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[Debian] Schwachstelle in IMP - DSA 229-2
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Liebe Kolleginnen und Kollegen,
soeben erreichte uns nachfolgende Warnung des Debian-Teams ueber
Sicherheitsprobleme in IMP. Wir geben diese Informationen unveraendert
an Sie weiter.
Das IMP Programm erlaubt es einem Angreifer, ueber entsprechend
formulierte URLS, SQL Code an die von IMP verwendete Datenbank
durchzureichen, ohne das vorher eine Authentifikation als Nutzer
stattfindet.
Die Gefahr ist abhaengig von der verwendeten Datenbank, bei PostgreSQL
koennen z.B. die Sessions anderer User uebernommen werden, oder
beliebige Dateien ueberschrieben werden, auf die der PostgreSQL User
Zugriff hat, was zu Ausfuehrung beliebigen von Shell-Kommandos (ueber
~/.psqlrc) mit den Privilegien des PostgreSQL Users fuehren kann.
Betroffen ist IMP vor Version 2.2.6-5.2 in der Distribution Debian
GNU/Linux 3.0 (woody) bzw vor Version 2.2.6-0.potato.5.2 in Debian
GNU/Linux 2.2 (potato). Ebenfalls betroffen ist die Unstable Version
(sid) mit IMP Versionen vor 2.2.6-8. Der Hersteller stellt Patches zur
Behebung der Sicherheitsluecken zur Verfuegung.
(c) der deutschen Zusammenfassung bei DFN-CERT GmbH; die Verbreitung,
auch auszugsweise, ist nur unter Hinweis auf den Urheber, DFN-CERT
GmbH, und nur zu nicht kommerziellen Zwecken gestattet.
Mit freundlichen Gruessen,
Klaus Moeller, DFN-CERT
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Debian Security Advisory DSA 229-2 security@xxxxxxxxxx
http://www.debian.org/security/ Martin Schulze
January 15th, 2003 http://www.debian.org/security/faq
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Package : imp
Vulnerability : SQL injection
Problem-Type : remote
Debian-specific: no
CVE Id : CAN-2003-0025
The advisory DSA 229-1 contained a typo in one file which could cause
certain installations to fail suddenly.
For completeness, here is the original advisory text:
Jouko Pynnonen discovered a probem with IMP, a web based IMAP mail
program. Using carefully crafted URLs a remote attacker is able to
inject SQL code into SQL queries without proper user authentication.
Even though results of SQL queries aren't directly readable from the
screen, an attacker might. update his mail signature to contain wanted
query results and then view it on the preferences page of IMP.
The impact of SQL injection depends heavily on the underlying database
and its configuration. If PostgreSQL is used, it's possible to
execute multiple complete SQL queries separated by semicolons. The
database contains session id's so the attacker might hijack sessions
of people currently logged in and read their mail. In the worst case,
if the hordemgr user has the required privilege to use the COPY SQL
command (found in PostgreSQL at least), a remote user may read or
write to any file the database user (postgres) can. The attacker may
then be able to run arbitrary shell commands by writing them to the
postgres user's ~/.psqlrc; they'd be run when the user starts the psql
command which under some configurations happens regularly from a cron
script.
For the current stable distribution (woody) this problem has been
fixed in version 2.2.6-5.2.
For the old stable distribution (potato) this problem has been
fixed in version 2.2.6-0.potato.5.2.
For the unstable distribution (sid) this problem will be fixed in
version 2.2.6-8.
We recommend that you upgrade your IMP packages.
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 GNU/Linux 2.2 alias potato
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Source archives:
http://security.debian.org/pool/updates/main/i/imp/imp_2.2.6-0.potato.5.2.dsc
Size/MD5 checksum: 557 44d08f19a1448314a6b909d72ccdc573
http://security.debian.org/pool/updates/main/i/imp/imp_2.2.6-0.potato.5.2.diff.gz
Size/MD5 checksum: 66875 c7d2431d975834000d08b86c7fe9df91
http://security.debian.org/pool/updates/main/i/imp/imp_2.2.6.orig.tar.gz
Size/MD5 checksum: 361731 8f7920c8173e1ef2724cb25a311f9ca8
Architecture independent components:
http://security.debian.org/pool/updates/main/i/imp/imp_2.2.6-0.potato.5.2_all.deb
Size/MD5 checksum: 410804 6aedc56344d1eea874c7ae39f3e536cd
Debian GNU/Linux 3.0 alias woody
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Source archives:
http://security.debian.org/pool/updates/main/i/imp/imp_2.2.6-5.2.dsc
Size/MD5 checksum: 638 d2504b9b549e73c448851d291821a5eb
http://security.debian.org/pool/updates/main/i/imp/imp_2.2.6-5.2.diff.gz
Size/MD5 checksum: 95209 2a18586731f2f3ae03353eb346eed8e4
http://security.debian.org/pool/updates/main/i/imp/imp_2.2.6.orig.tar.gz
Size/MD5 checksum: 361731 8f7920c8173e1ef2724cb25a311f9ca8
Architecture independent components:
http://security.debian.org/pool/updates/main/i/imp/imp_2.2.6-5.2_all.deb
Size/MD5 checksum: 426822 84d31910cec8dce85e00a89f5961307e
These files will probably be moved into the stable distribution on
its next revision.
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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@xxxxxxxxxxxxxxxx
Package info: `apt-cache show <pkg>' and http://packages.debian.org/<pkg>
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- --
Klaus Moeller | mailto:moeller@xxxxxxxxxxx
DFN-CERT GmbH | http://www.cert.dfn.de/team/moeller/
Heidenkampsweg 41 | Phone: +49(40)808077-555
D-20097 Hamburg | FAX: +49(40)808077-556
Germany | PGP-Key: RSA 2048 Bit ID: 0BB7C8F9
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