CVE-2016-1572

Severity: high (CVSS 8.4 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2016-01-22 · updated 2026-06-17
Weakness: CWE-269

Description

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.

Affected products

Canonical Ubuntu Linux: 12.04, 14.04, 15.04, 15.10
Debian Linux: 7.0, 8.0
Ecryptfs-Utils: before 109 — fixed in 109
Fedoraproject Fedora: 22, 23
openSUSE Leap: 42.1
Opensuse: 13.1, 13.2

How to fix

Upgrade to a fixed version: Ecryptfs-Utils 109. Check the vendor advisory for mitigations.

References

http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177359.html
http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177396.html
http://lists.opensuse.org/opensuse-updates/2016-01/msg00091.html
http://lists.opensuse.org/opensuse-updates/2016-01/msg00118.html
http://lists.opensuse.org/opensuse-updates/2016-02/msg00004.html
http://www.debian.org/security/2016/dsa-3450
http://www.openwall.com/lists/oss-security/2016/01/20/6
http://www.securitytracker.com/id/1034791
http://www.ubuntu.com/usn/USN-2876-1
https://bazaar.launchpad.net/~ecryptfs/ecryptfs/trunk/revision/870
https://bugs.launchpad.net/ecryptfs/+bug/1530566
http://lists.fedoraproject.org/pipermail/package-announce/2016-February/177359.html

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