79938 2002-10-03 17:27 /51 rader/ Daniel Ahlberg <aliz@gentoo.org> Importerad: 2002-10-03 17:27 av Brevbäraren Extern mottagare: bugtraq@securityfocus.com Mottagare: Bugtraq (import) <1760> Ärende: GLSA: gv ------------------------------------------------------------ -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 - - -------------------------------------------------------------------- GENTOO LINUX SECURITY ANNOUNCEMENT - - -------------------------------------------------------------------- PACKAGE :gv SUMMARY :Execution of Arbitrary Shell Commands DATE :2002-10-03 10:00 UTC - - -------------------------------------------------------------------- OVERVIEW GV can be tricked into executing arbitary shell commands. DETAIL When GV detects that the document is either a PDF file or a GZip compressed file, it executes some commands with the help of the system() function. Unfortunately, these commands contain the filename, which can be considered as untrusted user input. It is then possible to distribute a file (with a meticulously choosed filename, that can even seems innocent) that causes execution of arbitrary shell commands when it is read with GV. Read the original advisory at http://www.epita.fr/~bevand_m/asa/asa-0000 SOLUTION It is recommended that all Gentoo Linux users who are running app-text/gv-3.58-r1 and earlier update their systems as follows: emerge rsync emerge gv emerge clean - - -------------------------------------------------------------------- aliz@gentoo.org - GnuPG key is available at www.gentoo.org/~aliz - - -------------------------------------------------------------------- -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.0.7 (GNU/Linux) iD8DBQE9nBYTfT7nyhUpoZMRAs5iAKCQDEFd64NlXMqKZ7zs5BYCdbjQLACdFCV9 ANLj7Y54vnJdkfPxzuNmfuE= =0AGQ -----END PGP SIGNATURE----- (79938) /Daniel Ahlberg <aliz@gentoo.org>/(Ombruten) 80312 2002-10-07 23:45 /19 rader/ <juergen.daubert@t-online.de> Importerad: 2002-10-07 23:45 av Brevbäraren Extern mottagare: bugtraq@securityfocus.com Mottagare: Bugtraq (import) <1826> Ärende: Re: iDEFENSE Security Advisory 09.26.2002: Exploitable Buffer Overflow in gv ------------------------------------------------------------ In-Reply-To: <200209261744.g8QHiu4D031425@bilbo.localnet> > >Does not work for me: > >boris@reston-0491:~/convert$ gv -v >gv 3.5.8 (debian) >boris@reston-0491:~/convert$ gv gv-exploit.pdf >Segmentation fault >boris@reston-0491:~/convert$ ls -al /tmp/itworked >ls: /tmp/itworked: No such file or directory Sure, it works for the debian version of gv, but only, if you load the exploit from whithin the gui and not from the commandline. regards Jürgen (80312) / <juergen.daubert@t-online.de>/------------