pt_chown in GNU C Library (aka glibc or libc6) before 2.18 does not properly check permissions for tty files, which allows local users to change the permission on the files and obtain access to arbitrary pseudo-terminals by leveraging a FUSE file system.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2013-2207 from the MITRE CVE dictionary dictionary and NIST NVD.
Not Vulnerable. This issue does not affect the version of glibc as shipped with Red Hat Enterprise Linux 5 and 6.
NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.
| Base Score | 2.6 |
|---|---|
| Base Metrics | AV:L/AC:H/Au:N/C:P/I:P/A:N |
| Access Vector | Local |
| Access Complexity | High |
| Authentication | None |
| Confidentiality Impact | Partial |
| Integrity Impact | Partial |
| Availability Impact | None |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux 7 | glibc | Not affected |
| Red Hat Enterprise Linux 6 | glibc | Not affected |
| Red Hat Enterprise Linux 5 | glibc | Not affected |
Vulmon