Debian 10261 Published by

The Debian Security Team published a new security update for Debian GNU/Linux. Here the announcement:



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Debian Security Advisory DSA-1456-1 security@debian.org
http://www.debian.org/security/ Thijs Kinkhorst
January 09, 2008 http://www.debian.org/security/faq
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Package : fail2ban
Vulnerability : programming error
Problem-Type : remote
Debian-specific: no
CVE ID : CVE-2007-4321

Daniel B. Cid discovered that fail2ban, a tool to block IP addresses
that cause login failures, is too liberal about parsing SSH log files,
allowing an attacker to block any IP address.

For the unstable distribution (sid), this problem has been fixed in
version 0.8.0-4.

For the stable distribution (etch), this problem has been fixed in
version 0.7.5-2etch1.

The old stable distribution (sarge) doesn't contain fail2ban.

We recommend that you upgrade your fail2ban package.

Upgrade instructions
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wget url
will fetch the file for you
dpkg -i file.deb
will install the referenced file.

If you are using the apt-get package manager, use the line for
sources.list as given below:

apt-get update
will update the internal database
apt-get upgrade
will install corrected packages

You may use an automated update by adding the resources from the
footer to the proper configuration.


Debian 4.0 (stable)
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Stable updates are available for alpha, amd64, arm, hppa, i386, ia64, mips, mipsel, powerpc, s390 and sparc.

Source archives:

http://security.debian.org/pool/updates/main/f/fail2ban/fail2ban_0.7.5-2etch1.dsc
Size/MD5 checksum: 704 67efd3e859d89b4b2d2e527ff09ac659
http://security.debian.org/pool/updates/main/f/fail2ban/fail2ban_0.7.5-2etch1.diff.gz
Size/MD5 checksum: 21899 c1f185e48d340020de0651962fc34402
http://security.debian.org/pool/updates/main/f/fail2ban/fail2ban_0.7.5.orig.tar.gz
Size/MD5 checksum: 46075 36e65b8effcfd4f4a437d214613eb916

Architecture independent packages:

http://security.debian.org/pool/updates/main/f/fail2ban/fail2ban_0.7.5-2etch1_all.deb
Size/MD5 checksum: 63564 afb61355977afe99b2a807a6de03685f


These files will probably be moved into the stable distribution on
its next update.

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For apt-get: deb http://security.debian.org/ stable/updates main
For dpkg-ftp: ftp://security.debian.org/debian-security dists/stable/updates/main
Mailing list: debian-security-announce@lists.debian.org
Package info: `apt-cache show <pkg>' and http://packages.debian.org/<pkg>
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