Date: 5 Jan 2005 16:42:47 +0200
From: SecuriTeam <support@securiteam.com.>
To: [email protected]Subject: [UNIX] FTP Kioslave Command Injection
The following security advisory is sent to the securiteam mailing list, and can be found at the SecuriTeam web site: http://www.securiteam.com
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FTP Kioslave Command Injection
------------------------------------------------------------------------
SUMMARY
KDE applications which use the FTP kioslave, e.g. Konqueror, allow remote
attackers to execute arbitrary FTP commands via an ftp:// URL that
contains an URL-encoded newline ( %0a ) before the ftp command, which
causes the commands to be inserted into the resulting FTP session.
Due to similarities between the FTP and the SMTP protocol, this
vulnerability allows to misuse the FTP slave to connect to a SMTP server
and issue arbitrary commands, like sending an email.
DETAILS
Vulnerable Systems:
* All KDE releases up to including KDE 3.3.2
Proof of Concept:
A proof of concept exploit can be found in our previous article:
<http://www.securiteam.com/securitynews/6E00R2KC0C.html>; Browsers' FTP
Client can be Used to Send Mail.
Impact:
The FTP kioslave can be misused to execute any ftp command on the server
or be a vector for sending out unsolicited email.
Solution:
Source code patches have been made available which fix these
vulnerabilities. Contact your OS vendor / binary package provider for
information about how to obtain updated binary packages.
Patch:
Patch for KDE 3.2.3 is available from
<ftp://ftp.kde.org/pub/kde/security_patches>;
ftp://ftp.kde.org/pub/kde/security_patches:
a639b7b592f005e911c454a0a8c9c542 post-3.2.3-kdelibs-kioslave.patch
Patch for KDE 3.3.2 is available from
<ftp://ftp.kde.org/pub/kde/security_patches>;
ftp://ftp.kde.org/pub/kde/security_patches:
fe67157b26a8cdf5bcfa1898cdf3b154 post-3.3.2-kdelibs-kioslave.patch
Time line and credits:
26/12/2004 Public bug report filed against kio_ftp by Thiago Macieira
about being able to send email via kio_ftp CR/LF injection
26/12/2004 Patches developed by Thiago Macieira developed and applied to
CVS
01/01/2005 Advisory released
CVE Information:
<http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-1165>;
CAN-2004-1165
ADDITIONAL INFORMATION
The information has been provided by <mailto:mueller@kde.org.> Dirk
Mueller.
The original article can be found at:
<http://www.kde.org/info/security/advisory-20050101-1.txt>;
http://www.kde.org/info/security/advisory-20050101-1.txt
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