BRU /tmp file symlink attack
| bru-tmp-file-symlink (8003) |  Medium Risk |
Description:
BRU (The Backup and Restore Utility) could allow a local attacker to launch a symlink attack, caused by various shell scripts that create easily predictable file names in the /tmp directory. A local attacker could create a symbolic link from a file in the /tmp directory to an arbitrary file on the system to overwrite the file with elevated privileges once the affected script is executed.
Consequences:
File Manipulation
Remedy:
Upgrade to the latest version of BRU (17.0.0.2.1 or later), available from The TOLIS Group, Inc.'s Web site. See References.
References:
- BugTraq Mailing List, Fri Sep 13 2002 - 17:20:03 CDT: Re: Race condition in BRU Workstation 17.0.
- BugTraq Mailing List, Sat Jan 26 2002 - 04:00:55 CST: bru backup program.
- The TOLIS Group, Inc. Web site: BRU.
- BID-3970: BRU SetLicense Script Insecure Temporary File Symbolic Link Vulnerability
- CVE-2002-0210: setlicense for TOLIS Group Backup and Restore Utility (BRU) 17.0 allows local users to overwrite arbitrary files via a symlink attack on the /tmp/brutest.$$ temporary file.
- OSVDB ID: 14894: BRU setlicense Symlink Arbitrary File Overwrite
Platforms Affected:
- TOLIS Group BRU 17.0
Reported:
Jan 26, 2002
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