Linux Kernel Headroom Check 'udp6_ufo_fragment()' Remote Denial of Service Vulnerability

BID:50751

Info

Linux Kernel Headroom Check 'udp6_ufo_fragment()' Remote Denial of Service Vulnerability

Bugtraq ID: 50751
Class: Design Error
CVE: CVE-2011-4326
Remote: Yes
Local: No
Published: Nov 21 2011 12:00AM
Updated: May 07 2015 05:12PM
Credit: Petr Matousek
Vulnerable: Ubuntu Ubuntu Linux 11.04 powerpc
Ubuntu Ubuntu Linux 11.04 i386
Ubuntu Ubuntu Linux 11.04 ARM
Ubuntu Ubuntu Linux 11.04 amd64
Ubuntu Ubuntu Linux 10.10 powerpc
Ubuntu Ubuntu Linux 10.10 i386
Ubuntu Ubuntu Linux 10.10 ARM
Ubuntu Ubuntu Linux 10.10 amd64
Ubuntu Ubuntu Linux 10.04 sparc
Ubuntu Ubuntu Linux 10.04 powerpc
Ubuntu Ubuntu Linux 10.04 i386
Ubuntu Ubuntu Linux 10.04 ARM
Ubuntu Ubuntu Linux 10.04 amd64
SuSE SUSE Linux Enterprise Server for VMware 11 SP1
+ Linux kernel 2.6.5
SuSE SUSE Linux Enterprise Server 11 SP1
SuSE SUSE Linux Enterprise Real Time 11 SP1
+ Linux kernel 2.6.5
SuSE SUSE Linux Enterprise High Availability Extension 11 SP1
SuSE SUSE Linux Enterprise Desktop 11 SP1
+ Linux kernel 2.6.5
Red Hat MRG Realtime for RHEL 6 Server 2
Red Hat Enterprise Linux Workstation 6
Red Hat Enterprise Linux Server 6
Red Hat Enterprise Linux HPC Node 6
Red Hat Enterprise Linux Desktop 6
Oracle Enterprise Linux 6
Oracle Enterprise Linux 5
OpenVZ Project OpenVZ 042stab039.10
OpenVZ Project OpenVZ 042stab037.1
OpenVZ Project OpenVZ 028stab095.1
OpenVZ Project OpenVZ 028stab092.2
OpenVZ Project OpenVZ 028stab091.1
OpenVZ Project OpenVZ 028stab089.1
OpenVZ Project OpenVZ 028stab085.2
OpenVZ Project OpenVZ 028stab081.1
OpenVZ Project OpenVZ 023stab054.1
OpenVZ Project OpenVZ 023stab053.2
Linux kernel 2.6.39 rc4
Linux kernel 2.6.39
Linux kernel 2.6.38
Linux kernel 2.6.37
Linux kernel 2.6.36
Linux kernel 2.6.35
Linux kernel 2.6.34
Linux kernel 2.6.33 .1
Linux kernel 2.6.33
Linux kernel 2.6.32 .9
Linux kernel 2.6.32
Linux kernel 2.6.7 rc3
Linux kernel 2.6.7 rc2
Linux kernel 2.6.7 rc1
Linux kernel 2.6.7
Linux kernel 2.6.7
Linux kernel 2.6.6 rc3
Linux kernel 2.6.6 rc2
Linux kernel 2.6.6 rc1
Linux kernel 2.6.6
Linux kernel 2.6.6
Linux kernel 2.6.5 rc3
Linux kernel 2.6.5 rc2
Linux kernel 2.6.5 rc1
Linux kernel 2.6.5
Linux kernel 2.6.4 rc3
Linux kernel 2.6.4 rc2
Linux kernel 2.6.4 rc1
Linux kernel 2.6.4
Linux kernel 2.6.4
Linux kernel 2.6.39-rc6
Linux kernel 2.6.39-rc3
Linux kernel 2.6.38.6
Linux kernel 2.6.38.4
Linux kernel 2.6.38.3
Linux kernel 2.6.38.2
Linux kernel 2.6.38-rc7
Linux kernel 2.6.38-rc4
Linux kernel 2.6.38-rc2
Linux kernel 2.6.38-git18
Linux kernel 2.6.37rc
Linux kernel 2.6.37.2
Linux kernel 2.6.37-rc7
Linux kernel 2.6.37-rc2
