Vulnerability CVE-2016-8655

Vulnerability CVE-2016-8655

Published: 2016-12-08

Description:

Race condition in net/packet/af_packet.c in the Linux kernel through 4.8.12 allows local users to gain privileges or cause a denial of service (use-after-free) by leveraging the CAP_NET_RAW capability to change a socket version, related to the packet_set_ring and packet_setsockopt functions.

See advisories in our WLB2 database:

	Topic	Author	Date
High	Linux Kernel 4.4.0 (Ubuntu 14.04/16.04 x86-64) AF_PACKET Race Condition Privilege Escalation	rebel	07.12.2016

Type:

CWE-416

(Use After Free)

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
Linux -> Linux kernel

References:

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=84ac7260236a49c79eede91617700174c2c19b0c

http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00044.html

http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00054.html

http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00055.html

http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00056.html

http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00067.html

http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00070.html

http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00073.html

http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00076.html

http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00077.html

http://lists.opensuse.org/opensuse-security-announce/2016-12/msg00087.html

http://packetstormsecurity.com/files/140063/Linux-Kernel-4.4.0-AF_PACKET-Race-Condition-Privilege-Escalation.html

http://rhn.redhat.com/errata/RHSA-2017-0386.html

http://rhn.redhat.com/errata/RHSA-2017-0387.html

http://rhn.redhat.com/errata/RHSA-2017-0402.html

http://www.openwall.com/lists/oss-security/2016/12/06/1

http://www.securityfocus.com/bid/94692

http://www.securitytracker.com/id/1037403

http://www.securitytracker.com/id/1037968

http://www.ubuntu.com/usn/USN-3149-1

http://www.ubuntu.com/usn/USN-3149-2

http://www.ubuntu.com/usn/USN-3150-1

http://www.ubuntu.com/usn/USN-3150-2

http://www.ubuntu.com/usn/USN-3151-1

http://www.ubuntu.com/usn/USN-3151-2

http://www.ubuntu.com/usn/USN-3151-3

http://www.ubuntu.com/usn/USN-3151-4

http://www.ubuntu.com/usn/USN-3152-1

http://www.ubuntu.com/usn/USN-3152-2

https://bugzilla.redhat.com/show_bug.cgi?id=1400019

https://github.com/torvalds/linux/commit/84ac7260236a49c79eede91617700174c2c19b0c

https://source.android.com/security/bulletin/2017-03-01.html

https://www.exploit-db.com/exploits/40871/

https://www.exploit-db.com/exploits/44696/

Vulnerability CVE-2016-8655

Race condition in net/packet/af_packet.c in the Linux kernel through 4.8.12 allows local users to gain privileges or cause a denial of service (use-after-free) by leveraging the CAP_NET_RAW capability to change a socket version, related to the packet_set_ring and packet_setsockopt functions.

See advisories in our WLB2 database:

High

Linux Kernel 4.4.0 (Ubuntu 14.04/16.04 x86-64) AF_PACKET Race Condition Privilege Escalation

CWE-416

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: