CVE-2016-9755

HIGH
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

Description

The netfilter subsystem in the Linux kernel before 4.9 mishandles IPv6 reassembly, which allows local users to cause a denial of service (integer overflow, out-of-bounds write, and GPF) or possibly have unspecified other impact via a crafted application that makes socket, connect, and writev system calls, related to net/ipv6/netfilter/nf_conntrack_reasm.c and net/ipv6/netfilter/nf_defrag_ipv6_hooks.c.

References

http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=9b57da0630c9fd36ed7a20fc0f98dc82cc0777fa

http://www.openwall.com/lists/oss-security/2016/12/01/10

http://www.securityfocus.com/bid/94626

https://bugzilla.redhat.com/show_bug.cgi?id=1400904

https://github.com/torvalds/linux/commit/9b57da0630c9fd36ed7a20fc0f98dc82cc0777fa

https://groups.google.com/forum/#!topic/syzkaller/GFbGpX7nTEo

https://www.spinics.net/lists/netdev/msg407525.html

Details

Source: MITRE

Published: 2016-12-28

Updated: 2018-08-13

Type: CWE-787

Risk Information

CVSS v2

Base Score: 4.6

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

Impact Score: 6.4

Exploitability Score: 3.9

Severity: MEDIUM

CVSS v3

Base Score: 7.8

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

Impact Score: 5.9

Exploitability Score: 1.8

Severity: HIGH

Vulnerable Software

Configuration 1

OR

cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:* versions up to 4.8.15 (inclusive)

Tenable Plugins

View all (6 total)

IDNameProductFamilySeverity
124971EulerOS Virtualization for ARM 64 3.0.1.0 : kernel (EulerOS-SA-2019-1518)NessusHuawei Local Security Checks
high
101929Ubuntu 16.04 LTS : linux-hwe vulnerabilities (USN-3361-1)NessusUbuntu Local Security Checks
critical
101894Ubuntu 16.10 : linux, linux-raspi2 vulnerabilities (USN-3359-1)NessusUbuntu Local Security Checks
critical
95685Fedora 25 : kernel (2016-bbe98c341c)NessusFedora Local Security Checks
high
95680Fedora 23 : kernel (2016-9c17cb9648)NessusFedora Local Security Checks
high
95676Fedora 24 : kernel (2016-5ec2475e3f)NessusFedora Local Security Checks
high