Input validation error in Linux kernel - CVE-2013-4270
Published: December 9, 2013 / Updated: August 10, 2020
Vulnerability identifier: #VU42248
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2013-4270
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a remote non-authenticated attacker to read and manipulate data.
The net_ctl_permissions function in net/sysctl_net.c in the Linux kernel before 3.11.5 does not properly determine uid and gid values, which allows local users to bypass intended /proc/sys/net restrictions via a crafted application.
How to mitigate CVE-2013-4270
Install update from vendor's website.
Sources
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=2433c8f094a008895e66f25bd1773cdb01c91d01
- http://rhn.redhat.com/errata/RHSA-2014-0100.html
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.11.5
- http://www.ubuntu.com/usn/USN-2049-1
- https://bugzilla.redhat.com/show_bug.cgi?id=1027752
- https://github.com/torvalds/linux/commit/2433c8f094a008895e66f25bd1773cdb01c91d01