CVE-2015-3202

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.

References

https://www.exploit-db.com/exploits/37089/

https://twitter.com/taviso/status/601370527437967360

https://security.gentoo.org/glsa/201701-19

https://security.gentoo.org/glsa/201603-04

https://gist.github.com/taviso/ecb70eb12d461dd85cba

https://euvd.enisa.europa.eu/vulnerability/EUVD-2015-3268

http://www.ubuntu.com/usn/USN-2617-3

http://www.ubuntu.com/usn/USN-2617-2

http://www.ubuntu.com/usn/USN-2617-1

http://www.securitytracker.com/id/1032386

http://www.securityfocus.com/bid/74765

http://www.openwall.com/lists/oss-security/2015/05/21/9

http://www.debian.org/security/2015/dsa-3268

http://www.debian.org/security/2015/dsa-3266

http://packetstormsecurity.com/files/132021/Fuse-Local-Privilege-Escalation.html

http://lists.opensuse.org/opensuse-updates/2015-06/msg00007.html

http://lists.opensuse.org/opensuse-updates/2015-06/msg00005.html

http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160106.html

http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160094.html

http://lists.fedoraproject.org/pipermail/package-announce/2015-June/159831.html

http://lists.fedoraproject.org/pipermail/package-announce/2015-June/159683.html

http://lists.fedoraproject.org/pipermail/package-announce/2015-June/159543.html

http://lists.fedoraproject.org/pipermail/package-announce/2015-June/159298.html

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

EPSS