Improper Verification of Cryptographic Signature in org.apache.httpcomponents:httpclient
Moderate severity
GitHub Reviewed
Published
Oct 17, 2018
to the GitHub Advisory Database
•
Updated Apr 12, 2024
Package
Affected versions
< 4.3.5
Patched versions
4.3.5
Description
Published by the National Vulnerability Database
Aug 21, 2014
Published to the GitHub Advisory Database
Oct 17, 2018
Reviewed
Jun 16, 2020
Last updated
Apr 12, 2024
Credits
-
MarkLee131 Analyst
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