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.
Weakness
The product does not validate, or incorrectly validates, a certificate.
Affected Software
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Rhn-client-tools | Redhat | * | * |
| Rhn-client-tools | Ubuntu | artful | * |
| Rhn-client-tools | Ubuntu | esm-apps/xenial | * |
| Rhn-client-tools | Ubuntu | trusty | * |
| Rhn-client-tools | Ubuntu | upstream | * |
| Rhn-client-tools | Ubuntu | utopic | * |
| Rhn-client-tools | Ubuntu | vivid | * |
| Rhn-client-tools | Ubuntu | wily | * |
| Rhn-client-tools | Ubuntu | xenial | * |
| Rhn-client-tools | Ubuntu | yakkety | * |
| Rhn-client-tools | Ubuntu | zesty | * |