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UK Cyber Defence
VulnerabilityModified

CVE-2022-1343

The function `OCSP_basic_verify` verifies the signer certificate on an OCSP response.

MEDIUM 5.3EPSS 1.21%

Does this matter?

Lower severity and a low EPSS score (1.21%). Track it; it rarely justifies an emergency change on its own.

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).

CVSS 3.1
5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
EPSS
1.21% probability · 67th percentile
CISA KEV
Not listed
Weakness
CWE-295
Affected
openssl/openssl · netapp/active iq unified manager · netapp/clustered data ontap · netapp/clustered data ontap antivirus connector · netapp/santricity smi-s provider · netapp/smi-s provider · netapp/snapmanager · netapp/solidfire\, enterprise sds \& hci storage node · netapp/solidfire \& hci management node · netapp/a250 firmware · netapp/a700s firmware · netapp/aff 500f firmware · netapp/aff 8300 firmware · netapp/aff 8700 firmware · netapp/aff a400 firmware · netapp/fabric-attached storage a400 firmware · netapp/fas 500f firmware · netapp/fas 8300 firmware · netapp/fas 8700 firmware · netapp/h300e firmware · +6 more
Source
openssl-security@openssl.org

Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.