Input validation error in Linux kernel - CVE-2011-2699
Published: May 25, 2012 / Updated: August 11, 2020
Vulnerability identifier: #VU44040
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/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-2011-2699
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 perform a denial of service (DoS) attack.
The IPv6 implementation in the Linux kernel before 3.1 does not generate Fragment Identification values separately for each destination, which makes it easier for remote attackers to cause a denial of service (disrupted networking) by predicting these values and sending crafted packets.
How to mitigate CVE-2011-2699
Install update from vendor's website.
Sources
- http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=87c48fa3b4630905f98268dde838ee43626a060c
- http://www.kernel.org/pub/linux/kernel/v3.x/ChangeLog-3.1
- http://www.mandriva.com/security/advisories?name=MDVSA-2013:150
- http://www.openwall.com/lists/oss-security/2011/07/20/5
- http://www.securitytracker.com/id?1027274
- https://bugzilla.redhat.com/show_bug.cgi?id=723429
- https://github.com/torvalds/linux/commit/87c48fa3b4630905f98268dde838ee43626a060c