mount.ecryptfs_private.c in eCryptfs-utils does not validate mount destination filesystem types, which allows local users to gain privileges by mounting over a nonstandard filesystem, as demonstrated by /proc/$pid.
The MITRE CVE dictionary describes this issue as:
Find out more about CVE-2016-1572 from the MITRE CVE dictionary dictionary and NIST NVD.
NOTE: The following CVSS v2 metrics and score provided are preliminary and subject to review.
| Base Score | 6 |
|---|---|
| Base Metrics | AV:L/AC:M/Au:S/C:C/I:C/A:N |
| Access Vector | Local |
| Access Complexity | Medium |
| Authentication | Single |
| Confidentiality Impact | Complete |
| Integrity Impact | Complete |
| Availability Impact | None |
Find out more about Red Hat support for the Common Vulnerability Scoring System (CVSS).
| Platform | Package | State |
|---|---|---|
| Red Hat Enterprise Linux 6 | ecryptfs-utils | Not affected |
| Red Hat Enterprise Linux 5 | ecryptfs-utils | Not affected |
Vulmon