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>> Fetchmail Messages Handling Remote Denial of Service Vulnerability

Title : Fetchmail Messages Handling Remote Denial of Service Vulnerability
VUPEN ID : VUPEN/ADV-2005-2996
CVE ID : CVE-2005-4348
CWE ID : VUPEN VNS Only
CVSS V2 : VUPEN VNS Only
Rated as : Low Risk 
Remotely Exploitable : Yes
Locally Exploitable : Yes
Release Date : 2005-12-19


Technical Description    Receive VUPEN Security alerts in a Text format  Receive VUPEN Security alerts in a PDF format  Receive VUPEN Security alerts in an XML format 

A vulnerability has been identified in Fetchmail, which may be exploited by remote attackers to cause a denial of service. This flaw is due to a null pointer dereference error when processing messages without headers, which could be exploited by attackers to crash a vulnerable application (configured for multidrop mode) via a malicious upstream mail server.

Affected Products

Fetchmail version 6.2.5.4 and prior
Fetchmail version 6.3.0 and prior

Solution

Upgrade to Fetchmail version 6.3.1 or 6.2.5.5 :
http://developer.berlios.de/project/showfiles.php?group_id=1824

References

http://www.vupen.com/english/advisories/2005/2996
http://fetchmail.berlios.de/fetchmail-SA-2005-03.txt

Credits

Vulnerability reported by Daniel Drake and Sunil Shetye

ChangeLog

2005-12-19 : Initial release

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