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Test ID:1.3.6.1.4.1.25623.1.0.121446
Category:Gentoo Local Security Checks
Title:Gentoo Security Advisory GLSA 201603-04
Summary:Gentoo Linux Local Security Checks GLSA 201603-04
Description:Summary:
Gentoo Linux Local Security Checks GLSA 201603-04

Vulnerability Insight:
The fusermount binary calls setuid(geteuid()) to reset the RUID when it invokes /bin/mount so that it can use privileged mount options that are normally restricted if RUID != EUID. FUSE does not properly clear environment variables before invoking mount or umount as root allowing this to be passed to operations using elevated privileges such as LIBMOUNT_MTAB that is used by the mount commands debugging feature.

Solution:
Update the affected packages to the latest available version.

CVSS Score:
3.6

CVSS Vector:
AV:L/AC:L/Au:N/C:N/I:P/A:P

Cross-Ref: Common Vulnerability Exposure (CVE) ID: CVE-2015-3202
BugTraq ID: 74765
http://www.securityfocus.com/bid/74765
Debian Security Information: DSA-3266 (Google Search)
http://www.debian.org/security/2015/dsa-3266
Debian Security Information: DSA-3268 (Google Search)
http://www.debian.org/security/2015/dsa-3268
https://www.exploit-db.com/exploits/37089/
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
http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160106.html
http://lists.fedoraproject.org/pipermail/package-announce/2015-June/160094.html
https://security.gentoo.org/glsa/201603-04
https://security.gentoo.org/glsa/201701-19
http://packetstormsecurity.com/files/132021/Fuse-Local-Privilege-Escalation.html
https://gist.github.com/taviso/ecb70eb12d461dd85cba
https://twitter.com/taviso/status/601370527437967360
http://www.openwall.com/lists/oss-security/2015/05/21/9
http://www.securitytracker.com/id/1032386
SuSE Security Announcement: openSUSE-SU-2015:0997 (Google Search)
http://lists.opensuse.org/opensuse-updates/2015-06/msg00005.html
SuSE Security Announcement: openSUSE-SU-2015:1003 (Google Search)
http://lists.opensuse.org/opensuse-updates/2015-06/msg00007.html
http://www.ubuntu.com/usn/USN-2617-1
http://www.ubuntu.com/usn/USN-2617-2
http://www.ubuntu.com/usn/USN-2617-3
CopyrightCopyright (C) 2016 Eero Volotinen

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