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osvGoogleOSV:GHSA-CFH5-3GHH-WFJX
HistoryOct 17, 2018 - 12:05 a.m.

Improper Verification of Cryptographic Signature in org.apache.httpcomponents:httpclient

2018-10-1700:05:06
Google
osv.dev
17

6.7 Medium

AI Score

Confidence

Low

0.004 Low

EPSS

Percentile

74.9%

org.apache.http.conn.ssl.AbstractVerifier in Apache HttpComponents HttpClient before 4.3.5 and HttpAsyncClient before 4.0.2 does not properly 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 a “CN=” string in a field in the distinguished name (DN) of a certificate, as demonstrated by the “foo,CN=www.apache.org” string in the O field.

References