Sendmail Milter Remote Denial Of Service Weakness

BID:14047

Info

Sendmail Milter Remote Denial Of Service Weakness

Bugtraq ID: 14047
Class: Configuration Error
CVE: CVE-2005-2070
Remote: Yes
Local: No
Published: Jun 23 2005 12:00AM
Updated: Jul 12 2009 04:06PM
Credit: Damian Menscher <[email protected]> reported this vulnerability.
Vulnerable: SuSE Linux Enterprise Server 9
Sendmail Consortium Sendmail 8.12.11
Sendmail Consortium Sendmail 8.12.10
+ Slackware Linux 9.0
+ Slackware Linux 8.1
+ Slackware Linux 8.1
+ Slackware Linux -current
 + Slackware Linux -current
 + Sun Solaris 9_x86
 + Sun Solaris 9
 + Sun Solaris 8_x86
 + Sun Solaris 8_sparc
 + Sun Solaris 7.0_x86
 + Sun Solaris 7.0
 Sendmail Consortium Sendmail 8.12.9
+ Slackware Linux 9.0
+ Slackware Linux 8.1
+ Slackware Linux -current
 Sendmail Consortium Sendmail 8.12.8
+ Redhat Linux 9.0 i386
 + Redhat Linux 8.0 i386
 + Yellow Dog Linux 3.0
Sendmail Consortium Sendmail 8.12.7
+ OpenPKG OpenPKG 1.2
+ Slackware Linux 8.1
+ SOTLinux SOTLinux 2003 Desktop
+ SOTLinux SOTLinux 2003 Server
Sendmail Consortium Sendmail 8.12.6
+ Apple Mac OS X 10.2.4
+ Conectiva Linux Enterprise Edition 1.0
+ FreeBSD FreeBSD 5.0
+ FreeBSD FreeBSD 4.7
+ MandrakeSoft Corporate Server 2.1
+ Mandriva Linux Mandrake 9.0
+ OpenBSD OpenBSD 3.2
 + SuSE Linux 8.1
Sendmail Consortium Sendmail 8.12.5
+ OpenBSD OpenBSD 3.2
 Sendmail Consortium Sendmail 8.12.4
+ OpenBSD OpenBSD 3.2
 + Slackware Linux 8.1
+ Slackware Linux -current
 Sendmail Consortium Sendmail 8.12.3
+ 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
 + Debian Linux 3.0
+ FreeBSD FreeBSD 4.6
+ SuSE Linux 8.0 i386
 + SuSE Linux 8.0
Sendmail Consortium Sendmail 8.12.2
+ Apple Mac OS X 10.2.3
+ Apple Mac OS X 10.2.2
+ Apple Mac OS X 10.2.1
+ Apple Mac OS X 10.2
+ Apple Mac OS X Server 10.2.3
+ Apple Mac OS X Server 10.2.2
+ Apple Mac OS X Server 10.2.1
+ Apple Mac OS X Server 10.2
+ OpenBSD OpenBSD 3.1
 Sendmail Consortium Sendmail 8.12.1
+ HP MPE/iX 7.5
+ HP MPE/iX 7.0
+ Mandriva Linux Mandrake 8.2 ppc
 + Mandriva Linux Mandrake 8.2
Sendmail Consortium Sendmail 8.12 beta7
Sendmail Consortium Sendmail 8.12 beta5
Sendmail Consortium Sendmail 8.12 beta16
Sendmail Consortium Sendmail 8.12 beta12
Sendmail Consortium Sendmail 8.12 beta10
Sendmail Consortium Sendmail 8.12 .0
Sendmail Consortium Sendmail 8.11.7
Sendmail Consortium Sendmail 8.11.6
+ Caldera OpenLinux Server 3.1.1
+ Caldera OpenLinux Server 3.1
+ Caldera OpenLinux Workstation 3.1.1
+ Caldera OpenLinux Workstation 3.1
+ FreeBSD FreeBSD 4.5 -RELEASE
 + FreeBSD FreeBSD 4.5
+ FreeBSD FreeBSD 4.4
+ Immunix Immunix OS 7.0
+ Mandriva Linux Mandrake 8.1 ia64
 + Mandriva Linux Mandrake 8.1
+ Mandriva Linux Mandrake 8.0 ppc
 + Mandriva Linux Mandrake 8.0
+ Redhat Linux 7.3 i386
 + Redhat Linux 7.2 ia64
 + Redhat Linux 7.2 i386
 + Redhat Linux 7.1 i386
 + Redhat Linux 7.0 i386
 + Redhat Linux 6.2 i386
 + Sun Cobalt RaQ 550
+ Sun Linux 5.0.3
+ Sun Linux 5.0
+ SuSE Linux 7.3 sparc
 + SuSE Linux 7.3 ppc
 + SuSE Linux 7.3 i386
 + SuSE Linux 7.3
Sendmail Consortium Sendmail 8.11.5
Sendmail Consortium Sendmail 8.11.4
- Slackware Linux 8.0
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
Sendmail Consortium Sendmail 8.9.3
+ Compaq Tru64 5.1 PK5 (BL19)
 + Compaq Tru64 5.0 a PK3 (BL17)
 + Debian Linux 2.2 sparc
 + Debian Linux 2.2 powerpc
 + Debian Linux 2.2 IA-32
 + Debian Linux 2.2 arm
 + Debian Linux 2.2 alpha
 + Debian Linux 2.2 68k
 + Debian Linux 2.2
+ IBM AIX 4.3.3
+ SGI IRIX 6.5.19
+ SGI IRIX 6.5.18 m
 + SGI IRIX 6.5.18 f
 + SGI IRIX 6.5.17 m
 + SGI IRIX 6.5.17 f
 + SGI IRIX 6.5.16 m
 + SGI IRIX 6.5.16 f
 + SGI IRIX 6.5.15 m
 + SGI IRIX 6.5.15 f
 + SGI IRIX 6.5.14 m
 + SGI IRIX 6.5.14 f
 + SGI IRIX 6.5.13 m
 + SGI IRIX 6.5.13 f
 + SGI IRIX 6.5.12 m
 + SGI IRIX 6.5.12 f
 + SGI IRIX 6.5.11 m
 + SGI IRIX 6.5.11 f
 + SGI IRIX 6.5.10 m
 + SGI IRIX 6.5.10 f
 + SGI IRIX 6.5.9 m
 + SGI IRIX 6.5.9 f
 + SGI IRIX 6.5.8 m
 + SGI IRIX 6.5.8 f
 + SGI IRIX 6.5.7 m
 + SGI IRIX 6.5.7 f
 Sendmail Consortium Sendmail 8.9.2
Sendmail Consortium Sendmail 8.9.1
Sendmail Consortium Sendmail 8.9 .0
Sendmail Consortium Sendmail 8.8.8
+ Compaq Tru64 4.0 g PK3 (BL17)
 + Compaq Tru64 4.0 f PK7 (BL18)
 + SGI IRIX 6.5.6
+ SGI IRIX 6.5.5
+ SGI IRIX 6.5.4
+ SGI IRIX 6.5.3
+ SGI IRIX 6.5.2
+ SGI IRIX 6.5.1
+ SGI IRIX 6.5
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 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
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:

