RHSA-2002:294 - Security Advisory

Topic

Updated Fetchmail packages are available for Red Hat Linux Advanced Server
which close a remotely-exploitable vulnerability in unpatched versions of
Fetchmail prior to 6.2.0.

[Updated 06 Feb 2003]
Added fixed packages for Advanced Workstation

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. A bug
has been found in the header parsing code in versions of Fetchmail prior
to 6.2.0.

The bug allows a remote attacker to crash Fetchmail and potentially execute
arbitrary code by sending a carefully crafted email which is parsed by
Fetchmail.

All users of Fetchmail are advised to upgrade to the errata packages
containing a backported fix which corrects this issue.

Solution

Before applying this update, make sure all previously released errata
relevant to your system have been applied.

To update all RPMs for your particular architecture, run:

rpm -Fvh [filenames]

where [filenames] is a list of the RPMs you wish to upgrade. Only those
RPMs which are currently installed will be updated. Those RPMs which are
not installed but included in the list will not be updated. Note that you
can also use wildcards (*.rpm) if your current directory *only* contains the
desired RPMs.

Please note that this update is also available via Red Hat Network. Many
people find this an easier way to apply updates. To use Red Hat Network,
launch the Red Hat Update Agent with the following command:

up2date

This will start an interactive process that will result in the appropriate
RPMs being upgraded on your system.

Affected Products

• Red Hat Enterprise Linux Server 2 ia64
• Red Hat Enterprise Linux Workstation 2 ia64

Fixes

• BZ - 79562 - remotely-exploitable vulnerability

CVEs

• CVE-2002-1365

References

(none)