BID:14205

Linux Kernel IA32 ExecVE Local Buffer Overflow Vulnerability

Info

Linux Kernel IA32 ExecVE Local Buffer Overflow Vulnerability

Bugtraq ID:	14205
Class:	Race Condition Error
CVE:	CVE-2005-1768
Remote:	No
Local:	Yes
Published:	Jul 11 2005 12:00AM
Updated:	Jul 12 2009 04:06PM
Credit:	Ilja van Sprundel is credited with the discovery of this vulnerability.
Vulnerable:	Trustix Secure Linux 3.0 Trustix Secure Linux 2.2 Trustix Secure Enterprise Linux 2.0 SmoothWall Express 2.0 SGI ProPack 3.0 SP6 SGI ProPack 3.0 SP5 SGI ProPack 3.0 SP4 SGI ProPack 3.0 SP3 SGI ProPack 3.0 SP2 SGI ProPack 3.0 SP1 SGI ProPack 3.0 S.u.S.E. Linux Professional 9.1 x86_64 S.u.S.E. Linux Professional 9.0 x86_64 S.u.S.E. Linux Professional 9.0 S.u.S.E. Linux Personal 9.1 x86_64 S.u.S.E. Linux Personal 9.0 x86_64 S.u.S.E. Linux Personal 9.0 Redhat Enterprise Linux WS 3 Redhat Enterprise Linux ES 3 Redhat Enterprise Linux AS 3 Redhat Desktop 3.0 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 Linux kernel 2.4.31 -pre1 Linux kernel 2.4.31 Linux kernel 2.4.30 rc3 Linux kernel 2.4.30 rc2 Linux kernel 2.4.30 + Trustix Secure Linux 2.2 + Trustix Secure Linux 2.1 Linux kernel 2.4.29 -rc2 Linux kernel 2.4.29 -rc1 Linux kernel 2.4.29 Linux kernel 2.4.28 Linux kernel 2.4.27 -pre5 Linux kernel 2.4.27 -pre4 Linux kernel 2.4.27 -pre3 Linux kernel 2.4.27 -pre2 Linux kernel 2.4.27 -pre1 Linux kernel 2.4.27 Linux kernel 2.4.26 Linux kernel 2.4.25 Linux kernel 2.4.24 -ow1 Linux kernel 2.4.24 Linux kernel 2.4.23 -pre9 Linux kernel 2.4.23 -ow2 Linux kernel 2.4.23 + Trustix Secure Linux 2.0 Linux kernel 2.4.22 + Devil-Linux Devil-Linux 1.0.5 + Devil-Linux Devil-Linux 1.0.4 + Mandriva Linux Mandrake 9.2 amd64 + Mandriva Linux Mandrake 9.2 + Redhat Fedora Core1 + Slackware Linux 9.1 Linux kernel 2.4.21 pre7 Linux kernel 2.4.21 pre4 + Mandriva Linux Mandrake 9.1 ppc + Mandriva Linux Mandrake 9.1 Linux kernel 2.4.21 pre1 Linux kernel 2.4.21 + Mandriva Linux Mandrake 9.1 ppc + Mandriva Linux Mandrake 9.1 + Redhat Desktop 3.0 + Redhat Enterprise Linux AS 3 + Redhat Enterprise Linux ES 3 + Redhat Enterprise Linux WS 3 + S.u.S.E. Linux Personal 9.0 x86_64 + S.u.S.E. Linux Personal 9.0 + SuSE SUSE Linux Enterprise Server 8 Linux kernel 2.4.20 + CRUX CRUX Linux 1.0 + Gentoo Linux 1.4 + Gentoo Linux 1.2 + Redhat Linux 9.0 i386 + Slackware Linux 9.0 + WOLK WOLK 4.4 s Linux kernel 2.4.19 -pre6 Linux kernel 2.4.19 -pre5 Linux kernel 2.4.19 -pre4 Linux kernel 2.4.19 -pre3 Linux kernel 2.4.19 -pre2 Linux kernel 2.4.19 -pre1 Linux kernel 2.4.19 Linux kernel 2.4.18 pre-8 Linux kernel 2.4.18 pre-7 Linux kernel 2.4.18 pre-6 Linux kernel 2.4.18 pre-5 Linux kernel 2.4.18 pre-4 Linux kernel 2.4.18 pre-3 Linux kernel 2.4.18 pre-2 Linux kernel 2.4.18 pre-1 Linux kernel 2.4.18 x86 Linux kernel 2.4.18 + Astaro Security Linux 2.0 23 + Astaro Security Linux 2.0 16 + Debian Linux 3.0 sparc + Debian Linux 3.0 s/390 + Debian Linux 3.0 ppc + Debian Linux 3.0 mipsel + Debian Linux 3.0 mips + Debian Linux 3.0 m68k + Debian Linux 3.0 ia-64 + Debian Linux 3.0 ia-32 + Debian Linux 3.0 hppa + Debian Linux 3.0 arm + Debian Linux 3.0 alpha + Mandriva Linux Mandrake 8.2 + Mandriva Linux Mandrake 8.1 + Mandriva Linux Mandrake 8.0 + Redhat Advanced Workstation for the Itanium Processor 2.1 IA64 + Redhat Advanced Workstation for the Itanium Processor 2.1 + Redhat Enterprise Linux AS 2.1 IA64 + Redhat Linux 8.0 + Redhat Linux 7.3 + S.u.S.E. Linux Connectivity Server + S.u.S.E. Linux Database Server 0 + S.u.S.E. Linux Firewall on CD + S.u.S.E. Linux Office Server + S.u.S.E. Linux Personal 8.2 + S.u.S.E. SuSE eMail Server 3.1 + S.u.S.E. SuSE eMail Server III + SuSE Linux 8.1 + SuSE Linux 8.0 + SuSE Linux 7.3 + SuSE Linux 7.2 + SuSE Linux 7.1 + SuSE Linux Openexchange Server + SuSE SUSE Linux Enterprise Server 8 + SuSE SUSE Linux Enterprise Server 7 + Turbolinux Turbolinux Server 8.0 + Turbolinux Turbolinux Server 7.0 + Turbolinux Turbolinux Workstation 8.0 + Turbolinux Turbolinux Workstation 7.0 Linux kernel 2.4.17 Linux kernel 2.4.16 Linux kernel 2.4.15 Linux kernel 2.4.14 Linux kernel 2.4.13 + Caldera OpenLinux Server 3.1.1 + Caldera OpenLinux Workstation 3.1.1 Linux kernel 2.4.12 Linux kernel 2.4.11 Linux kernel 2.4.10 + SuSE Linux 7.3 Linux kernel 2.4.9 Linux kernel 2.4.8 + Mandriva Linux Mandrake 8.2 + Mandriva Linux Mandrake 8.1 + Mandriva Linux Mandrake 8.0 Linux kernel 2.4.7 + Redhat Linux 7.2 + SuSE Linux 7.2 + SuSE Linux 7.1 Linux kernel 2.4.6 Linux kernel 2.4.5 + Slackware Linux 8.0 Linux kernel 2.4.4 Linux kernel 2.4.3 + Mandriva Linux Mandrake 8.0 ppc + Mandriva Linux Mandrake 8.0 Linux kernel 2.4.2 + Caldera OpenLinux Server 3.1 + Caldera OpenLinux Workstation 3.1 + Redhat Linux 7.1 i386 + Redhat Linux 7.1 alpha Linux kernel 2.4.1 Linux kernel 2.4 .0-test9 Linux kernel 2.4 .0-test8 Linux kernel 2.4 .0-test7 Linux kernel 2.4 .0-test6 Linux kernel 2.4 .0-test5 Linux kernel 2.4 .0-test4 Linux kernel 2.4 .0-test3 Linux kernel 2.4 .0-test2 Linux kernel 2.4 .0-test12 Linux kernel 2.4 .0-test11 Linux kernel 2.4 .0-test10 Linux kernel 2.4 .0-test1 Linux kernel 2.4 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 2.6.7 Linux kernel 2.4.32 -pre1

