To: bugtraqat_private announceat_private security-alertsat_private ______________________________________________________________________________ SCO Security Advisory Subject: Linux: format string vulnerability in zlib (gzprintf) Advisory number: CSSA-2003-011.0 Issue date: 2003 March 10 Cross reference: ______________________________________________________________________________ 1. Problem Description There is a buffer overflow in the gzprintf function in zlib that can enable attackers to cause a denial of service or possibly execute arbitrary code. 2. Vulnerable Supported Versions System Package ---------------------------------------------------------------------- OpenLinux 3.1.1 Server prior to libz-1.1.4-2.i386.rpm prior to libz-devel-1.1.4-2.i386.rpm prior to libz-devel-static-1.1.4-2.i386.rpm OpenLinux 3.1.1 Workstation prior to libz-1.1.4-2.i386.rpm prior to libz-devel-1.1.4-2.i386.rpm prior to libz-devel-static-1.1.4-2.i386.rpm OpenLinux 3.1 Server prior to libz-1.1.4-2.i386.rpm prior to libz-devel-1.1.4-2.i386.rpm prior to libz-devel-static-1.1.4-2.i386.rpm OpenLinux 3.1 Workstation prior to libz-1.1.4-2.i386.rpm prior to libz-devel-1.1.4-2.i386.rpm prior to libz-devel-static-1.1.4-2.i386.rpm 3. Solution The proper solution is to install the latest packages. Many customers find it easier to use the Caldera System Updater, called cupdate (or kcupdate under the KDE environment), to update these packages rather than downloading and installing them by hand. 4. OpenLinux 3.1.1 Server 4.1 Package Location ftp://ftp.sco.com/pub/updates/OpenLinux/3.1.1/Server/CSSA-2003-011.0/RPMS 4.2 Packages 54e3d653907b2aa8111939d208b1f48b libz-1.1.4-2.i386.rpm 7b6103ac070899d33ddc18ec0152c8ad libz-devel-1.1.4-2.i386.rpm bf687e8997a2c7413f183cf0398a797c libz-devel-static-1.1.4-2.i386.rpm 4.3 Installation rpm -Fvh libz-1.1.4-2.i386.rpm rpm -Fvh libz-devel-1.1.4-2.i386.rpm rpm -Fvh libz-devel-static-1.1.4-2.i386.rpm 4.4 Source Package Location ftp://ftp.sco.com/pub/updates/OpenLinux/3.1.1/Server/CSSA-2003-011.0/SRPMS 4.5 Source Packages cb073eedd69f6503fdaaf7a12ed37c10 libz-1.1.4-2.src.rpm 5. OpenLinux 3.1.1 Workstation 5.1 Package Location ftp://ftp.sco.com/pub/updates/OpenLinux/3.1.1/Workstation/CSSA-2003-011.0/RPMS 5.2 Packages 80a08ebf1d968f880b8bfeb9a91d9288 libz-1.1.4-2.i386.rpm de1a572406aae392822c6b8fd9667c05 libz-devel-1.1.4-2.i386.rpm 80f2a2de435d10d2acd957cc07790cf9 libz-devel-static-1.1.4-2.i386.rpm 5.3 Installation rpm -Fvh libz-1.1.4-2.i386.rpm rpm -Fvh libz-devel-1.1.4-2.i386.rpm rpm -Fvh libz-devel-static-1.1.4-2.i386.rpm 5.4 Source Package Location ftp://ftp.sco.com/pub/updates/OpenLinux/3.1.1/Workstation/CSSA-2003-011.0/SRPMS 5.5 Source Packages dd564551f59c8675aec4cab15e6108dc libz-1.1.4-2.src.rpm 6. OpenLinux 3.1 Server 6.1 Package Location ftp://ftp.sco.com/pub/updates/OpenLinux/3.1/Server/CSSA-2003-011.0/RPMS 6.2 Packages 5cc16bd91015ce00f468e747a5fc8772 libz-1.1.4-2.i386.rpm 1d321ea1297616096fb5e1a3b72ec828 libz-devel-1.1.4-2.i386.rpm 021368dbf124ba856d46fb85f072b010 libz-devel-static-1.1.4-2.i386.rpm 6.3 Installation rpm -Fvh libz-1.1.4-2.i386.rpm rpm -Fvh libz-devel-1.1.4-2.i386.rpm rpm -Fvh libz-devel-static-1.1.4-2.i386.rpm 6.4 Source Package Location ftp://ftp.sco.com/pub/updates/OpenLinux/3.1/Server/CSSA-2003-011.0/SRPMS 6.5 Source Packages 9707abacf6336b2d5cb62529a0021d97 libz-1.1.4-2.src.rpm 7. OpenLinux 3.1 Workstation 7.1 Package Location ftp://ftp.sco.com/pub/updates/OpenLinux/3.1/Workstation/CSSA-2003-011.0/RPMS 7.2 Packages 303370a239df4fdff20a93ec885ef342 libz-1.1.4-2.i386.rpm ff34cf793e2c8c70627ecd29c271dcca libz-devel-1.1.4-2.i386.rpm eaef0a84c34dd17b2af72f9e235803da libz-devel-static-1.1.4-2.i386.rpm 7.3 Installation rpm -Fvh libz-1.1.4-2.i386.rpm rpm -Fvh libz-devel-1.1.4-2.i386.rpm rpm -Fvh libz-devel-static-1.1.4-2.i386.rpm 7.4 Source Package Location ftp://ftp.sco.com/pub/updates/OpenLinux/3.1/Workstation/CSSA-2003-011.0/SRPMS 7.5 Source Packages c0c9de8ce6e7d254a640b2a84e5d806d libz-1.1.4-2.src.rpm 8. References Specific references for this advisory: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0107 SCO security resources: http://www.sco.com/support/security/index.html This security fix closes SCO incidents sr875410, fz527488, erg712251. 9. Disclaimer SCO is not responsible for the misuse of any of the information we provide on this website and/or through our security advisories. Our advisories are a service to our customers intended to promote secure installation and use of SCO products. 10. Acknowledgements Richard Kettlewell <rjkat_private> discovered and researched this vulnerability. ______________________________________________________________________________
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