To: bugtraq@securityfocus.com announce@lists.caldera.com scoannmod@xenitec.on.ca ______________________________________________________________________________ Caldera International, Inc. Security Advisory Subject: UnixWare 7.1.1 Open UNIX 8.0.0 : ppptalk root privilege vulnerability Advisory number: CSSA-2002-SCO.27 Issue date: 2002 June 18 Cross reference: ______________________________________________________________________________ 1. Problem Description If pppd is running (which it is on a default installation), a malicious user can use /usr/bin/ppptalk (or its link, /usr/bin/ppp), to gain root privileges. 2. Vulnerable Supported Versions System Binaries ---------------------------------------------------------------------- UnixWare 7.1.1 /usr/bin/ppptalk Open UNIX 8.0.0 /usr/bin/ppptalk 3. Solution The proper solution is to install the latest packages. However, removing the setuid bits from the /etc/ppptalk binary will effectively eliminate the vulnerability. 4. UnixWare 7.1.1 4.1 Location of Fixed Binaries ftp://ftp.caldera.com/pub/updates/OpenUNIX/CSSA-2002-SCO.27 4.2 Verification MD5 (erg712071.pkg.Z) = 9e353b58860c1b2ab4e831410f44fa12 md5 is available for download from ftp://ftp.caldera.com/pub/security/tools 4.3 Installing Fixed Binaries Upgrade the affected binaries with the following commands: Download erg712071.pkg.Z to the /var/spool/pkg directory # uncompress /var/spool/pkg/erg712071.pkg.Z # pkgadd -d /var/spool/pkg/erg712071.pkg 5. Open UNIX 8.0.0 5.1 Location of Fixed Binaries ftp://ftp.caldera.com/pub/updates/OpenUNIX/CSSA-2002-SCO.27 5.2 Verification MD5 (erg712071.pkg.Z) = 9e353b58860c1b2ab4e831410f44fa12 md5 is available for download from ftp://ftp.caldera.com/pub/security/tools 5.3 Installing Fixed Binaries Upgrade the affected binaries with the following commands: Download erg712071.pkg.Z to the /var/spool/pkg directory # uncompress /var/spool/pkg/erg712071.pkg.Z # pkgadd -d /var/spool/pkg/erg712071.pkg 6. References Specific references for this advisory: none Caldera security resources: http://www.caldera.com/support/security/index.html This security fix closes Caldera incidents sr865661, fz521199 and erg712071. 7. Disclaimer Caldera International, Inc. 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 Caldera products. ______________________________________________________________________________
Attachment:
pgp00155.pgp
Description: PGP signature