Discussion

Sendmail Milter Remote Denial Of Service Weakness

Sendmail is susceptible to a remote denial of service weakness in its milter interface. This issue is due to overly long default timeouts configured for milters.

This issue is demonstrated with ClamAV versions prior to 0.86. Any other milter that utilizes similar operating methods as the older ClamAV milter will also expose this vulnerability in Sendmail.

Depending on the configuration of the milter interface, attackers may either exploit this issue to bypass milters, or to deny further email delivery on affected sites.

Exploit / POC

Sendmail Milter Remote Denial Of Service Weakness

An exploit is not required.

Solution / Fix

Sendmail Milter Remote Denial Of Service Weakness

Solution:
SuSE has released an advisory (SUSE-SA:2005:038) and fixes to address this issue. Please see the referenced advisory for further information.

Debian has released advisory DSA 737-1 to address various issues affecting clamav. Please see the referenced advisory for more information.

Conectiva Linux has released security announcement CLSA-2005:973 addressing this issue. Please see the referenced advisory for details on obtaining abd applying the appropriate updates.

Debian has released security advisory DSA 773-1 addressing several issues for their AMD64 port of the operating system. Please see the referenced advisory for further information.

Currently we are not aware of any vendor-supplied patches for this issue. If you feel we are in error or are aware of more recent information, please mail us at: [email protected] <mailto:[email protected]>.

References

Sendmail Milter Remote Denial Of Service Weakness

References:

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