CVE-2021-3450Published

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 e…

Exact source revision recorded 24 Oct 2026 18:17:33 UTC. It does not establish the source's current position. Latest evidence.

Recorded JSON

nvd · CVE-2021-3450

Published

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).

NVD analysis and CPE criteria are source context, not proof that a package or your environment is affected. Complete affected data, logical configurations and SSVC are retained in the original JSON.

Source analysis status: Modified

Weakness classifications: CWE-295

Original publisher date fields

published: 2021-03-25T15:15:13.560

lastModified: 2026-10-08T21:17:40.070

52 source CPE criteria · context only

cpe:2.3:a:openssl:openssl:*:*:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:12.2:-:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:12.2:p1:*:*:*:*:*:*
cpe:2.3:o:freebsd:freebsd:12.2:p2:*:*:*:*:*:*
cpe:2.3:o:netapp:santricity_smi-s_provider_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:netapp:santricity_smi-s_provider:-:*:*:*:*:*:*:*
cpe:2.3:o:netapp:storagegrid_firmware:-:*:*:*:*:*:*:*
cpe:2.3:h:netapp:storagegrid:-:*:*:*:*:*:*:*
cpe:2.3:o:windriver:linux:-:*:*:*:cd:*:*:*
cpe:2.3:o:windriver:linux:17.0:*:*:*:lts:*:*:*
cpe:2.3:o:windriver:linux:18.0:*:*:*:lts:*:*:*
cpe:2.3:o:windriver:linux:19.0:*:*:*:lts:*:*:*
cpe:2.3:a:netapp:cloud_volumes_ontap_mediator:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:oncommand_workflow_automation:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:ontap_select_deploy_administration_utility:-:*:*:*:*:*:*:*
cpe:2.3:a:netapp:storagegrid:-:*:*:*:*:*:*:*
cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*
cpe:2.3:a:tenable:nessus:*:*:*:*:*:*:*:*
cpe:2.3:a:tenable:nessus_agent:*:*:*:*:*:*:*:*
cpe:2.3:a:tenable:nessus_network_monitor:5.11.0:*:*:*:*:*:*:*
cpe:2.3:a:tenable:nessus_network_monitor:5.11.1:*:*:*:*:*:*:*
cpe:2.3:a:tenable:nessus_network_monitor:5.12.0:*:*:*:*:*:*:*
cpe:2.3:a:tenable:nessus_network_monitor:5.12.1:*:*:*:*:*:*:*
cpe:2.3:a:tenable:nessus_network_monitor:5.13.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:commerce_guided_search:11.3.2:*:*:*:*:*:*:*
cpe:2.3:a:oracle:enterprise_manager_for_storage_management:13.4.0.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:graalvm:19.3.5:*:*:*:enterprise:*:*:*
cpe:2.3:a:oracle:graalvm:20.3.1.2:*:*:*:enterprise:*:*:*
cpe:2.3:a:oracle:graalvm:21.0.0.2:*:*:*:enterprise:*:*:*
cpe:2.3:a:oracle:jd_edwards_enterpriseone_tools:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:jd_edwards_world_security:a9.4:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_connectors:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_enterprise_monitor:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_server:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:mysql_workbench:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:peoplesoft_enterprise_peopletools:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:secure_backup:*:*:*:*:*:*:*:*
cpe:2.3:a:oracle:secure_global_desktop:5.6:*:*:*:*:*:*:*
cpe:2.3:a:oracle:weblogic_server:12.2.1.4.0:*:*:*:*:*:*:*
cpe:2.3:a:oracle:weblogic_server:14.1.1.0.0:*:*:*:*:*:*:*
cpe:2.3:a:mcafee:web_gateway:8.2.19:*:*:*:*:*:*:*
cpe:2.3:a:mcafee:web_gateway:9.2.10:*:*:*:*:*:*:*
cpe:2.3:a:mcafee:web_gateway:10.1.1:*:*:*:*:*:*:*
cpe:2.3:a:mcafee:web_gateway_cloud_service:8.2.19:*:*:*:*:*:*:*
cpe:2.3:a:mcafee:web_gateway_cloud_service:9.2.10:*:*:*:*:*:*:*
cpe:2.3:a:mcafee:web_gateway_cloud_service:10.1.1:*:*:*:*:*:*:*
cpe:2.3:o:sonicwall:sma100_firmware:*:*:*:*:*:*:*:*
cpe:2.3:h:sonicwall:sma100:-:*:*:*:*:*:*:*
cpe:2.3:a:sonicwall:capture_client:*:*:*:*:*:*:*:*
cpe:2.3:a:sonicwall:email_security:*:*:*:*:*:*:*:*
cpe:2.3:o:sonicwall:sonicos:*:*:*:*:*:*:*:*
cpe:2.3:a:nodejs:node.js:*:*:*:*:-:*:*:*

The original JSON retains the logical configuration operators, exclusions and version bounds.

Source published: 25 Mar 2021 15:15:13 UTC
Source modified: 8 Oct 2026 21:17:40 UTC
Observed here: 24 Oct 2026 18:17:33 UTC
Source terms: NIST NVD usage terms; underlying source attribution retained

Original source record · Cite this exact observation · Complete original publisher JSON

This view projects the publisher's source fields for reading; the original JSON retains additional fields and CVE enrichment containers. Attribution: nvd · NIST NVD usage terms; underlying source attribution retained. Source text is retained; field grouping and change labels are provided by ChangeIntel.

CVSS 3.1 · [email protected] · Primary · 7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

CVSS 2.0 · [email protected] · Primary · 5.8 AV:N/AC:M/Au:N/C:P/I:P/A:N