From: Immunix Security Team (securitywirex.com)
Date: Mon Mar 31 2003 - 19:32:06 CST

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        Immunix Secured OS Security Advisory

Packages updated: sendmail
Affected products: ImmunixOS 6.2, 7.0, 7+
Bugs fixed: CAN-2003-0161
Date: Mon Mar 31 2003
Advisory ID: IMNX-2003-7+-002-01
Author: Seth Arnold <sarnoldwirex.com>
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Description:
  Michal Zalewski has discovered an integer signedness bug in sendmail's
  address handling code. A properly constructed email address could
  bypass length checks when writing to a fixed-length buffer. This bug
  may be remotely exploitable for root privileges.

  All buffers in the affected code are allocated on the stack, so
  StackGuard should prevent exploits of this vulnerability that involve
  modifying the function's return address. However, there may be other
  exploit paths not using function return addresses that StackGuard may
  not protect.

  We suggest upgrading when possible.

  References:
  http://www.securityfocus.com/archive/1/316760/2003-03-26/2003-04-01/0
  http://www.securityfocus.com/archive/1/316773/2003-03-26/2003-04-01/2

Package names and locations:
  Precompiled binary packages for Immunix 7+ are available at:
  http://download.immunix.org/ImmunixOS/7+/Updates/RPMS/sendmail-8.11.6-3_imnx_5.i386.rpm
  http://download.immunix.org/ImmunixOS/7+/Updates/RPMS/sendmail-cf-8.11.6-3_imnx_5.i386.rpm
  http://download.immunix.org/ImmunixOS/7+/Updates/RPMS/sendmail-doc-8.11.6-3_imnx_5.i386.rpm

Immunix OS 7+ md5sums:
  ce6fd9202049027bf8d0e152d2a8a7eb sendmail-8.11.6-3_imnx_5.i386.rpm
  55199fbef24c4739ee368af6d29f96c6 sendmail-cf-8.11.6-3_imnx_5.i386.rpm
  46b2011bba76da200e4b0625580ed9ad sendmail-doc-8.11.6-3_imnx_5.i386.rpm

GPG verification:
  Our public key is available at <http://wirex.com/security/GPG_KEY>.

NOTE:
  Ibiblio is graciously mirroring our updates, so if the links above are
  slow, please try:
    ftp://ftp.ibiblio.org/pub/Linux/distributions/immunix/
  or one of the many mirrors available at:
    http://www.ibiblio.org/pub/Linux/MIRRORS.html

  ImmunixOS 6.2 is no longer officially supported.
  ImmunixOS 7.0 is no longer officially supported.

Contact information:
  To report vulnerabilities, please contact securitywirex.com. WireX
  attempts to conform to the RFP vulnerability disclosure protocol
  <http://www.wiretrip.net/rfp/policy.html>.

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