Linux kernel 2.6.37-rc1
Linux kernel 2.6.36.2 (stable)
Linux kernel 2.6.36-rc8
Linux kernel 2.6.36-rc6
Linux kernel 2.6.36-rc5
Linux kernel 2.6.36-rc4
Linux kernel 2.6.36-rc1
Linux kernel 2.6.35.5
Linux kernel 2.6.35.4
Linux kernel 2.6.35.1
Linux kernel 2.6.35-rc6
Linux kernel 2.6.35-rc5-git5
Linux kernel 2.6.35-rc5
Linux kernel 2.6.35-rc4
Linux kernel 2.6.35-rc1
Linux kernel 2.6.34.3
Linux kernel 2.6.34.2
Linux kernel 2.6.34.1
Linux kernel 2.6.34-rc6
Linux kernel 2.6.34-rc5
Linux kernel 2.6.34-rc4
Linux kernel 2.6.34-rc2-git1
Linux kernel 2.6.34-rc2
Linux kernel 2.6.34-rc1
Linux kernel 2.6.33.7
Linux kernel 2.6.33-rc8
Linux kernel 2.6.33-rc7
Linux kernel 2.6.33-rc7
Linux kernel 2.6.33-rc6-git5
Linux kernel 2.6.33-rc6
Linux kernel 2.6.33-rc5
+ Trustix Secure Enterprise Linux 2.0
+ Trustix Secure Linux 2.2
+ Trustix Secure Linux 2.1
+ Trustix Secure Linux 2.0
Linux kernel 2.6.33-rc4
+ Trustix Secure Enterprise Linux 2.0
+ Trustix Secure Linux 2.2
+ Trustix Secure Linux 2.1
+ Trustix Secure Linux 2.0
Linux kernel 2.6.32.8
Linux kernel 2.6.32.7
Linux kernel 2.6.32.6
Linux kernel 2.6.32.5
Linux kernel 2.6.32.4
Linux kernel 2.6.32.3
Linux kernel 2.6.32.28
Linux kernel 2.6.32.22
Linux kernel 2.6.32.2
Linux kernel 2.6.32.18
Linux kernel 2.6.32.17
Linux kernel 2.6.32.16
Linux kernel 2.6.32.15
Linux kernel 2.6.32.14
Linux kernel 2.6.32.13
Linux kernel 2.6.32.12
Linux kernel 2.6.32.11
Linux kernel 2.6.32.10
Linux kernel 2.6.32.1
Linux kernel 2.6.32-rc8
Linux kernel 2.6.32-rc7
Linux kernel 2.6.32-rc5
+ Trustix Secure Enterprise Linux 2.0
+ Trustix Secure Linux 2.2
+ Trustix Secure Linux 2.1
+ Trustix Secure Linux 2.0
Linux kernel 2.6.32-rc4
Linux kernel 2.6.32-rc3
Linux kernel 2.6.32-rc2
Linux kernel 2.6.32-rc1
Avaya 96x1 IP Deskphone 6
Not Vulnerable: OpenVZ Project OpenVZ 042stab044.11

Discussion

Linux Kernel Headroom Check 'udp6_ufo_fragment()' Remote Denial of Service Vulnerability

The Linux kernel is prone to a remote denial-of-service vulnerability that affects the headroom check.

Attackers can exploit this issue to cause a kernel crash, denying service to legitimate users.

Exploit / POC

Linux Kernel Headroom Check 'udp6_ufo_fragment()' Remote Denial of Service Vulnerability

To exploit this issue, attackers can use readily available network utilities.

Solution / Fix

Linux Kernel Headroom Check 'udp6_ufo_fragment()' Remote Denial of Service Vulnerability

Solution:
Updates are available. Please see the references for more information.

References

Linux Kernel Headroom Check 'udp6_ufo_fragment()' Remote Denial of Service Vulnerability

References:
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