NVD - CVE-2021-3450

CVE-2021-3450 Detail

Modified

This CVE record has been updated after NVD enrichment efforts were completed. Enrichment data supplied by the NVD may require amendment due to these changes.

Description

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).

Metrics

NVD enrichment efforts reference publicly available information to associate vector strings. CVSS information contributed by other sources is also displayed.

CVSS 4.0 Severity and Vector Strings:

NIST: NVD

N/A

NVD assessment not yet provided.

CVSS 3.x Severity and Vector Strings:

NIST: NVD

Base Score: 7.4 HIGH

Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

CVSS 2.0 Severity and Vector Strings:

National Institute of Standards and Technology

NIST: NVD

Base Score: 5.8 MEDIUM

Vector: (AV:N/AC:M/Au:N/C:P/I:P/A:N)

References to Advisories, Solutions, and Tools

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Hyperlink	Resource
http://www.openwall.com/lists/oss-security/2021/03/27/1	Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/03/27/1	Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/03/27/2	Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/03/27/2	Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/03/28/3	Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/03/28/3	Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/03/28/4	Mailing List Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/03/28/4	Mailing List Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf	Third Party Advisory
https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf	Third Party Advisory
https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=2a40b7bc7b94dd7de897a74571e7024f0cf0d63b
https://git.openssl.org/gitweb/?p=openssl.git%3Ba=commitdiff%3Bh=2a40b7bc7b94dd7de897a74571e7024f0cf0d63b
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44845	Third Party Advisory
https://kb.pulsesecure.net/articles/Pulse_Security_Advisories/SA44845	Third Party Advisory
https://kc.mcafee.com/corporate/index?page=content&id=SB10356	Third Party Advisory
https://kc.mcafee.com/corporate/index?page=content&id=SB10356	Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CCBFLLVQVILIVGZMBJL3IXZGKWQISYNP/
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CCBFLLVQVILIVGZMBJL3IXZGKWQISYNP/
https://mta.openssl.org/pipermail/openssl-announce/2021-March/000198.html	Mailing List Vendor Advisory
https://mta.openssl.org/pipermail/openssl-announce/2021-March/000198.html	Mailing List Vendor Advisory
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0013	Third Party Advisory
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0013	Third Party Advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-21:07.openssl.asc	Third Party Advisory
https://security.FreeBSD.org/advisories/FreeBSD-SA-21:07.openssl.asc	Third Party Advisory
https://security.gentoo.org/glsa/202103-03	Third Party Advisory
https://security.gentoo.org/glsa/202103-03	Third Party Advisory
https://security.netapp.com/advisory/ntap-20210326-0006/	Third Party Advisory
https://security.netapp.com/advisory/ntap-20210326-0006/	Third Party Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-openssl-2021-GHY28dJd	Third Party Advisory
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-openssl-2021-GHY28dJd	Third Party Advisory
https://www.openssl.org/news/secadv/20210325.txt	Vendor Advisory
https://www.openssl.org/news/secadv/20210325.txt	Vendor Advisory
https://www.oracle.com//security-alerts/cpujul2021.html	Patch Third Party Advisory
https://www.oracle.com//security-alerts/cpujul2021.html	Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpuApr2021.html	Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpuApr2021.html	Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.html	Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpuapr2022.html	Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpujul2022.html	Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpujul2022.html	Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpuoct2021.html	Patch Third Party Advisory
https://www.oracle.com/security-alerts/cpuoct2021.html	Patch Third Party Advisory
https://www.tenable.com/security/tns-2021-05	Third Party Advisory
https://www.tenable.com/security/tns-2021-05	Third Party Advisory
https://www.tenable.com/security/tns-2021-08	Third Party Advisory
https://www.tenable.com/security/tns-2021-08	Third Party Advisory
https://www.tenable.com/security/tns-2021-09	Third Party Advisory
https://www.tenable.com/security/tns-2021-09	Third Party Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-295	Improper Certificate Validation	NIST

Known Affected Software Configurations Switch to CPE 2.2

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Denotes Vulnerable Software
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Change History

31 change records found show changes

Quick Info

CVE Dictionary Entry:
CVE-2021-3450
NVD Published Date:
03/25/2021
NVD Last Modified:
11/21/2024
Source:
OpenSSL Software Foundation

CVE-2021-3450 Detail

Description

Metrics

References to Advisories, Solutions, and Tools

Weakness Enumeration

Known Affected Software Configurations Switch to CPE 2.2

CPEs loading, please wait.

Change History

CVE Modified by CVE 11/21/2024 1:21:33 AM

CVE Modified by OpenSSL Software Foundation 5/14/2024 5:24:29 AM

CVE Modified by OpenSSL Software Foundation 11/06/2023 10:38:00 PM

Reanalysis by NIST 8/04/2023 1:06:26 PM

Modified Analysis by NIST 2/28/2023 10:19:30 AM

CVE Modified by OpenSSL Software Foundation 7/25/2022 2:16:24 PM

Modified Analysis by NIST 4/29/2022 1:50:17 PM

CVE Modified by OpenSSL Software Foundation 4/19/2022 8:16:17 PM

CVE Modified by OpenSSL Software Foundation 3/10/2022 12:42:52 PM

CVE Modified by OpenSSL Software Foundation 10/20/2021 7:17:33 AM

CVE Modified by OpenSSL Software Foundation 7/20/2021 7:15:38 PM

CVE Modified by OpenSSL Software Foundation 7/15/2021 7:15:11 PM

CVE Modified by OpenSSL Software Foundation 7/13/2021 11:15:07 PM

Modified Analysis by NIST 6/17/2021 12:59:59 PM

CVE Modified by OpenSSL Software Foundation 6/14/2021 2:15:36 PM

CVE Modified by OpenSSL Software Foundation 5/11/2021 6:15:09 PM

CVE Modified by OpenSSL Software Foundation 5/06/2021 9:15:12 AM

CVE Modified by OpenSSL Software Foundation 4/15/2021 5:15:13 AM

Modified Analysis by NIST 4/13/2021 3:19:50 PM

CVE Modified by OpenSSL Software Foundation 4/08/2021 6:15:13 PM

CVE Modified by OpenSSL Software Foundation 4/01/2021 10:15:12 PM

CVE Modified by OpenSSL Software Foundation 4/01/2021 6:15:12 PM

Initial Analysis by NIST 3/31/2021 3:51:49 PM

CVE Modified by OpenSSL Software Foundation 3/31/2021 10:15:20 AM

CVE Modified by OpenSSL Software Foundation 3/28/2021 8:15:12 PM

CVE Modified by OpenSSL Software Foundation 3/28/2021 5:15:13 PM

CVE Modified by OpenSSL Software Foundation 3/27/2021 8:15:12 PM

CVE Modified by OpenSSL Software Foundation 3/27/2021 5:15:11 PM

CVE Modified by OpenSSL Software Foundation 3/26/2021 6:15:13 PM

CVE Modified by OpenSSL Software Foundation 3/26/2021 7:15:14 AM

CVE Modified by OpenSSL Software Foundation 3/25/2021 3:15:15 PM

Quick Info