Showing headlines posted by dave

The openssh source tarball openssh-3.4p1.tar.gz from the openbsd ftp server http://ftp.openbsd.org has been trojaned with code that opens network connections to a server in the internet (203.62.158.32:6667) at compile time. The backdoor does not have any influence on the runtime behaviour of the package to our current knowlege. As of now, the package on the openbsd ftp server has not been removed/cleaned.

The WWWOFFLE, World Wide Web Offline Explorer, program suite acts as a HTTP, FTP and Finger proxy to allow users with dial-up access to the internet to do offline WWW browsing.

A problem was found in gallery (a web-based photo album toolkit): it was possible to pass in the GALLERY_BASEDIR variable remotely. This made it possible to execute commands under the uid of web-server.

Several security updates are now available for Slackware 8.1, including updated packages for Apache, glibc, mod_ssl, openssh, openssl, and php.

This security announcement covers two different errors in packages used by and used with the apache package. The first bug is an off-by-one overflow in the code responsible for handling configuration directives in mod_ssl, the apache module that enables apache to serve SSL encrypted http protocol. This vulnerability allows a local attacker to use a specially prepared .htaccess file for a denial of service attack against a webserver child, resulting in an increased resource usage overhead on busy webservers, or possibly to execute arbitrary commands as the webserver user (wwwrun in the SuSE case). This bug has been discovered by Frank Denis. The second bug was found by Markus Meissner (while working for Caldera in 2001, now SuSE) and Sebastian Krahmer, SuSE Security, independently. It is a temporary file handling problem in libmm (package name is "mm"), a library for communication between forked processes using IPC semaphores, IPC shared memory and/or shared mmap()'ed files. The vulnerability allows a local attacker to gain root privileges once she has succeeded to gain the (local) privileges of the user wwwrun on the system running the apache webserver.

Updated mm packages are now available for Red Hat Linux 7, 7.1, 7.2, and 7.3. These updates address possible vulnerabilities in how the MM library opens temporary files.

Marcus Meissner and Sebastian Krahmer discovered and fixed a temporary file vulnerability in the mm shared memory library. This problem can be exploited to gain root access to a machine running Apache which is linked against this library, if shell access to the user ``www-data'' is already available (which could easily be triggered through PHP).

The openssl package provides encryption functions and is used by many applications on SuSE products.

The OpenSSL development team has announced that a security audit by A.L. Digital Ltd and The Bunker, under the DARPA CHATS program, has revealed remotely exploitable buffer overflow conditions in the OpenSSL code. Additionaly, the ASN1 parser in OpenSSL has a potential DoS attack independently discovered by Adi Stav and James Yonan.

Updated OpenSSL packages are available which fix several serious buffer overflow vulnerabilities.

A locally exploitable vulnerability is present in the util-linux package shipped with Red Hat Linux

Updated glibc packages are available to fix two vulnerabilities in the resolver functions.

Updated mod_ssl packages are now available for Red Hat Linux 7, 7.1, 7.2, and 7.3. These updates incorporate a fix for an incorrect bounds check in versions of mod_ssl up to and including version

A vulnerability has been discovered in some resolver library functions. The affected code goes back to the resolver library shipped as part of BIND4; code derived from it has been included in later BIND releases as well as the GNU libc.

squid is a web proxy cache contained but not installed and activated by default on SuSE products.

New Squid packages are available which fix various security issues.

SuSE Security has issued two warnings and one SuSE Security Announcement on 25th and 26th of June concerning the vulnerabilities found in the openssh package that is contained and installed by default on most SuSE products. For a few days, the nature of the errors were unknown to the public, making it difficult for distributors to provide proper solutions against the problem. Now that details of the errors have been disclosed, we hereby re-release SuSE Security Announcement SuSE-SA:2002:023 (openssh) under a new announcement ID with links to a set of update packages that represent SuSE's permanent fix for the problems found.

The libapache-mod-ssl package provides SSL capability to the apache webserver. Recently, a problem has been found in the handling of .htaccess files, allowing arbitrary code execution as the web server user (regardless of ExecCGI / suexec settings), DoS attacks (killing off apache children), and allowing someone to take control of apache child processes - all trough specially crafted .htaccess files. More information about this vulnerability can be found at

Updated openssh packages are now available for Red Hat Linux 7, 7.1, 7.2, and 7.3. These updates fix an input validation error in OpenSSH.

This advisory is an update to DSA-134-3: this advisory contains updated information that is relevant to all Debian installations of OpenSSH (the ssh package). DSA-134-4 supersedes previous versions of DSA-134.