Fetchmail bounced message denial of service
| fetchmail-message-bounce-dos (24265) |  Low Risk |
Description:
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.
Platforms Affected:
- Eric S. Raymond, Fetchmail 6.3.0 - 6.3.2-rc2
Remedy:
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.
Consequences:
Denial of Service
References:
- Apple Security Update 2006-004, About Security Update 2006-004 at http://docs.info.apple.com/article.html?artnum=304063.
- Fetchmail Security Announcement fetchmail-SA-2006-01, fetchmail-SA-2006-01: crash when bouncing messages. at http://fetchmail.berlios.de/fetchmail-SA-2006-01.txt.
- 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
- VUPEN/ADV-2006-0300: Fetchmail Message Bouncing Remote Denial of Service Vulnerability
- VUPEN/ADV-2006-3101: Apple Mac OS X Multiple Remote Code Execution and Local Security Bypass Vulnerabilities
Reported:
Jan 22, 2006
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