CVE-2022-1343

OCSP_basic_verify may incorrectly verify the response signing certificate

Published May 3, 2022 CVSS 3.1 · 5.3 Medium EPSS 2.2% KEV · Not listed
Description
The function `OCSP_basic_verify` verifies the signer certificate on an OCSP response. In the case where the (non-default) flag OCSP_NOCHECKS is used then the response will be positive (meaning a successful verification) even in the case where the response signing certificate fails to verify. It is anticipated that most users of `OCSP_basic_verify` will not use the OCSP_NOCHECKS flag. In this case the `OCSP_basic_verify` function will return a negative value (indicating a fatal error) in the case of a certificate verification failure. The normal expected return value in this case would be 0. This issue also impacts the command line OpenSSL "ocsp" application. When verifying an ocsp response with the "-no_cert_checks" option the command line application will report that the verification is successful even though it has in fact failed. In this case the incorrect successful response will also be accompanied by error messages showing the failure and contradicting the apparently successful result. Fixed in OpenSSL 3.0.3 (Affected 3.0.0,3.0.1,3.0.2).

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

Source ID Title
EUVD EUVD EUVD-2022-4552 The function `OCSP_basic_verify` verifies the signer certificate on an OCSP response. In the case where the (non-default) flag OCSP_NOCHECKS is used then the response will be positive (meaning a successful verification) even in the case where the response signing certificate fails to verify. It is anticipated that most users of `OCSP_basic_verify` will not use the OCSP_NOCHECKS flag. In this case the `OCSP_basic_verify` function will return a negative value (indicating a fatal error) in the case of a certificate verification failure. The normal expected return value in this case would be 0. This issue also impacts the command line OpenSSL "ocsp" application. When verifying an ocsp response with the "-no_cert_checks" option the command line application will report that the verification is successful even though it has in fact failed. In this case the incorrect successful response will also be accompanied by error messages showing the failure and contradicting the apparently successful result. Fixed in OpenSSL 3.0.3 (Affected 3.0.0,3.0.1,3.0.2).
Github GHSA Github GHSA GHSA-mfm6-r9g2-q4r7 `OCSP_basic_verify` may incorrectly verify the response signing certificate
Ubuntu USN Ubuntu USN USN-5402-1 OpenSSL vulnerabilities
Weaknesses

Sources

Status
PUBLISHED
Assigner
openssl
Published
Updated
Oct 14, 2026, 12:43 PM
Reserved
Apr 13, 2022, 12:00 AM
Status
Modified
Published
May 3, 2022, 4:15 PM
Modified
Oct 14, 2026, 1:17 PM
Severity
Moderate
Public date
May 3, 2022, 12:00 AM