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.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2015-1777 from the MITRE CVE dictionary dictionary and NIST NVD.
This issue affects the versions of rhn-client-tools as shipped with Red Hat Enterprise Linux 5, 6 and 7. Red Hat Product Security has rated this issue as having Moderate security impact. A future update may address this issue. For additional information, refer to the Issue Severity Classification: https://access.redhat.com/security/updates/classification/.
NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.
| Base Score | 4.3 |
|---|---|
| Base Metrics | AV:N/AC:M/Au:N/C:N/I:N/A:P |
| Access Vector | Network |
| Access Complexity | Medium |
| Authentication | None |
| Confidentiality Impact | None |
| Integrity Impact | None |
| Availability Impact | Partial |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
| Platform | Package | State |
|---|---|---|
| Red Hat Gluster Storage 2.1 | rhn-client-tools | Will not fix |
| Red Hat Enterprise Linux 7 | rhn-client-tools | Will not fix |
| Red Hat Enterprise Linux 6 | rhn-client-tools | Will not fix |
| Red Hat Enterprise Linux 5 | rhn-client-tools | Will not fix |
Vulmon