Sicherheit: Pufferüberläufe in exim (Fedora Core 3)
Aktuelle Meldungen Distributionen
Name: Pufferüberläufe in exim (Fedora Core 3)
ID: FEDORA-2005-001
Distribution: Fedora
Plattformen: Fedora Core 3
Datum: Fr, 7. Januar 2005, 12:00
Referenzen: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-0021
Applikationen: exim


Fedora Update Notification

Product : Fedora Core 3
Name : exim
Version : 4.43
Release : 1.FC3.1
Summary : The exim mail transfer agent
Description :
Exim is a mail transport agent (MTA) developed at the University of
Cambridge for use on Unix systems connected to the Internet. In style
it is similar to Smail 3, but its facilities are more extensive, and
in particular it has options for verifying incoming sender and
recipient addresses, for refusing mail from specified hosts, networks,
or senders, and for controlling mail relaying. Exim is in production
use at quite a few sites, some of which move hundreds of thousands of
messages per day.

Exiscan is compiled in to allow inbuilt scanning capability. See

Update Information:

This erratum fixes two relatively minor security issues which were discovered
in Exim in the last few weeks. The Common Vulnerabilities and Exposures
project (cve.mitre.org) has assigned the names CAN-2005-0021 and CAN-2005-0022
to these, respectively.

1. The function host_aton() can overflow a buffer if it is presented with an
illegal IPv6 address that has more than 8 components.

2. The second report described a buffer overflow in the function
spa_base64_to_bits(), which is part of the code for SPA authentication. This

code originated in the Samba project. The overflow can be exploited only if
you are using SPA authentication.

* Tue Jan 04 2005 David Woodhouse <dwmw2@redhat.com> 4.43-1.FC3.1

- Fix buffer overflows (CAN-2005-0021, CAN-2005-0022)
- Demonstrate SASL auth configuration in default config file
- Enable TLS and provide certificate if necessary
- Don't reject all GB2312 charset mail by default

This update can be downloaded from:

f4cafadca104a85ff5f31cbf5ca4c4f1 SRPMS/exim-4.43-1.FC3.1.src.rpm
3412f5b4cf40ad504dbaf2b7e2fffa62 x86_64/exim-4.43-1.FC3.1.x86_64.rpm
1446c41e65cfd6f15ae60b969ab3d20c x86_64/exim-mon-4.43-1.FC3.1.x86_64.rpm
e71be8446d9e4d250ca40a41c2d7b49a x86_64/exim-doc-4.43-1.FC3.1.x86_64.rpm
1d515c5be494e657333549f72f4621e2 x86_64/exim-sa-4.43-1.FC3.1.x86_64.rpm
7c2205113fe3285a76b797748845548b i386/exim-4.43-1.FC3.1.i386.rpm
8227e5701319639057b951bc45bbecf8 i386/exim-mon-4.43-1.FC3.1.i386.rpm
3b7e2741f4208757e92ab2d228b1fe8a i386/exim-doc-4.43-1.FC3.1.i386.rpm
4e5cbfea028184d6710443a3c0e79c29 i386/exim-sa-4.43-1.FC3.1.i386.rpm

This update can also be installed with the Update Agent; you can
launch the Update Agent with the 'up2date' command.

Updates for the PowerPC architecture are also available from the yum
repository at the following address:

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