Linux Kernel 'fasync_helper()' Local Privilege Escalation Vulnerability

BID:37806

Info

Linux Kernel 'fasync_helper()' Local Privilege Escalation Vulnerability

Bugtraq ID: 37806
Class: Design Error
CVE: CVE-2009-4141
Remote: No
Local: Yes
Published: Dec 16 2009 12:00AM
Updated: May 28 2010 10:50AM
Credit: Tavis Ormandy
Vulnerable: VMWare vMA 4.0 RHEL5
VMWare ESX Server 4.0 ESX400-201003405
VMWare ESX Server 4.0 ESX400-200912403
VMWare ESX Server 4.0 ESX400-200909401
VMWare ESX Server 4.0
Ubuntu Ubuntu Linux 9.10 sparc
Ubuntu Ubuntu Linux 9.10 powerpc
Ubuntu Ubuntu Linux 9.10 lpia
Ubuntu Ubuntu Linux 9.10 i386
Ubuntu Ubuntu Linux 9.10 amd64
Ubuntu Ubuntu Linux 9.04 sparc
Ubuntu Ubuntu Linux 9.04 powerpc
Ubuntu Ubuntu Linux 9.04 lpia
Ubuntu Ubuntu Linux 9.04 i386
Ubuntu Ubuntu Linux 9.04 amd64
Ubuntu Ubuntu Linux 8.10 sparc
Ubuntu Ubuntu Linux 8.10 powerpc
Ubuntu Ubuntu Linux 8.10 lpia
Ubuntu Ubuntu Linux 8.10 i386
Ubuntu Ubuntu Linux 8.10 amd64
Ubuntu Ubuntu Linux 8.04 LTS sparc
Ubuntu Ubuntu Linux 8.04 LTS powerpc
Ubuntu Ubuntu Linux 8.04 LTS lpia
Ubuntu Ubuntu Linux 8.04 LTS i386
Ubuntu Ubuntu Linux 8.04 LTS amd64
Ubuntu Ubuntu Linux 6.06 LTS sparc
Ubuntu Ubuntu Linux 6.06 LTS powerpc
Ubuntu Ubuntu Linux 6.06 LTS i386
Ubuntu Ubuntu Linux 6.06 LTS amd64
S.u.S.E. openSUSE 11.2
RedHat Enterprise MRG v1 for Red Hat Enterprise Linux version 5
RedHat Enterprise Linux 5.3.z server
Red Hat Fedora 11
Red Hat Enterprise Linux Desktop 5 client
Red Hat Enterprise Linux 5 Server
Linux kernel 2.6.32
Linux kernel 2.6.31 5
Linux kernel 2.6.31 .2
Linux kernel 2.6.31 .11
Linux kernel 2.6.31 -rc7
+ Trustix Secure Enterprise Linux 2.0
+ Trustix Secure Linux 2.2
+ Trustix Secure Linux 2.1
+ Trustix Secure Linux 2.0
Linux kernel 2.6.31 -rc6
+ Trustix Secure Enterprise Linux 2.0
+ Trustix Secure Linux 2.2
+ Trustix Secure Linux 2.1
+ Trustix Secure Linux 2.0
Linux kernel 2.6.31 -rc3
Linux kernel 2.6.31 -rc1
+ Trustix Secure Enterprise Linux 2.0
+ Trustix Secure Linux 2.2
+ Trustix Secure Linux 2.1
+ Trustix Secure Linux 2.0
Linux kernel 2.6.31
Linux kernel 2.6.30 .1
Linux kernel 2.6.30 -rc6
Linux kernel 2.6.30 -rc5
Linux kernel 2.6.30 -rc3
Linux kernel 2.6.30 -rc2
Linux kernel 2.6.30 -rc1
Linux kernel 2.6.30
Linux kernel 2.6.29 .4
Linux kernel 2.6.29 .1
Linux kernel 2.6.29 -git8
Linux kernel 2.6.29 -git14
Linux kernel 2.6.29 -git1
Linux kernel 2.6.29
Linux kernel 2.6.28 .9
Linux kernel 2.6.28 .8
Linux kernel 2.6.28 .6
Linux kernel 2.6.28 .5
Linux kernel 2.6.28 .3
Linux kernel 2.6.28 .2
Linux kernel 2.6.28 .1
Linux kernel 2.6.28 -rc7
Linux kernel 2.6.28 -rc5
Linux kernel 2.6.28 -rc1
Linux kernel 2.6.28 -git7
Linux kernel 2.6.28
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-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
Linux kernel 2.6.31.6
Linux kernel 2.6.31.4
Linux kernel 2.6.31.1
+ Trustix Secure Linux 2.0
Linux kernel 2.6.31-rc9
Linux kernel 2.6.31-rc8
Linux kernel 2.6.31-rc5-git3
Linux kernel 2.6.31-rc4
Linux kernel 2.6.31-rc2
Linux kernel 2.6.31-git11
+ Trustix Secure Enterprise Linux 2.0
+ Trustix Secure Linux 2.2
+ Trustix Secure Linux 2.1
+ Trustix Secure Linux 2.0
Linux kernel 2.6.30.5
Linux kernel 2.6.30.4
Linux kernel 2.6.30.3
Linux kernel 2.6.29-rc2-git1
Linux kernel 2.6.29-rc2
Linux kernel 2.6.29-rc1
Linux kernel 2.6.28.4
Linux kernel 2.6.28.10
Avaya Voice Portal 5.0
Avaya IQ 5
Avaya Aura System Platform 1.1
Avaya Aura System Manager 5.2
Avaya Aura SIP Enablement Services 5.2.1
Avaya Aura SIP Enablement Services 5.2
Avaya Aura Session Manager 5.2
Avaya Aura Session Manager 1.1
Avaya Aura Communication Manager 5.2
Avaya Aura Application Enablement Services 5.2
Not Vulnerable: VMWare ESX Server 4.0 ESX400-201005401

Discussion

Linux Kernel 'fasync_helper()' Local Privilege Escalation Vulnerability

Linux kernel is prone to a local privilege-escalation vulnerability.

Local attackers can exploit this issue to execute arbitrary code with kernel-level privileges.

Successful exploits will result in the complete compromise of affected computers.

The Linux Kernel 2.6.28 and later are vulnerable.

Exploit / POC

Linux Kernel 'fasync_helper()' Local Privilege Escalation Vulnerability

The following proof of concept is available:

Solution / Fix

Linux Kernel 'fasync_helper()' Local Privilege Escalation Vulnerability

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


Ubuntu Ubuntu Linux 9.10 sparc

Ubuntu Ubuntu Linux 8.04 LTS powerpc

Ubuntu Ubuntu Linux 8.10 powerpc

Ubuntu Ubuntu Linux 8.04 LTS sparc

Ubuntu Ubuntu Linux 9.10 powerpc

Ubuntu Ubuntu Linux 9.10 lpia

Ubuntu Ubuntu Linux 9.04 sparc

Ubuntu Ubuntu Linux 9.04 powerpc

Ubuntu Ubuntu Linux 9.04 i386

Ubuntu Ubuntu Linux 9.04 lpia

Ubuntu Ubuntu Linux 8.10 sparc

Ubuntu Ubuntu Linux 9.10 i386

Ubuntu Ubuntu Linux 9.10 amd64

Ubuntu Ubuntu Linux 9.04 amd64

Ubuntu Ubuntu Linux 8.10 amd64

Ubuntu Ubuntu Linux 8.10 i386

Ubuntu Ubuntu Linux 8.10 lpia

References

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