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Message-ID: <20050727182956.A9209@caldera.com> Date: Thu Jul 28 02:27:56 2005 From: please_reply_to_security at sco.com (please_reply_to_security@....com) Subject: UnixWare 7.1.4 UnixWare 7.1.3 UnixWare 7.1.1 : RPCBind updated to prevent remote Denial of Service attack -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ______________________________________________________________________________ SCO Security Advisory Subject: UnixWare 7.1.4 UnixWare 7.1.3 UnixWare 7.1.1 : RPCBind updated to prevent remote Denial of Service attack Advisory number: SCOSA-2005.31 Issue date: 2005 July 27 Cross reference: sr894043 fz532477 erg712862 CAN-CAN-2005-2132 ______________________________________________________________________________ 1. Problem Description While testing UnixWare 7.x against CVE CAN-2001-1124, Yun Jonglim noticed that UnixWare rpcbind exhibits unexpected behaviour after successive attacks. When the UnixWare 7.x version of the RPC portmapper(rpcbind) receives an invalid portmap request from a remote (or local) host, it falls into a denial of service state and cannot respond. As a result, the RPC services will not operate normally. The Common Vulnerabilities and Exposures project (cve.mitre.org) has assigned the following names for these issues: CAN-CAN-2005-2132. 2. Vulnerable Supported Versions System Binaries ---------------------------------------------------------------------- UnixWare 7.1.4 mp2 /usr/lib/tmp/libnsl.so UnixWare 7.1.3 mp5 /usr/lib/tmp/libnsl.so UnixWare 7.1.1 m5 /usr/lib/tmp/libnsl.so 3. Solution The proper solution is to install the latest packages. 4. UnixWare 7.1.4 4.1 Location of Fixed Binaries ftp://ftp.sco.com/pub/updates/UnixWare/SCOSA-2005.31 4.2 Verification MD5 (erg712862.714.pkg.Z) = 4c32902492be86b35f9daaa544a71187 md5 is available for download from ftp://ftp.sco.com/pub/security/tools 4.3 Installing Fixed Binaries Upgrade the affected binaries with the following sequence: Download erg712862.714.pkg.Z to the /var/spool/pkg directory # uncompress /var/spool/pkg/erg712862.714.pkg.Z # pkgadd -d /var/spool/pkg/erg712862.714.pkg 5. UnixWare 7.1.3 5.1 Location of Fixed Binaries ftp://ftp.sco.com/pub/updates/UnixWare/SCOSA-2005.31 5.2 Verification MD5 (erg712862.713.pkg.Z) = 63ed84f84943604a992a1a555ad393f1 md5 is available for download from ftp://ftp.sco.com/pub/security/tools 5.3 Installing Fixed Binaries Upgrade the affected binaries with the following sequence: Download erg712862.713.pkg.Z to the /var/spool/pkg directory # uncompress /var/spool/pkg/erg712862.713.pkg.Z # pkgadd -d /var/spool/pkg/erg712862.713.pkg 6. UnixWare 7.1.1 6.1 Location of Fixed Binaries ftp://ftp.sco.com/pub/updates/UnixWare/SCOSA-2005.31 6.2 Verification MD5 (erg712862.711.pkg.Z) = 4ca1b39e940c2bbff8510027951efe5b md5 is available for download from ftp://ftp.sco.com/pub/security/tools 6.3 Installing Fixed Binaries Upgrade the affected binaries with the following sequence: Download erg712862.711.pkg.Z to the /var/spool/pkg directory # uncompress /var/spool/pkg/erg712862.711.pkg.Z # pkgadd -d /var/spool/pkg/erg712862.711.pkg 7. References Specific references for this advisory: http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-CAN-2005-2132 SCO security resources: http://www.sco.com/support/security/index.html SCO security advisories via email http://www.sco.com/support/forums/security.html This security fix closes SCO incidents sr894043 fz532477 erg712862. 8. 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. 9. Acknowledgments The SCO Group would like to thank Yun Jonglim for his work in discovering and describing this defect so well. ______________________________________________________________________________ -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (SCO/SYSV) iD8DBQFC59cEaqoBO7ipriERAtHtAJ9Ce8gZCiDlFSd+oMCB3XX+UjJBfgCeJTd8 IMWMnkKibj27Pmm9KrEJuqc= =oP0u -----END PGP SIGNATURE-----
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