Veracode Vulnerability DatabaseVERACODE:12109Authorization Bypass
6.7 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
7.2 High
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C
Linux kernel is vulnerable to authorization bypass. The ovl_setattr function in fs/overlayfs/inode.c attempts to merge distinct setattr operations, which allows local users to bypass intended access restrictions and modify the attributes of arbitrary overlay files via a crafted application.
References
git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=acff81ec2c79492b180fade3c2894425cd35a545
lists.opensuse.org/opensuse-security-announce/2016-03/msg00039.html
lists.opensuse.org/opensuse-security-announce/2016-03/msg00040.html
lists.opensuse.org/opensuse-security-announce/2016-03/msg00043.html
packetstormsecurity.com/files/135151/Ubuntu-14.04-LTS-15.10-overlayfs-Local-Root.html
rhn.redhat.com/errata/RHSA-2016-1532.html
rhn.redhat.com/errata/RHSA-2016-1539.html
rhn.redhat.com/errata/RHSA-2016-1541.html
www.openwall.com/lists/oss-security/2015/12/23/5
www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html
www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
www.securityfocus.com/bid/79671
www.securitytracker.com/id/1034548
www.ubuntu.com/usn/USN-2857-1
www.ubuntu.com/usn/USN-2857-2
www.ubuntu.com/usn/USN-2858-1
www.ubuntu.com/usn/USN-2858-2
www.ubuntu.com/usn/USN-2858-3
access.redhat.com/errata/RHSA-2016:1532
access.redhat.com/errata/RHSA-2016:1539
access.redhat.com/errata/RHSA-2016:1541
access.redhat.com/security/cve/CVE-2015-8660
access.redhat.com/security/updates/classification/#important
bugzilla.redhat.com/show_bug.cgi?id=1291329
bugzilla.redhat.com/show_bug.cgi?id=1343658
github.com/torvalds/linux/commit/acff81ec2c79492b180fade3c2894425cd35a545
rhn.redhat.com/errata/RHSA-2016-1532.html
www.exploit-db.com/exploits/39166/
www.exploit-db.com/exploits/39230/
www.exploit-db.com/exploits/40688/
Related
6.7 Medium
CVSS3
Attack Vector
LOCAL
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
7.2 High
CVSS2
Access Vector
LOCAL
Access Complexity
LOW
Authentication
NONE
Confidentiality Impact
COMPLETE
Integrity Impact
COMPLETE
Availability Impact
COMPLETE
AV:L/AC:L/Au:N/C:C/I:C/A:C