NULL pointer dereference in Linux kernel - CVE-2013-6431
Published: December 9, 2013 / Updated: August 10, 2020
Vulnerability identifier: #VU42243
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2013-6431
CWE-ID: CWE-476
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.
The vulnerability exists due to a NULL pointer dereference error in net/ipv6/ip6_fib.c in the Linux kernel before 3.11.5 does not properly implement error-code encoding, which allows local users to cause a denial of service (NULL pointer dereference and system crash) by leveraging the CAP_NET_ADMIN capability for an IPv6 SIOCADDRT ioctl call. A remote attacker can perform a denial of service (DoS) attack.
How to mitigate CVE-2013-6431
Cybersecurity Help is currently unaware of any official solution to address this vulnerability.
Sources
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=ae7b4e1f213aa659aedf9c6ecad0bf5f0476e1e2
- http://lists.opensuse.org/opensuse-security-announce/2014-02/msg00002.html
- http://rhn.redhat.com/errata/RHSA-2014-0100.html
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.11.5
- http://www.openwall.com/lists/oss-security/2013/12/06/5
- https://bugzilla.redhat.com/show_bug.cgi?id=1039054
- https://github.com/torvalds/linux/commit/ae7b4e1f213aa659aedf9c6ecad0bf5f0476e1e2