
              "name": "https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf",
              "refsource": "CONFIRM",
              "url": "https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf"
            },
            {
              "name": "https://www.oracle.com/security-alerts/cpujul2022.html",
              "refsource": "MISC",
              "url": "https://www.oracle.com/security-alerts/cpujul2022.html"
            }
          ]
        }
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    "assignerOrgId": "3a12439a-ef3a-4c79-92e6-6081a721f1e5",
    "assignerShortName": "openssl",
    "cveId": "CVE-2021-3450",
    "datePublished": "2021-03-25T14:25:14.287899Z",
    "dateReserved": "2021-03-19T00:00:00",
    "dateUpdated": "2024-09-17T03:07:10.879Z",
    "state": "PUBLISHED"
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Advisory\"]},{\"url\":\"https://www.oracle.com//security-alerts/cpujul2021.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://www.oracle.com/security-alerts/cpuApr2021.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://www.oracle.com/security-alerts/cpuapr2022.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://www.oracle.com/security-alerts/cpujul2022.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://www.oracle.com/security-alerts/cpuoct2021.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://www.tenable.com/security/tns-2021-05\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.tenable.com/security/tns-2021-08\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://www.tenable.com/security/tns-2021-09\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]}]}}"
  }
}


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Sightings

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  • Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
  • Confirmed: The vulnerability is confirmed from an analyst perspective.
  • Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
  • Patched: This vulnerability was successfully patched by the user reporting the sighting.
  • Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
  • Not confirmed: The user expresses doubt about the veracity of the vulnerability.
  • Not patched: This vulnerability was not successfully patched by the user reporting the sighting.