USN-405-1: fetchmail vulnerability

Publication date

11 January 2007

Overview

fetchmail vulnerability


Details

It was discovered that fetchmail did not correctly require TLS
negotiation in certain situations. This would result in a user's
unencrypted password being sent across the network.

If fetchmail has been configured to use the "sslproto tls1",
"sslcertck", or "sslfingerprint" options with a server that does not
correctly support TLS negotiation, this update may cause fetchmail to
(correctly) abort authentication.

It was discovered that fetchmail did not correctly require TLS
negotiation in certain situations. This would result in a user's
unencrypted password being sent across the network.

If fetchmail has been configured to use the "sslproto tls1",
"sslcertck", or "sslfingerprint" options with a server that does not
correctly support TLS negotiation, this update may cause fetchmail to
(correctly) abort authentication.

Update instructions

In general, a standard system upgrade is sufficient to effect the necessary changes.

Learn more about how to get the fixes.

The problem can be corrected by updating your system to the following package versions:

Ubuntu Release Package Version
6.10 edgy fetchmail –  6.3.4-1ubuntu4.1
6.06 dapper fetchmail –  6.3.2-2ubuntu2.1
5.10 breezy fetchmail –  6.2.5-13ubuntu3.3

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