Sendmail Unsafe Signal Handling Race Condition Vulnerability

BID:2794

Info

Sendmail Unsafe Signal Handling Race Condition Vulnerability

Bugtraq ID: 2794
Class: Atomicity Error
CVE:
Remote: Unknown
Local: Yes
Published: May 28 2001 12:00AM
Updated: May 28 2001 12:00AM
Credit: Reported to Bugtraq by Michal Zalewski <[email protected]> on May 28, 2001.
Vulnerable: Sendmail Consortium Sendmail 8.12 beta7
Sendmail Consortium Sendmail 8.11.3
- MandrakeSoft Corporate Server 1.0.1
- Mandriva Linux Mandrake 8.0
- Slackware Linux 7.1
+ SuSE Linux 7.2 i386
 + SuSE Linux 7.2
Sendmail Consortium Sendmail 8.11.2
+ Redhat Linux 7.1 ia64
 + Redhat Linux 7.1 i386
 + Redhat Linux 7.1 alpha
 + Redhat Linux 7.1
+ SuSE Linux 7.1 x86
 + SuSE Linux 7.1 sparc
 + SuSE Linux 7.1 ppc
 + SuSE Linux 7.1 alpha
 + SuSE Linux 7.1
Sendmail Consortium Sendmail 8.11.1
+ Caldera OpenLinux Server 3.1
+ Caldera OpenLinux Workstation 3.1
Sendmail Consortium Sendmail 8.11
+ Compaq Tru64 5.1 b
 + Compaq Tru64 5.1 a
 + Compaq Tru64 5.1
+ IBM AIX 5.2
 + IBM AIX 5.1
 - Mandriva Linux Mandrake 7.2
+ Redhat Linux 7.0 sparc
 + Redhat Linux 7.0 i386
 + Redhat Linux 7.0 alpha
 + Redhat Linux 7.0
+ SCO Open Server 5.0.6 a
 + SCO Open Server 5.0.6
+ SCO Open Server 5.0.5
+ SCO Open Server 5.0.4
- SuSE Linux 7.0 sparc
 - SuSE Linux 7.0 ppc
 - SuSE Linux 7.0 alpha
 - SuSE Linux 7.0
Sendmail Consortium Sendmail 8.10.2
+ Sun Cobalt Qube3 4000WG
+ Sun Cobalt RaQ 4
+ Sun Cobalt RaQ XTR
+ Sun Cobalt RaQ XTR 3500R
+ Sun Cobalt RaQ4 3001R
Sendmail Consortium Sendmail 8.10.1
Sendmail Consortium Sendmail 8.10
Not Vulnerable:

Discussion

Sendmail Unsafe Signal Handling Race Condition Vulnerability

Several methods of causing undesired or unexpected behaviour in programs that make use of non-atomic or non-reentrant operations in signal handling functions have recently been presented in a paper by Michal Zalewski.

Due to the implications of this paper, the Sendmail MTA has been found to be susceptible to several possible race condition vulnerabilities.

Solution / Fix

Sendmail Unsafe Signal Handling Race Condition Vulnerability

Solution:
Sendmail has released versions 8.11.4 and 8.12.0.Beta10, which have corrected these issues. Links to the source packages are available below:


Sendmail Consortium Sendmail 8.10

Sendmail Consortium Sendmail 8.10.1

Sendmail Consortium Sendmail 8.10.2

Sendmail Consortium Sendmail 8.11

Sendmail Consortium Sendmail 8.11.1

Sendmail Consortium Sendmail 8.11.2

Sendmail Consortium Sendmail 8.11.3

Sendmail Consortium Sendmail 8.12 beta7

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