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osvGoogleOSV:GHSA-RM7V-GQFG-P2WC
HistoryMay 14, 2022 - 1:11 a.m.

Improper Validation of Certificate with Host Mismatch in Shibboleth Identity Provider and OpenSAML Java

2022-05-1401:11:29
Google
osv.dev
19
ssl certificate
validation
shibboleth identity provider
opensaml java
x.509 certificate
man-in-the-middle
spoofing

EPSS

0.001

Percentile

35.1%

The (1) HttpResource and (2) FileBackedHttpResource implementations in Shibboleth Identity Provider (IdP) before 2.4.1 and OpenSAML Java 2.6.2 do not verify that the server hostname matches a domain name in the subject’s Common Name (CN) or subjectAltName field of the X.509 certificate, which allows man-in-the-middle attackers to spoof SSL servers via an arbitrary valid certificate.

EPSS

0.001

Percentile

35.1%