Linux Kernel PTraced Child Auto-Reap Local Denial of Service Vulnerability

BID:15625

Info

Linux Kernel PTraced Child Auto-Reap Local Denial of Service Vulnerability

Bugtraq ID: 15625
Class: Design Error
CVE: CVE-2005-3784
Remote: No
Local: Yes
Published: Nov 29 2005 12:00AM
Updated: Jan 09 2007 06:21PM
Credit: This issue was reported to the vendor by Oleg Nesterov.
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
Trustix Secure Linux 3.0
Trustix Secure Linux 2.2
Trustix Secure Enterprise Linux 2.0
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. Linux Professional 10.0 OSS
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 Professional 9.0 x86_64
S.u.S.E. Linux Professional 9.0
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 Personal 9.0 x86_64
S.u.S.E. Linux Personal 9.0
Redhat Fedora Core4
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
MandrakeSoft Multi Network Firewall 2.0
MandrakeSoft Corporate Server 3.0 x86_64
MandrakeSoft Corporate Server 3.0
Linux kernel 2.6.15 -rc2
Linux kernel 2.6.15 -rc1
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 .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
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
Debian Linux 3.1 sparc
Debian Linux 3.1 s/390
Debian Linux 3.1 ppc
Debian Linux 3.1 mipsel
Debian Linux 3.1 mips
Debian Linux 3.1 m68k
Debian Linux 3.1 ia-64
Debian Linux 3.1 ia-32
Debian Linux 3.1 hppa
Debian Linux 3.1 arm
Debian Linux 3.1 amd64
Debian Linux 3.1 alpha
Debian Linux 3.1
Not Vulnerable: Linux kernel 2.6.15 -rc3
Linux kernel 2.6.14 .3

Discussion

Linux Kernel PTraced Child Auto-Reap Local Denial of Service Vulnerability

Linux kernel is prone to a local denial-of-service vulnerability. The kernel improperly auto-reaps processes when they are being ptraced, leading to an invalid pointer. Further operations on this pointer result in a kernel crash.

This issue allows local users to crash the kernel, denying service to legitimate users.

A complete compromise of the affected computer has also been reported, but this has not been confirmed.

Kernel versions prior to 2.6.15 are vulnerable to this issue.

Exploit / POC

Linux Kernel PTraced Child Auto-Reap Local Denial of Service 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 PTraced Child Auto-Reap Local Denial of Service Vulnerability

Solution:
Please see the referenced vendor advisories for information on obtaining and applying the appropriate updates.

Linux kernel versions 2.6.15-rc3 and 2.6.14.3 have been released to address this issue.


Linux kernel 2.6 -test6

Linux kernel 2.6 -test4

Linux kernel 2.6 -test2

Linux kernel 2.6 -test11

Linux kernel 2.6 -test9-CVS

Linux kernel 2.6

Linux kernel 2.6 -test3

Linux kernel 2.6 .10

Linux kernel 2.6 -test5

Linux kernel 2.6 -test1

Linux kernel 2.6 -test7

Linux kernel 2.6 -test9

Linux kernel 2.6.1 -rc1

Linux kernel 2.6.1 -rc2

Linux kernel 2.6.10 rc2

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 2.6.11 .5

Linux kernel 2.6.11 -rc3

Linux kernel 2.6.12 .4

Linux kernel 2.6.12 .3

Linux kernel 2.6.12 .1

Linux kernel 2.6.12 .5

Linux kernel 2.6.12 -rc4

Linux kernel 2.6.12 .2

Linux kernel 2.6.12 -rc5

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 2.6.13 .2

Linux kernel 2.6.14 -rc2

Linux kernel 2.6.14 -rc3

Linux kernel 2.6.14

Linux kernel 2.6.14 -rc1

Linux kernel 2.6.14 -rc4

Linux kernel 2.6.14 .2

Linux kernel 2.6.15 -rc1

Linux kernel 2.6.15 -rc2

Linux kernel 2.6.2

Linux kernel 2.6.4

Linux kernel 2.6.7 rc1

Linux kernel 2.6.7

Linux kernel 2.6.8 rc3

Linux kernel 2.6.8 rc2

Linux kernel 2.6.8 rc1

References

Linux Kernel PTraced Child Auto-Reap Local Denial of Service Vulnerability

References:

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