(Slackware Issues Fix) Sendmail Ruleset Buffer Overflow Has Unspecified Impact
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SecurityTracker Alert ID: 1007744 |
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SecurityTracker URL: http://securitytracker.com/id/1007744
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CVE Reference:
CAN-2003-0681
(Links to External Site)
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Date: Sep 18 2003
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Impact:
Not specified
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Fix Available: Yes Vendor Confirmed: Yes
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Version(s): 8.12.9 and prior versions
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Description:
A buffer overflow vulnerability was reported in Sendmail in certain non-default configurations. The impact was not reported.
It is reported that if non-standard recipient (2), final (4), or mailer-specific envelope rulesets are enabled, a potential buffer overflow may occur. The overflow reportedly exists in the ruleset parsing process.
The default configuration is reported to be not vulnerable.
Timo Sirainen is credited with reporting this flaw.
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Impact:
The impact was not disclosed.
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Solution:
Slackware has released a fix.
Updated packages for Slackware 8.1:
ftp://ftp.slackware.com/pub/slackware/slackware-8.1/patches/packages/sendmail-8.12.10-i386-1.tgz
ftp://ftp.slackware.com/pub/slackware/slackware-8.1/patches/packages/sendmail-cf-8.12.10-noarch-1.tgz
Updated packages for Slackware 9.0:
ftp://ftp.slackware.com/pub/slackware/slackware-9.0/patches/packages/sendmail-8.12.10-i386-1.tgz
ftp://ftp.slackware.com/pub/slackware/slackware-9.0/patches/packages/sendmail-cf-8.12.10-noarch-1.tgz
Updated packages for Slackware -current:
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/n/sendmail-8.12.10-i486-1.tgz
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/n/sendmail-cf-8.12.10-noarch-1.tgz
The MD5 signatures are:
Slackware 8.1 packages:
c54d3aa8407689e6f3ee5b491f063750 sendmail-8.12.10-i386-1.tgz
3d823ecb0efb5f7d7175bc913b9071df sendmail-cf-8.12.10-noarch-1.tgz
Slackware 9.0 packages:
49215a19acf21555ccbf64f7c84aefe2 sendmail-8.12.10-i386-1.tgz
524df4f7a5a0d54458274aeefc0288bb sendmail-cf-8.12.10-noarch-1.tgz
Slackware -current packages:
c044dbbc9445db1e6f830aa370afdcea sendmail-8.12.10-i486-1.tgz
e9603e09aa8ffadf93cda54e5e3f8833 sendmail-cf-8.12.10-noarch-1.tgz
See the Source Message for the vendor's advisory containing directions on how to install the appropriate fix.
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Vendor URL: www.sendmail.org/8.12.10.html (Links to External Site)
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Cause:
Boundary error
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Underlying OS:
Linux (Slackware)
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Message History:
This archive entry is a follow-up to the message listed below.
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Source Message Contents
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Date: Wed, 17 Sep 2003 12:01:52 -0700 (PDT)
Subject: [slackware-security] Sendmail vulnerabilities fixed (SSA:2003-260-02)
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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
[slackware-security] Sendmail vulnerabilities fixed (SSA:2003-260-02)
The sendmail packages in Slackware 8.1, 9.0, and -current have been
patched to fix security problems. These issues seem to be remotely
exploitable, so all sites running sendmail should upgrade right away.
Sendmail's 8.12.10 announcement may be found here:
http://www.sendmail.org/8.12.10.html
Here are the details from the Slackware 9.0 ChangeLog:
+--------------------------+
Wed Sep 17 10:10:26 PDT 2003
patches/packages/sendmail-8.12.10-i386-1.tgz: Upgraded to sendmail-8.12.10.
This fixes security issues as noted in Sendmail's RELEASE_NOTES:
"SECURITY: Fix a buffer overflow in address parsing. Problem
detected by Michal Zalewski, patch from Todd C. Miller
of Courtesan Consulting.
Fix a potential buffer overflow in ruleset parsing. This problem
is not exploitable in the default sendmail configuration;
only if non-standard rulesets recipient (2), final (4), or
mailer-specific envelope recipients rulesets are used then a
problem may occur. Problem noted by Timo Sirainen."
We recommend that sites running Sendmail upgrade immediately.
(* Security fix *)
patches/packages/sendmail-cf-8.12.10-noarch-1.tgz: Upgraded to config files
for sendmail-8.12.10.
+--------------------------+
WHERE TO FIND THE NEW PACKAGES:
+-----------------------------+
Updated packages for Slackware 8.1:
ftp://ftp.slackware.com/pub/slackware/slackware-8.1/patches/packages/sendmail-8.12.10-i386-1.tgz
ftp://ftp.slackware.com/pub/slackware/slackware-8.1/patches/packages/sendmail-cf-8.12.10-noarch-1.tgz
Updated packages for Slackware 9.0:
ftp://ftp.slackware.com/pub/slackware/slackware-9.0/patches/packages/sendmail-8.12.10-i386-1.tgz
ftp://ftp.slackware.com/pub/slackware/slackware-9.0/patches/packages/sendmail-cf-8.12.10-noarch-1.tgz
Updated packages for Slackware -current:
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/n/sendmail-8.12.10-i486-1.tgz
ftp://ftp.slackware.com/pub/slackware/slackware-current/slackware/n/sendmail-cf-8.12.10-noarch-1.tgz
MD5 SIGNATURES:
+-------------+
Slackware 8.1 packages:
c54d3aa8407689e6f3ee5b491f063750 sendmail-8.12.10-i386-1.tgz
3d823ecb0efb5f7d7175bc913b9071df sendmail-cf-8.12.10-noarch-1.tgz
Slackware 9.0 packages:
49215a19acf21555ccbf64f7c84aefe2 sendmail-8.12.10-i386-1.tgz
524df4f7a5a0d54458274aeefc0288bb sendmail-cf-8.12.10-noarch-1.tgz
Slackware -current packages:
c044dbbc9445db1e6f830aa370afdcea sendmail-8.12.10-i486-1.tgz
e9603e09aa8ffadf93cda54e5e3f8833 sendmail-cf-8.12.10-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
+-----+
Slackware Linux Security Team
http://slackware.com/gpg-key
security@slackware.com
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