=========================================================================== SCO Security Bulletin 2000.01 Buffer Overflow Vulnerabilities in OpenServer pkg* tools --------------------------------------------------------------------------- Multiple Vulnerabilities Found In SCO OpenServer --------------------------------------------------------------------------- I. Description There was recently a report of a vulnerability in UnixWare7 that allowed acccess to read restricted files (/etc/shadow) via an exploit using crafted buffer overflows against some of the pkg* suite of tools. While OpenServer does not have exactly the same security vulnerability it does supply these tools and they are susceptible to the same set of buffer overflow issues. Files susceptible are /usr/bin/pkginfo /usr/bin/pkgparam /usr/bin/pkgchk /usr/bin/pkgadd /usr/bin/pkgrm /usr/adm/install/bin/pkginstall /usr/adm/install/bin/pkgremove II. Impact Possible exploits using buffer overflow of the above packaging utilities III. Releases OpenServer version 5.0.5. IV. Solution SCO is providing an interim patch to address this issue in the form of a System Security Enhancement (SSE) package. SSE055 contains replacement binaries for OpenServer5.0.5, and is available for Internet download via anonymous ftp and http. You can download the SSE package as follows: Anonymous ftp (World Wide Web URL): ftp://ftp.sco.COM/SSE/sse055.ltr (cover letter, ASCII text) ftp://ftp.sco.COM/SSE/sse055.tar.Z (new binaries, compressed tar file) Checksums (sum -r): 56781 4 sse055.ltr 53809 1489 sse055.tar.Z V. Updates This bulletin is available for anonymous ftp download from ftp://ftp.sco.COM/SSE/security_bulletins/SB-00.01a, and will be updated as new information becomes available. The latest information on security vulnerabilities and fixes from SCO is available on the world-wide web at http://www.sco.com/security/ VI. Further Information: If you have further questions, contact your support provider. If you need to contact SCO, please send electronic mail to support@sco.COM, or contact SCO as follows. USA/Canada: 6am-5pm Pacific Time (PST/PDT) ----------- 1-800-347-4381 (voice) 1-408-427-5443 (fax) Pacific Rim, Asia, and Latin American customers: 6am-5pm Pacific ------------------------------------------------ Time (PST/PDT) 1-408-425-4726 (voice) 1-408-427-5443 (fax) Europe, Middle East, Africa: 9am-5:30pm UK Time (GMT/BST) ---------------------------- +44 (0)1923 816344 (voice) +44 (0)1923 817781 (fax)