Linux Kernel Security Key Functions Local Copy_To_User Race Vulnerability

BID:17084

Info

Linux Kernel Security Key Functions Local Copy_To_User Race Vulnerability

Bugtraq ID: 17084
Class: Race Condition Error
CVE: CVE-2006-0457
Remote: No
Local: Yes
Published: Mar 13 2006 12:00AM
Updated: Dec 22 2006 03:52PM
Credit: David Howells <[email protected]> is credited with the discovery of this issue.
Vulnerable: Ubuntu Ubuntu Linux 5.10 powerpc
Ubuntu Ubuntu Linux 5.10 i386
Ubuntu Ubuntu Linux 5.10 amd64
Ubuntu Ubuntu Linux 5.0 4 powerpc
Ubuntu Ubuntu Linux 5.0 4 i386
Ubuntu Ubuntu Linux 5.0 4 amd64
Ubuntu Ubuntu Linux 4.1 ppc
Ubuntu Ubuntu Linux 4.1 ia64
Ubuntu Ubuntu Linux 4.1 ia32
SuSE SUSE Linux Enterprise Server 8
+ Linux kernel 2.4.21
+ Linux kernel 2.4.19
SuSE Linux Enterprise Server 9
SuSE Linux Desktop 1.0
S.u.S.E. UnitedLinux 1.0
S.u.S.E. Novell Linux Desktop 1.0
S.u.S.E. Linux Professional 10.0 OSS
S.u.S.E. Linux Professional 10.0
S.u.S.E. Linux Professional 9.3 x86_64
S.u.S.E. Linux Professional 9.3
S.u.S.E. Linux Professional 9.2 x86_64
S.u.S.E. Linux Professional 9.2
S.u.S.E. Linux Professional 9.1 x86_64
S.u.S.E. Linux Professional 9.1
S.u.S.E. Linux Personal 10.0 OSS
S.u.S.E. Linux Personal 9.3 x86_64
S.u.S.E. Linux Personal 9.3
S.u.S.E. Linux Personal 9.2 x86_64
S.u.S.E. Linux Personal 9.2
S.u.S.E. Linux Personal 9.1 x86_64
S.u.S.E. Linux Personal 9.1
S.u.S.E. Linux Enterprise Server for S/390 9.0
S.u.S.E. Linux Enterprise Server for S/390
Redhat Enterprise Linux WS 4
Redhat Enterprise Linux ES 4
Redhat Enterprise Linux AS 4
Redhat Desktop 4.0
Mandriva Linux Mandrake 2006.0 x86_64
Mandriva Linux Mandrake 2006.0
Linux kernel 2.6.15 .3
Linux kernel 2.6.15 .2
Linux kernel 2.6.15 .1
Linux kernel 2.6.15 -rc3
Linux kernel 2.6.15 -rc2
Linux kernel 2.6.15 -rc1
Linux kernel 2.6.15
Linux kernel 2.6.14 .5
Linux kernel 2.6.14 .4
Linux kernel 2.6.14 .3
Linux kernel 2.6.14 .2
Linux kernel 2.6.14 .1
Linux kernel 2.6.14 -rc4
Linux kernel 2.6.14 -rc3
Linux kernel 2.6.14 -rc2
Linux kernel 2.6.14 -rc1
Linux kernel 2.6.14
Linux kernel 2.6.13 .4
Linux kernel 2.6.13 .3
Linux kernel 2.6.13 .2
Linux kernel 2.6.13 .1
Linux kernel 2.6.13 -rc7
Linux kernel 2.6.13 -rc6
Linux kernel 2.6.13 -rc4
Linux kernel 2.6.13 -rc1
Linux kernel 2.6.13
Linux kernel 2.6.12 .6
Linux kernel 2.6.12 .5
Linux kernel 2.6.12 .4
Linux kernel 2.6.12 .3
Linux kernel 2.6.12 .2
Linux kernel 2.6.12 .1
Linux kernel 2.6.12 -rc5
Linux kernel 2.6.12 -rc4
Linux kernel 2.6.12 -rc1
Linux kernel 2.6.11 .8
Linux kernel 2.6.11 .7
Linux kernel 2.6.11 .6
Linux kernel 2.6.11 .5
Linux kernel 2.6.11 .12
Linux kernel 2.6.11 .11
Linux kernel 2.6.11 -rc4
Linux kernel 2.6.11 -rc3
Linux kernel 2.6.11 -rc2
Linux kernel 2.6.11
+ Redhat Fedora Core4
 Linux kernel 2.6.10 rc2
Linux kernel 2.6.10
+ Redhat Fedora Core3
 + Redhat Fedora Core2
 + Trustix Secure Linux 3.0
+ Ubuntu Ubuntu Linux 5.0 4 powerpc
 + Ubuntu Ubuntu Linux 5.0 4 i386
 + Ubuntu Ubuntu Linux 5.0 4 amd64
 Linux kernel 2.6.9
Linux kernel 2.6.8 rc3
Linux kernel 2.6.8 rc2
Linux kernel 2.6.8 rc1
+ Ubuntu Ubuntu Linux 4.1 ppc
 + Ubuntu Ubuntu Linux 4.1 ia64
 + Ubuntu Ubuntu Linux 4.1 ia32
 Linux kernel 2.6.8
Linux kernel 2.6.7 rc1
Linux kernel 2.6.7
Linux kernel 2.6.6 rc1
Linux kernel 2.6.6
Linux kernel 2.6.5
Linux kernel 2.6.4
Linux kernel 2.6.3
Linux kernel 2.6.2
Linux kernel 2.6.1 -rc2
Linux kernel 2.6.1 -rc1
Linux kernel 2.6.1
Linux kernel 2.6 .10
Linux kernel 2.6 -test9-CVS
Linux kernel 2.6 -test9
Linux kernel 2.6 -test8
Linux kernel 2.6 -test7
Linux kernel 2.6 -test6
Linux kernel 2.6 -test5
Linux kernel 2.6 -test4
Linux kernel 2.6 -test3
Linux kernel 2.6 -test2
Linux kernel 2.6 -test11
Linux kernel 2.6 -test10
Linux kernel 2.6 -test1
Linux kernel 2.6
Avaya S8710 R2.0.1
Avaya S8710 R2.0.0
Avaya S8710 CM 3.1
Avaya S8700 R2.0.1
Avaya S8700 R2.0.0
Avaya S8700 CM 3.1
Avaya S8500 R2.0.1
Avaya S8500 R2.0.0
Avaya S8500 CM 3.1
Avaya S8500 0
Avaya S8300 R2.0.1
Avaya S8300 R2.0.0
Avaya S8300 CM 3.1
Avaya S8300 0
Avaya Messaging Storage Server MM3.0
Avaya Converged Communications Server 2.0
Not Vulnerable: Linux kernel 2.6.15 .4