Discussion

Linux Kernel IA32 ExecVE Local Buffer Overflow Vulnerability

The Linux kernel is susceptible to a local buffer-overflow vulnerability. This issue is due to a race condition in an ia32 emulation system call that leads to a memory copy operation that overflows a previously allocated memory buffer.

During the time between two function calls to obtain buffer sizes, a window of opportunity exists for attackers to alter memory contents. This race condition allows local attackers to overwrite critical kernel memory, facilitating kernel-level machine code execution and privilege escalation.

On multiprocessor computers, attackers can directly alter the memory contents to exploit this race condition. On uniprocessor computers, a blocking function call allows attackers to exploit the race condition.

Versions of Linux 2.4 prior to 2.4.32-pre1, and Linux 2.4prior to 2.6.7 are susceptible to this issue.

This vulnerability affects only computers running on either the ia64 or the amd64 hardware platforms with ia32 emulation enabled.

Exploit / POC

Linux Kernel IA32 ExecVE Local Buffer Overflow Vulnerability

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

Solution / Fix

Linux Kernel IA32 ExecVE Local Buffer Overflow Vulnerability

Solution:
Version 2.4.32-pre1 or later of the 2.4 series, and 2.6.7 or later of the 2.6 series of the Linux kernel include a fix for this issue.

Note that the 2.4.32-pre1 version is not considered a stable, production-quality kernel. Users of kernel series 2.4 may have to wait until proper vendor fixes or until a stable version of the kernel is released.

Please see the referenced vendor advisories for further information.

Linux kernel 2.4 .0-test3