(Apple Issues Fix) Fetchmail Can Be Crashed By Remote Users Sending a Specially Crafted E-mail Message
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SecurityTracker Alert ID: 1008535 |
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SecurityTracker URL: http://securitytracker.com/id/1008535
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CVE Reference:
CAN-2003-0792
(Links to External Site)
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Updated: Feb 21 2004
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Original Entry Date: Dec 20 2003
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Impact:
Denial of service via network
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Fix Available: Yes Vendor Confirmed: Yes
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Version(s): 6.2.4
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Description:
A denial of service vulnerability was reported in fetchmail in the processing of long lines. A remote user can cause fetchmail to crash.
It is reported that a remote user can create a specially crafted email message to cause fetchmail to crash. Reports indicate that fetchmail does not properly allocate memory when processing long lines.
No further details were provided.
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Impact:
A remote user can cause fetchmail to crash.
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Solution:
Apple has released a fix for Jaguar. Security Update 2003-12-19 for Jaguar is available at:
* Software Update pane in System Preferences
* Apple's Software Downloads web site:
http://www.info.apple.com/kbnum/n120291
The download file is named: "SecurityUpd2003-12-19Jag.dmg"
Its SHA-1 digest is: b0c5d1ef54020db7580798fddd7a1e132e653896
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Vendor URL: catb.org/~esr/fetchmail/ (Links to External Site)
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Cause:
Exception handling error
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Underlying OS:
UNIX (OS X)
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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: Sat, 20 Dec 2003 07:52:58 -0800
Subject: APPLE-SA-2003-12-19 Security Update for Jaguar
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-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
APPLE-SA-2003-12-19 Security Update 2003-12-19 for Jaguar
Security Update 2003-12-19 for Jaguar is available for Mac OS X 10.2.8
and Mac OS X Server 10.2.8.
It contains security enhancements for the following:
AppleFileServer: Fixes CAN-2003-1007 to improve the handling of
malformed requests.
cd9660.util: Fixes CAN-2003-1006, a buffer overflow vulnerability in
the filesystem utility cd9660.util.
Credit to KF of Secure Network Operations for reporting this issue.
Directory Services: Fixes CAN-2003-1009. The default settings are
changed to prevent an inadvertent connection in the event of a
malicious DHCP server on the computer's local subnet. Further
information is provided in Apple's Knowledge Base article:
http://docs.info.apple.com/article.html?artnum=32478
Credit to William A. Carrel for reporting this issue.
fetchmail: Fixes CAN-2003-0792. Updates are provided to fetchmail that
improve its stability when receiving malformed messages.
fs_usage: Fixes CAN-2003-1010. The fs_usage tool has been improved to
prevent a local privilege escalation vulnerability. This tool is
used to collect system performance information and requires admin
privileges to run.
Credit to Dave G. of @stake for reporting this issue.
rsync: Fixes CAN-2003-0962 by improving the security of the rsync
server.
System initialization: Fixes CAN-2003-1011. The system initialization
process has been improved to restrict root access on a system that
uses a USB keyboard.
Note: The following fixes which appear in "Security Update 2003-12-19
for Panther" are not included in "Security Update 2003-12-19 for
Jaguar" since the Jaguar versions of Mac OS X and Mac OS X Server
are not vulnerable to these issues:
- CAN-2003-1005: ASN.1 Decoding for PKI
- CAN-2003-1008: Screen Saver text clippings
================================================
Security Update 2003-12-19 for Jaguar may be obtained from:
* Software Update pane in System Preferences
* Apple's Software Downloads web site:
http://www.info.apple.com/kbnum/n120291
The download file is named: "SecurityUpd2003-12-19Jag.dmg"
Its SHA-1 digest is: b0c5d1ef54020db7580798fddd7a1e132e653896
Information will also be posted to the Apple Product Security web
site:
http://www.apple.com/support/security/security_updates.html
This message is signed with Apple's Product Security PGP key, and
details are available at:
http://www.apple.com/support/security/security_pgp.html
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