BID:17207

Retired: Sendmail SM_SysLog Remote Memory Leak Denial Of Service Vulnerability

Info

Retired: Sendmail SM_SysLog Remote Memory Leak Denial Of Service Vulnerability

Bugtraq ID:	17207
Class:	Design Error
CVE:
Remote:	Yes
Local:	No
Published:	Mar 23 2006 12:00AM
Updated:	Mar 27 2006 03:19AM
Credit:	Discovered by Ido Kanner.
Vulnerable:	Sendmail Consortium Sendmail 8.13.5 Sendmail Consortium Sendmail 8.13.3 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

Not Vulnerable:	Sendmail Consortium Sendmail 8.13.6

Discussion

Retired: Sendmail SM_SysLog Remote Memory Leak Denial Of Service Vulnerability

Sendmail is prone to a remote denial-of-service vulnerability. The application fails to properly free allocated memory regions when it is finished with them.

Remote attackers may leverage this issue to consume excessive memory, eventually crashing the application. This will deny further email service to legitimate users.

Sendmail versions prior to 8.13.6 are vulnerable to this issue.

** Update: Due to further analysis and details from the vendor, this BID is retired. Since the memory buffer that was documented as not being freed is a local variable, this is not a vulnerability.

Exploit / POC

Retired: Sendmail SM_SysLog Remote Memory Leak Denial Of Service Vulnerability

An attacker likely exploits this issue with an MTA or with network-scripting utilities.

Solution / Fix

Retired: Sendmail SM_SysLog Remote Memory Leak Denial Of Service Vulnerability

Solution:
The vendor has released version 8.13.6 to address this issue.

Sendmail Consortium Sendmail 8.10