Red Hat Network has determined that the following advisory is applicable to
one or more of the systems you have registered:
Complete information about this errata can be found at the following location:
https://rhn.redhat.com/network/errat...s.pxt?eid=1222
Security Advisory - RHSA-2002:215-09
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Summary:
Updated fetchmail packages fix vulnerabilities
Updated fetchmail packages are available for Red Hat Linux 6.2, 7, 7.1,
7.2, 7.3, and 8.0 which close a remotely-exploitable vulnerability in
unpatched versions of fetchmail prior to 6.1.0.
Description:
Fetchmail is a remote mail retrieval and forwarding utility intended for
use over on-demand TCP/IP links such as SLIP and PPP connections. Two bugs
have been found in the header parsing code in versions of Fetchmail prior
to 6.1.0.
The first bug allows a remote attacker to crash Fetchmail by sending a
carefully crafted DNS packet. The second bug allows a remote attacker to
carefully craft an email in such a way that when it is parsed by Fetchmail
a heap overflow occurs, allowing remote arbitrary code execution.
Both of these bugs are only exploitable if Fetchmail is being used in
multidrop mode (using the "multiple-local-recipients" feature).
All users of Fetchmail are advised to upgrade to the errata packages
containing a backported fix which is not vulnerable to these issues.
References:
http://tuxedo.org/~esr/fetchmail/NEWS
http://security.e-matters.de/advisories/032002.html
http://www.kb.cert.org/vuls/id/738331
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Taking Action
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You may address the issues outlined in this advisory in two ways:
- select your server name by clicking on its name from the list
available at the following location, and then schedule an
errata update for it:
https://rhn.redhat.com/network/syste...ystem_list.pxt
- run the Update Agent on each affected server.
