rhnreg_ks in Red Hat Network Client Tools (aka rhn-client-tools) on Red Hat Gluster Storage 2.1 and Enterprise Linux (RHEL) 5, 6, and 7 does not properly validate hostnames in X.509 certificates from SSL servers, which allows remote attackers to prevent system registration via a man-in-the-middle attack.
Source: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2015-1777
Reference (s):
- BID:72943
- URL: http://www.securityfocus.com/bid/72943
- https://bugzilla.redhat.com/show_bug.cgi?id=1198740
- MLIST:[oss-security] 20150304 Another Python app (rhn-setup: rhnreg_ks) not checking hostnames in certs properly CVE-2015-1777
- URL: http://www.openwall.com/lists/oss-security/2015/03/04/7