To: announce@lists.caldera.com bugtraq@securityfocus.com full-disclosure@lists.n etsys.com -----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 ______________________________________________________________________________ SCO Security Advisory Subject: OpenServer 5.0.5 : Insecure creation of files in /tmp Advisory number: CSSA-2003-SCO.27 Issue date: 2003 October 20 Cross reference: sr865679 fz521201 erg712072 CAN-2003-0872 ______________________________________________________________________________ 1. Problem Description Several scripts use files /tmp in a insecure way. These filenames can be symlinked to by a malicious user, and cause various nefarious things to happen. OpenServer 5.0.6 has previously fixed all these scripts, hence this issue does not affect OpenServer 5.0.6 or 5.0.7. The Common Vulnerabilities and Exposures (CVE) project has assigned the name CAN-2003-0872 to this issue. This is a candidate for inclusion in the CVE list (http://cve.mitre.org), which standardizes names for security problems. Candidates may change significantly before they become official CVE entries. 2. Vulnerable Supported Versions System Binaries ---------------------------------------------------------------------- OpenServer 5.0.5 /etc/init.d/VDISK /etc/init.d/VDRESTORE /etc/tcp /usr/lib/mkdev/hostmib /etc/init.d/hostmib /etc/nfs /etc/nis /etc/rpcinit /usr/lib/cleantmp 3. Solution The proper solution is to install the latest packages. 4. OpenServer 5.0.5 4.1 Location of Fixed Binaries ftp://ftp.sco.com/pub/updates/OpenServer/CSSA-2003-SCO.27 4.2 Verification MD5 (VOL.000.000) = 24ea1000e89272a3d2f12d9fd05de83f 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: 1) Download the VOL* files to the /tmp directory 2) Run the custom command, specify an install from media images, and specify the /tmp directory as the location of the images. 5. References http://www.cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0872 SCO security resources: http://www.sco.com/support/security/index.html This security fix closes SCO incidents sr865679 fz521201 erg712072. 6. 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. 7. Acknowledgments These vulnerabilities were discovered by Tomasz Kusmierz. ______________________________________________________________________________ -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.2.3 (SCO/UNIX_SVR5) iD8DBQE/lHnpaqoBO7ipriERAmjsAKCKdkBHb9SdVFuJILsGQR77ULb7cQCfR+Gm I44TmGqRUrGA8q2pjJ/RVc0= =S+GY -----END PGP SIGNATURE-----