Description
fusermount in FUSE before 2.9.3-15 does not properly clear the environment before invoking (1) mount or (2) umount as root, which allows local users to write to arbitrary files via a crafted LIBMOUNT_MTAB environment variable that is used by mount's debugging feature.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
n/a n/a
n/aaffected
References
- http://www.debian.org/security/2015/dsa-3268 ↗
- http://www.ubuntu.com/usn/USN-2617-1 ↗
- http://lists.fedoraproject.org/pipermail/package-announce/2015-June/159543.html ↗
- http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160094.html ↗
- http://lists.fedoraproject.org/pipermail/package-announce/2015-June/159831.html ↗
- http://www.securitytracker.com/id/1032386 ↗
- https://gist.github.com/taviso/ecb70eb12d461dd85cba ↗
- http://www.securityfocus.com/bid/74765 ↗
- http://lists.fedoraproject.org/pipermail/package-announce/2015-June/159298.html ↗
- http://lists.opensuse.org/opensuse-updates/2015-06/msg00007.html ↗
- http://www.debian.org/security/2015/dsa-3266 ↗
- https://security.gentoo.org/glsa/201603-04 ↗
- http://www.ubuntu.com/usn/USN-2617-2 ↗
- http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160106.html ↗
- http://lists.fedoraproject.org/pipermail/package-announce/2015-June/159683.html ↗
- https://security.gentoo.org/glsa/201701-19 ↗
- http://www.openwall.com/lists/oss-security/2015/05/21/9 ↗
- http://lists.opensuse.org/opensuse-updates/2015-06/msg00005.html ↗
- http://packetstormsecurity.com/files/132021/Fuse-Local-Privilege-Escalation.html ↗
- https://twitter.com/taviso/status/601370527437967360 ↗
- https://www.exploit-db.com/exploits/37089/ ↗
- http://www.ubuntu.com/usn/USN-2617-3 ↗