Sendmail buffer overflow fixed (NEW)

2003-03-29T15:40:53
ID SSA-2003-0329154053
Type slackware
Reporter Slackware Linux Project
Modified 2003-03-29T15:40:53

Description

The sendmail packages in Slackware 8.0, 8.1, and 9.0 have been patched to fix a security problem. Note that this vulnerablity is NOT the same one that was announced on March 3rd and requires a new fix.

All sites running sendmail should upgrade.

More information on the problem can be found here:

http://www.sendmail.org/8.12.9.html

Here are the details from the Slackware 9.0 ChangeLog:

Sat Mar 29 13:46:36 PST 2003 patches/packages/sendmail-8.12.9-i386-1.tgz: Upgraded to sendmail-8.12.9. From sendmail's RELEASE_NOTES: 8.12.9/8.12.9 2003/03/29 SECURITY: Fix a buffer overflow in address parsing due to a char to int conversion problem which is potentially remotely exploitable. Problem found by Michal Zalewski. Note: an MTA that is not patched might be vulnerable to data that it receives from untrusted sources, which includes DNS. ( Security fix ) patches/packages/sendmail-cf-8.12.9-noarch-1.tgz: Updated config files for sendmail-8.12.9.

WHERE TO FIND THE NEW PACKAGES:

Updated packages for Slackware 8.0: ftp://ftp.slackware.com/pub/slackware/slackware-8.0/patches/packages/sendmail.tgz ftp://ftp.slackware.com/pub/slackware/slackware-8.0/patches/packages/smailcfg.tgz

Updated packages for Slackware 8.1: ftp://ftp.slackware.com/pub/slackware/slackware-8.1/patches/packages/sendmail-8.12.9-i386-1.tgz ftp://ftp.slackware.com/pub/slackware/slackware-8.1/patches/packages/sendmail-cf-8.12.9-noarch-1.tgz

Updated packages for Slackware 9.0: ftp://ftp.slackware.com/pub/slackware/slackware-9.0/patches/packages/sendmail-8.12.9-i386-1.tgz ftp://ftp.slackware.com/pub/slackware/slackware-9.0/patches/packages/sendmail-cf-8.12.9-noarch-1.tgz

MD5 SIGNATURES:

Here are the md5sums for the packages:

Slackware 8.0 packages: c29c3063313534bee8db13c5afcd1abc sendmail.tgz 1b3be9b45f0d078e1053b80069538ca7 smailcfg.tgz

Slackware 8.1 packages: b1b538ae7685ce8a09514b51f8802614 sendmail-8.12.9-i386-1.tgz 628b61a20f4529b514060620e5e601e7 sendmail-cf-8.12.9-noarch-1.tgz

Slackware 9.0 packages: 5f4f92f933961b6e652d294cd76da426 sendmail-8.12.9-i386-1.tgz 45b217e09d5ff2d0e1b7b12a389c86ec sendmail-cf-8.12.9-noarch-1.tgz

INSTALLATION INSTRUCTIONS:

First (as root), stop sendmail:

. /etc/rc.d/rc.sendmail stop

Next, upgrade the sendmail package(s) with upgradepkg:

upgradepkg sendmail-*.tgz

Finally, restart sendmail:

. /etc/rc.d/rc.sendmail start