Caldera UnixWare CDE dtlogin error log directory /var/dt/ symlink
|unixware-dtlogin-log-symlink (7864)||Medium Risk|
The CDE dtlogin utility in Caldera UnixWare logs errors to the /var/dt/Xerrors file with 777 permissions. A local attacker could create a symbolic link from /var/dt/Xerrors to any file on the system, which would be overwritten once a unsuccessful remote login occurs. An attacker could use this vulnerability to overwrite critical system files and cause a denial of service or gain elevated privileges on the system.
No remedy available as of December 1, 2013.
- BugTraq Mailing List, Tue Jan 08 2002 - 00:13:59 CST: CDE bug in Unixware 7.1.
- BID-3818: UnixWare CDE DTLogin Log Directory Insecure Permissions Vulnerability
- CVE-2002-0105: CDE dtlogin in Caldera UnixWare 7.1.0, and possibly other operating systems, allows local users to gain privileges via a symlink attack on /var/dt/Xerrors since /var/dt is world-writable.
- OSVDB ID: 9331: SCO UnixWare dtlogin Xerrors Symlink Privilege Escalation
- SCO Caldera UnixWare 7.1.0
Jan 08, 2002
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