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.
2014-08-21T14:55:05.100
2025-04-12T10:46:40.837
Deferred
CVSSv2: 5.8 (MEDIUM)
AV:N/AC:M/Au:N/C:P/I:P/A:N
8.6
4.9
Type | Vendor | Product | Version/Range | Vulnerable? |
---|---|---|---|---|
Application | apache | httpclient | ≤ 4.3.4 | Yes |
Application | apache | httpasyncclient | ≤ 4.0.1 | Yes |