Fetchmail SMTP warning message denial of service
| fetchmail-warning-dos (36385) |  Low Risk |
Description:
Fetchmail is vulnerable to a denial of service, caused by a NULL pointer dereference when refusing SMTP warning messages. A remote attacker on the adjacent network could exploit this vulnerability to cause the application to crash.
Platforms Affected:
- Apple, Mac OS X 10.4.11
- Apple, Mac OS X 10.5.6
- Apple, Mac OS X Server 10.4.11
- Apple, Mac OS X Server 10.5.6
- Canonical, Ubuntu 6.06 LTS
- Canonical, Ubuntu 6.10
- Canonical, Ubuntu 7.04
- Debian, Debian Linux 4.0
- Eric S. Raymond, Fetchmail prior to 6.3.9
- MandrakeSoft, Mandrake Linux 2007
- MandrakeSoft, Mandrake Linux 2007 X86_64
- MandrakeSoft, Mandrake Linux 2007.1 X86_64
- MandrakeSoft, Mandrake Linux 2007.1
- MandrakeSoft, Mandrake Linux 2008.0 X86_64
- MandrakeSoft, Mandrake Linux Corporate Server 3.0 X86_64
- MandrakeSoft, Mandrake Linux Corporate Server 3.0
- MandrakeSoft, Mandrake Linux Corporate Server 4.0 X86_64
- MandrakeSoft, Mandrake Linux Corporate Server 4.0
- SuSE, SuSE Linux
Remedy:
Refer to fetchmail-SA-2007-02 for patch, upgrade, or suggested workaround information. See References.
For Mandriva Linux (fetchmail):
Refer to MDKSA-2007:179 for patch, upgrade, or suggested workaround information. See References.
For Debian/GNU Linux (fetchmail):
Refer to DSA-1377-2 for patch, upgrade, or suggested workaround information. See References.
For Ubuntu Linux (fetchmail):
Refer to USN-520-1 for patch, upgrade, or suggested workaround information. See References.
For other distributions:
Apply the appropriate update for your system. See References.
Consequences:
Denial of Service
References:
- Apple Web site, About the security content of Security Update 2009-001 at http://support.apple.com/kb/HT3438.
- Fetchmail Web site, Fetchmail at http://fetchmail.berlios.de/index.html.
- fetchmail-SA-2007-02, Crash when a fetchmail-generated warning message is rejected at http://www.fetchmail.info/fetchmail-SA-2007-02.txt.
- BID-25495: Fetchmail Failed Warning Message Remote Denial of Service Vulnerability
- CVE-2007-4565: sink.c in fetchmail before 6.3.9 allows context-dependent attackers to cause a denial of service (NULL dereference and application crash) by refusing certain warning messages that are sent over SMTP.
- DSA-1377: fetchmail -- null pointer dereference
- MDKSA-2007:179: Updated fetchmail packages fix DoS vulnerability
- SA33937: Apple Mac OS X Security Update Fixes Multiple Vulnerabilities
- SECTRACK ID: 1018627: Fetchmail Warning Message Forwarding Bug Lets Users Deny Service
- SUSE-SR:2007:022: SUSE Security Summary Report
- USN-520-1: fetchmail vulnerabilities
- VUPEN/ADV-2007-3032: Fetchmail Warning Message Forwarding Remote Denial of Service Vulnerability
- VUPEN/ADV-2009-0422: Apple Mac OS X Code Execution and Security Bypass Vulnerabilities
Reported:
Aug 28, 2007
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