CVE-2016-7097 Information

Description

The filesystem implementation in the Linux kernel through 4.8.2 preserves the setgid bit during a setxattr call which allows local users to gain group privileges by leveraging the existence of a setgid program with restrictions on execute permissions.

CVSS Vector

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N

Reference

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=073931017b49d9458aa351605b43a7e34598caef http://marc.info/?l=linux-fsdevel&m=147162313630259&w=2 http://rhn.redhat.com/errata/RHSA-2017-0817.html http://www.openwall.com/lists/oss-security/2016/08/26/3 http://www.securityfocus.com/bid/92659 http://www.securitytracker.com/id/1038201 http://www.spinics.net/lists/linux-fsdevel/msg98328.html http://www.ubuntu.com/usn/USN-3146-1 http://www.ubuntu.com/usn/USN-3146-2 http://www.ubuntu.com/usn/USN-3147-1 https://access.redhat.com/errata/RHSA-2017:1842 https://access.redhat.com/errata/RHSA-2017:2077 https://access.redhat.com/errata/RHSA-2017:2669 https://bugzilla.redhat.com/show_bug.cgi?id=1368938 https://github.com/torvalds/linux/commit/073931017b49d9458aa351605b43a7e34598caef https://source.android.com/security/bulletin/2017-04-01 https://support.f5.com/csp/article/K31603170?utm_source=f5support&utm_medium=RSS

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

LOW

Availability Impact

LOW

Base Score

NONE

Base Severity

4.4