[OpenPKG-SA-2004.038] OpenPKG Security Advisory (zlib)

Type securityvulns
Reporter Securityvulns
Modified 2004-08-30T00:00:00



OpenPKG Security Advisory The OpenPKG Project http://www.openpkg.org/security.html http://www.openpkg.org openpkg-security@openpkg.org openpkg@openpkg.org OpenPKG-SA-2004.038 25-Aug-2004

Package: zlib Vulnerability: denial of service OpenPKG Specific: no

Affected Releases: Affected Packages: Corrected Packages: OpenPKG CURRENT <= zlib-1.2.1-20040207 >= zlib-1.2.1-20040825 <= ghostscript-8.14-20040816 >= ghostscript-8.14-20040825 <= openpkg-20040811-20040811 >= openpkg-20040825-20040825 OpenPKG 2.1 <= zlib-1.2.1-2.1.0 >= zlib-1.2.1-2.1.1 <= ghostscript-8.14-2.1.1 >= ghostscript-8.14-2.1.2 <= openpkg-2.1.1-2.1.1 >= openpkg-2.1.2-2.1.2 OpenPKG 2.0 <= zlib-1.2.1-2.0.0 >= zlib-1.2.1-2.0.1 <= ghostscript-8.13-2.0.3 >= ghostscript-8.13-2.0.4 <= openpkg-2.0.3-2.0.3 >= openpkg-2.0.4-2.0.4

Dependent Packages: abiword aegis aide analog apache apache2 autotrace blender bsdtar cadaver citadel clamav cups curl cvs cvsps cvsync dia doxygen emacs ethereal expat file firefox gd geoip gif2png gift-gnutella gift-openft gimp gmime gnome-vfs gnupg gnuplot htdig imagemagick ircd jitterbug kcd lbreakout lcms libarchive libwmf libxml lout lynx mixmaster mng mozilla mplayer mrtg mysql mysql3 mysql41 mysqlcc nagios neon netpbm opencdk openpkg openssh pdflib perl-comp perl-gd perl-tk pgpdump php php3 php5 png postgresql pstoedit python qt ripe-dbase rrdtool scribus sio subversion tardy tetex tiff tightvnc transfig ttmkfdir w3m webalizer wml wv xdelta xemacs xfig xmame xplanet xv zimg

Description: Triggered by a Debian bug report [1], a denial of service vulnerability was found in the ZLib compression library [0] versions 1.2.x (older versions are not affected). The problem arises from incorrect error handling in the inflate() and inflateBack() functions. The Common Vulnerabilities and Exposures (CVE) project assigned the id CAN-2004-0797 [2] to the problem.

Please check whether you are affected by running "<prefix>/bin/openpkg rpm -q zlib". If you have the "zlib" package installed and its version is affected (see above), we recommend that you immediately upgrade it (see Solution) and its dependent packages (see above) as well [3][4].

Solution: Select the updated source RPM appropriate for your OpenPKG release [5][6], fetch it from the OpenPKG FTP service [7][8] or a mirror location, verify its integrity [9], build a corresponding binary RPM from it [3] and update your OpenPKG installation by applying the binary RPM [4]. For the most recent release OpenPKG 2.1, perform the following operations to permanently fix the security problem (for other releases adjust accordingly).

$ ftp ftp.openpkg.org ftp> bin ftp> cd release/2.1/UPD ftp> get zlib-1.2.1-2.1.1.src.rpm ftp> bye $ <prefix>/bin/openpkg rpm -v --checksig zlib-1.2.1-2.1.1.src.rpm $ <prefix>/bin/openpkg rpm --rebuild zlib-1.2.1-2.1.1.src.rpm $ su - # <prefix>/bin/openpkg rpm -Fvh <prefix>/RPM/PKG/zlib-1.2.1-2.1.1.*.rpm

Additionally, rebuild and reinstall any other dependent packages (see above) already installed in your OpenPKG instance. Only updating the "zlib" package is NOT sufficient because of the statically linked old "libz.a" code residing in the executables of other dependent packages.

Due to transitive dependencies and because "zlib" is used by such many other libraries and programs, the convenient way to upgrade "zlib" and all affected packages is to use the "openpkg-tools" package:

$ su - # <prefix>/bin/openpkg build -Ua | sh

References: [0] http://www.gzip.org/zlib/ [1] http://bugs.debian.org/252253 [2] http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2004-0797 [3] http://www.openpkg.org/tutorial.html#regular-source [4] http://www.openpkg.org/tutorial.html#regular-binary [5] ftp://ftp.openpkg.org/release/2.1/UPD/zlib-1.2.1-2.1.1.src.rpm [6] ftp://ftp.openpkg.org/release/2.0/UPD/zlib-1.2.1-2.0.1.src.rpm [7] ftp://ftp.openpkg.org/release/2.1/UPD/ [8] ftp://ftp.openpkg.org/release/2.0/UPD/ [9] http://www.openpkg.org/security.html#signature

For security reasons, this advisory was digitally signed with the OpenPGP public key "OpenPKG <openpkg@openpkg.org>" (ID 63C4CB9F) of the OpenPKG project which you can retrieve from http://pgp.openpkg.org and hkp://pgp.openpkg.org. Follow the instructions on http://pgp.openpkg.org/ for details on how to verify the integrity of this advisory.

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