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Security update for fetchmail

Knowledgebase

(Last modified: 03JUN2002)


solutions Security update for fetchmail SuSE Linux Maintenance Web (be9deecfd5a764b5c9696366ff460054)

Applies to

Product(s): SuSE Linux Admin-CD for Firewall
SuSE Linux Enterprise Server 7 for IBM zSeries
SuSE eMail Server III
SuSE Linux Enterprise Server 7 for IA32
SuSE Linux Enterprise Server 7 for IA64
SuSE Firewall Adminhost VPN
SuSE Linux Connectivity Server

Package: fetchmail
Release: 20020603
Obsoletes: none

Indications

Everyone using fetchmail should apply this patch.

Problem description

A malicious server is able to return a very high message count that leads to the allocation of an memory area that overlaps a portion of the stack. Subsequently, the server may be able to overwrite that stack area with executable code which will run under the user id of the user executing fetchmail. This security patch fixes this remotely exploitable bug.
Additionally, a bugfix has been applied to avoid fetchmail hanging when using SSL connections and the server drops the TCP connection unexpectedly.

Solution

Please install the updates provided at the location noted below.

Installation notes

This update is provided as an RPM package that can easily be installed onto a running system by using this command:
rpm -Uvh fetchmail.rpm

links to download packages

Download Source Packages

Download the source code of the patches for maintained products.


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