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[Debian] Schwachstelle im Perl Modul Crypt::CBC - DSA 996-1
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Liebe Kolleginnen und Kollegen,
soeben erreichte uns nachfolgende Warnung des Debian-Teams. Wir geben
diese Informationen unveraendert an Sie weiter.
CAN-2006-0898 - Schwachstelle im Perl Modul Crypt::CBC
Bei der Verschluesselung von Daten durch das Perl Modul Crypt::CBC
unter Verwendung von RandomIV (Initialization Vector) Headern und dem
Rijndael Kryptoalgorithmus existiert eine Schwachstelle. Diese
Schwachstelle ermoeglicht einem entfernten Angreifern unter Umstaenden
einen erfolgreichen Angriff auf die verschluesselten Daten.
Betroffen sind die folgenden Software Pakete und Plattformen:
Paket libcrypt-cbc-perl in der stable Distribution (sarge) vor Version
2.12-1sarge1
Paket libcrypt-cbc-perl in der unstable Distribution (sid) vor Version
2.17-1
Stable Distribution (sarge)
Testing Distribution (sid)
Vom Hersteller werden ueberarbeitete Pakete zur Verfuegung gestellt.
Hersteller Advisory:
http://www.debian.org/security/2006/dsa-996
(c) der deutschen Zusammenfassung bei DFN-CERT Services GmbH; die
Verbreitung, auch auszugsweise, ist nur unter Hinweis auf den Urheber,
DFN-CERT Services GmbH, und nur zu nicht kommerziellen Zwecken
gestattet.
Mit freundlichen Gruessen,
Jan Kohlrausch
- --
Jan Kohlrausch (CSIRT), DFN-CERT Services GmbH
Web: https://www.dfn-cert.de/, Phone: +49-40-808077-555
PGP RSA/2048, A5DD03D1, A2 55 1C 51 0A 30 3E 78 5B 40 DA B7 14 F7 C9 E8
13.DFN-CERT Workshop "Sicherheit in vernetzten Systemen", 1./2.3.2006
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Debian Security Advisory DSA 996-1 security@debian.org
http://www.debian.org/security/ Martin Schulze
March 13th, 2006 http://www.debian.org/security/faq
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Package : libcrypt-cbc-perl
Vulnerability : programming error
Problem type : remote
Debian-specific: no
CVE ID : CVE-2006-0898
Lincoln Stein discovered that the Perl Crypt::CBC module produces weak
ciphertext when used with block encryption algorithms with blocksize >
8 bytes.
The old stable distribution (woody) does not contain a Crypt::CBC module.
For the stable distribution (sarge) this problem has been fixed in
version 2.12-1sarge1.
For the unstable distribution (sid) this problem has been fixed in
version 2.17-1.
We recommend that you upgrade your libcrypt-cbc-perl package.
Upgrade Instructions
- - --------------------
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 GNU/Linux 3.1 alias sarge
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Source archives:
http://security.debian.org/pool/updates/main/libc/libcrypt-cbc-perl/libcrypt-cbc-perl_2.12-1sarge1.dsc
Size/MD5 checksum: 631 a30dd4cde44e3a484b28ad8fc1b67e38
http://security.debian.org/pool/updates/main/libc/libcrypt-cbc-perl/libcrypt-cbc-perl_2.12-1sarge1.diff.gz
Size/MD5 checksum: 4165 8bb65642884ea281f83026f2d98c6146
http://security.debian.org/pool/updates/main/libc/libcrypt-cbc-perl/libcrypt-cbc-perl_2.12.orig.tar.gz
Size/MD5 checksum: 11036 27842b8ab627681b4a322610ea6184b5
Architecture independent components:
http://security.debian.org/pool/updates/main/libc/libcrypt-cbc-perl/libcrypt-cbc-perl_2.12-1sarge1_all.deb
Size/MD5 checksum: 18162 d625af2e10974eaafb007d538a90ebad
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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