Discussion

Linux Kernel Security Key Functions Local Copy_To_User Race Vulnerability

The Linux kernel is susceptible to a local race-condition vulnerability in its security-key functionality. This issue is due to a race condition that allows attackers to modify an argument of a copy operation after is has been validated, but before it is used.

This vulnerability allows local attackers to crash the kernel, denying service to legitimate users. It may also allow attackers to read portions of kernel memory, and thus gain access to potentially sensitive information. This may aid them in further attacks.

Exploit / POC

Linux Kernel Security Key Functions Local Copy_To_User Race Vulnerability

Currently we are not aware of any exploits for this issue. If you feel we are in error or if you are aware of more recent information, please mail us at: [email protected]

Solution / Fix

Linux Kernel Security Key Functions Local Copy_To_User Race Vulnerability

Solution:
The Linux kernel version 2.6.15.4 has been released to address this issue.

Please see the referenced advisories for more information.


Linux kernel 2.6 -test6

Linux kernel 2.6 -test4

Linux kernel 2.6 -test2

Linux kernel 2.6 -test9-CVS

Linux kernel 2.6 -test7

Linux kernel 2.6 -test9

Linux kernel 2.6 -test10

Linux kernel 2.6 -test11

Linux kernel 2.6

Linux kernel 2.6.1 -rc2

Linux kernel 2.6.1

Linux kernel 2.6.10 rc2

Linux kernel 2.6.10

Linux kernel 2.6.11 -rc3

Linux kernel 2.6.11 .11

Linux kernel 2.6.11 .7

Linux kernel 2.6.11

Linux kernel 2.6.11 .6

Linux kernel 2.6.11 .12

Linux kernel 2.6.11 -rc2

Linux kernel 2.6.12 .4

Linux kernel 2.6.12 .1

Linux kernel 2.6.12 -rc4

Linux kernel 2.6.12 .2

Linux kernel 2.6.12 -rc1

Linux kernel 2.6.12 .3

Linux kernel 2.6.12 .5

Linux kernel 2.6.13 -rc4

Linux kernel 2.6.13 .3

Linux kernel 2.6.13

Linux kernel 2.6.13 -rc7

Linux kernel 2.6.13 -rc1

Linux kernel 2.6.14 .4

Linux kernel 2.6.14 .1

Linux kernel 2.6.14 .3

Linux kernel 2.6.14 -rc2

Linux kernel 2.6.14 .5

Linux kernel 2.6.14 -rc3

Linux kernel 2.6.15

Linux kernel 2.6.15 -rc1

Linux kernel 2.6.15 -rc3

Linux kernel 2.6.2

Linux kernel 2.6.3

Linux kernel 2.6.4

Linux kernel 2.6.6 rc1

Linux kernel 2.6.6

Linux kernel 2.6.7

Linux kernel 2.6.8 rc2

Linux kernel 2.6.8 rc1

Linux kernel 2.6.9

References

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