Linux ptrace/execve Race Condition Vulnerability

BID:2529

Info

Linux ptrace/execve Race Condition Vulnerability

Bugtraq ID: 2529
Class: Race Condition Error
CVE:
Remote: No
Local: Yes
Published: Mar 27 2001 12:00AM
Updated: Mar 27 2001 12:00AM
Credit: This vulnerability was announced to Bugtraq by Wojciech Purczynski <[email protected]> on March 27, 2001.
Vulnerable: Openwall patches 2.2.18 ow4
Linux kernel 2.2.18
+ Caldera OpenLinux 2.4
+ Debian Linux 2.2 sparc
 + Debian Linux 2.2 powerpc
 + Debian Linux 2.2 arm
 + Debian Linux 2.2 alpha
 + Debian Linux 2.2 68k
 + Debian Linux 2.2
+ Mandriva Linux Mandrake 7.2
+ Mandriva Linux Mandrake 7.1
+ Mandriva Linux Mandrake 7.0
+ Mandriva Linux Mandrake 6.1
+ Mandriva Linux Mandrake 6.0
+ Redhat Linux 7.0 sparc
 + Redhat Linux 7.0 i386
 + Redhat Linux 7.0 alpha
 + Redhat Linux 6.2 sparc
 + Redhat Linux 6.2 i386
 + Redhat Linux 6.2 alpha
 + Redhat Linux 6.1 sparc
 + Redhat Linux 6.1 i386
 + Redhat Linux 6.1 alpha
 + Redhat Linux 6.0 sparc
 + Redhat Linux 6.0 alpha
 + Redhat Linux 6.0
+ SCO eDesktop 2.4
+ SCO eServer 2.3.1
+ Slackware Linux 7.1
+ Slackware Linux 7.0
+ Slackware Linux 4.0
+ SuSE Linux 7.0
+ SuSE Linux 6.4 ppc
 + SuSE Linux 6.4 alpha
 + SuSE Linux 6.4
+ SuSE Linux 6.3 ppc
 + SuSE Linux 6.3 alpha
 + SuSE Linux 6.3
+ SuSE Linux 6.1 alpha
 + SuSE Linux 6.1
+ SuSE Linux 6.0
+ Wirex Immunix OS 7.0 -Beta
 + Wirex Immunix OS 7.0
+ Wirex Immunix OS 6.2
Linux kernel 2.2.17
+ Mandriva Linux Mandrake 7.2
+ SuSE Linux 7.0
+ Trustix Secure Linux 1.2
Linux kernel 2.2.16
+ Redhat Linux 7.0
+ Sun Cobalt Qube 3
+ Sun Cobalt RaQ XTR
+ Trustix Secure Linux 1.1
Linux kernel 2.2.15
+ MandrakeSoft Corporate Server 1.0.1
+ Mandriva Linux Mandrake 7.1
Linux kernel 2.2.14
+ Redhat Linux 6.2
 + SCO eDesktop 2.4
+ SCO eServer 2.3.1
+ Sun Cobalt RaQ 4
Linux kernel 2.2.10
+ Caldera OpenLinux 2.3
Not Vulnerable: Linux kernel 2.2.19
+ EnGarde Secure Linux 1.0.1
+ Immunix Immunix OS 7+
 + MandrakeSoft Single Network Firewall 7.2
+ Mandriva Linux Mandrake 8.1
+ Mandriva Linux Mandrake 8.0 ppc
 + Mandriva Linux Mandrake 8.0
+ SuSE Linux 7.0
+ SuSE Linux 6.4
+ SuSE Linux 6.3
+ Trustix Secure Linux 1.5

Discussion

Linux ptrace/execve Race Condition Vulnerability

The Linux kernel is the core of all distributions of the Linux Operating System. It was originally written by Linus Torvalds, and is maintained by a community of developers.

A problem in the Linux Kernel could make it possible for a local user to gain elevated privileges. A problem with the checking of process tracing on programs attempting to execute other programs that are setuid or setgid. It is possible to trace a process after it has entered a setuid or setgid execution state.

This makes it possible for a local user to change parts of the process as they function, and potentially gain elevated privileges.

Exploit / POC

Linux ptrace/execve Race Condition Vulnerability

x

Solution / Fix

Linux ptrace/execve Race Condition Vulnerability

Solution:
Upgrade available:


Linux kernel 2.2.10

Linux kernel 2.2.14

Linux kernel 2.2.15

Linux kernel 2.2.16

Linux kernel 2.2.17

Linux kernel 2.2.18

References

Linux ptrace/execve Race Condition Vulnerability

References:

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