A flaw was found in the way OpenSSH handled PAM authentication when using privilege separation. An attacker with valid credentials on the system and able to fully compromise a non-privileged pre-authentication process using a different flaw could use this flaw to authenticate as other users.
Find out more about CVE-2015-6563 from the MITRE CVE dictionary dictionary and NIST NVD.
| Base Score | 6.2 |
|---|---|
| Base Metrics | AV:L/AC:H/Au:N/C:C/I:C/A:C |
| Access Vector | Local |
| Access Complexity | High |
| Authentication | None |
| Confidentiality Impact | Complete |
| Integrity Impact | Complete |
| Availability Impact | Complete |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
| Platform | Errata | Release Date |
|---|---|---|
| Red Hat Enterprise Linux 6 (openssh) | RHSA-2016:0741 | 2016-05-10 |
| Red Hat Enterprise Linux 7 (openssh) | RHSA-2015:2088 | 2015-11-19 |
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux 5 | openssh | Will not fix |
| Red Hat Enterprise Linux 4 | openssh | Will not fix |
Vulmon