Fetchmail bounced message denial of service
|fetchmail-message-bounce-dos (24265)||Medium Risk|
Fetchmail is vulnerable to a denial of service attack, caused by the use of an invalid pointer when attempting to free memory after a message is bounced to the original sender or to the postmaster. A remote attacker could exploit this vulnerability to cause Fetchmail to crash.
Denial of Service
Upgrade to the latest version of Fetchmail (6.3.2 or later), as listed in Fetchmail Security Announcement fetchmail-SA-2006-01. See References.
For Apple Mac OS X:
Apply Apple Security Update 2006-004, available from the Apple Web site. See References.
For other distributions:
Contact your vendor for patch or upgrade information.
- Apple Security Update 2006-004: About Security Update 2006-004.
- Fetchmail Security Announcement fetchmail-SA-2006-01: fetchmail-SA-2006-01: crash when bouncing messages..
- BID-16365: Fetchmail Bounced Message Denial Of Service Vulnerability
- BID-19289: Apple Mac OS X Multiple Security Vulnerabilities
- CVE-2006-0321: fetchmail 6.3.0 and other versions before 6.3.2 allows remote attackers to cause a denial of service (crash) via crafted e-mail messages that cause a free of an invalid pointer when fetchmail bounces the message to the originator or local postmaster.
- OSVDB ID: 22691: Fetchmail Bounced Message DoS
- SA18571: Fetchmail Bounced Message Denial of Service Vulnerability
- SA21253: Mac OS X Security Update Fixes Multiple Vulnerabilities
- SECTRACK ID: 1015527: Fetchmail Invalid free() on Message Bounce Lets Remote Users Deny Service
- Eric S. Raymond Fetchmail 6.3.0 - 6.3.2 rc2
Jan 22, 2006
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The information within this database may change without notice. Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. In no event shall IBM be held liable for any damages whatsoever arising out of or in connection with the use or spread of this information.