Vulnerability CVE-2016-4997

Vulnerability CVE-2016-4997

Published: 2016-07-03

Description:

The compat IPT_SO_SET_REPLACE and IP6T_SO_SET_REPLACE setsockopt implementations in the netfilter subsystem in the Linux kernel before 4.6.3 allow local users to gain privileges or cause a denial of service (memory corruption) by leveraging in-container root access to provide a crafted offset value that triggers an unintended decrement.

See advisories in our WLB2 database:

	Topic	Author	Date
Med.	Linux Kernel 4.6.3 Netfilter Privilege Escalation	vnik	27.09.2016

Type:

CWE-264

(Permissions, Privileges, and Access Controls)

CVSS2 => (AV:L/AC:L/Au:N/C:C/I:C/A:C)

CVSS Base Score	Impact Subscore	Exploitability Subscore
7.2/10	10/10	3.9/10

Exploit range	Attack complexity	Authentication
Local	Low	No required
Confidentiality impact	Integrity impact	Availability impact
Complete	Complete	Complete

Affected software
Oracle -> Linux
Novell -> Suse linux enterprise desktop
Novell -> Suse linux enterprise live patching
Novell -> Suse linux enterprise module for public cloud
Novell -> Suse linux enterprise real time extension
Novell -> Suse linux enterprise server
Novell -> Suse linux enterprise software development kit
Novell -> Suse linux enterprise workstation extension
Linux -> Linux kernel
Canonical -> Ubuntu linux

References:

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=ce683e5f9d045e5d67d1312a42b359cb2ab2a13c

http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00060.html

http://lists.opensuse.org/opensuse-security-announce/2016-06/msg00061.html

http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00000.html

http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00007.html

http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00027.html

http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00044.html

http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00048.html

http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00050.html

http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00051.html

http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00052.html

http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00053.html

http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00054.html

http://lists.opensuse.org/opensuse-security-announce/2016-08/msg00055.html

http://rhn.redhat.com/errata/RHSA-2016-1847.html

http://rhn.redhat.com/errata/RHSA-2016-1875.html

http://rhn.redhat.com/errata/RHSA-2016-1883.html

http://www.debian.org/security/2016/dsa-3607

http://www.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.6.3

http://www.openwall.com/lists/oss-security/2016/06/24/5

http://www.openwall.com/lists/oss-security/2016/09/29/10

http://www.oracle.com/technetwork/topics/security/linuxbulletinjul2016-3090544.html

http://www.oracle.com/technetwork/topics/security/linuxbulletinoct2016-3090545.html

http://www.oracle.com/technetwork/topics/security/ovmbulletinoct2016-3090547.html

http://www.securityfocus.com/bid/91451

http://www.securitytracker.com/id/1036171

http://www.ubuntu.com/usn/USN-3016-1

http://www.ubuntu.com/usn/USN-3016-2

http://www.ubuntu.com/usn/USN-3016-3

http://www.ubuntu.com/usn/USN-3016-4

http://www.ubuntu.com/usn/USN-3017-1

http://www.ubuntu.com/usn/USN-3017-2

http://www.ubuntu.com/usn/USN-3017-3

http://www.ubuntu.com/usn/USN-3018-1

http://www.ubuntu.com/usn/USN-3018-2

http://www.ubuntu.com/usn/USN-3019-1

http://www.ubuntu.com/usn/USN-3020-1

https://bugzilla.redhat.com/show_bug.cgi?id=1349722

https://github.com/nccgroup/TriforceLinuxSyscallFuzzer/tree/master/crash_reports/report_compatIpt

https://github.com/torvalds/linux/commit/ce683e5f9d045e5d67d1312a42b359cb2ab2a13c

https://h20566.www2.hpe.com/portal/site/hpsc/public/kb/docDisplay?docId=emr_na-c05347541

https://www.exploit-db.com/exploits/40435/

https://www.exploit-db.com/exploits/40489/

Vulnerability CVE-2016-4997

See advisories in our WLB2 database:

Med.

Linux Kernel 4.6.3 Netfilter Privilege Escalation

CWE-264

CVSS2 => (AV:L/AC:L/Au:N/C:C/I:C/A:C)

7.2/10

10/10

3.9/10

Local

Low

No required

Complete

Complete

Complete

Affected software

References: