Title: SCO OpenServer vi Insecure Temporary File Creation Vulnerability
Severity: MODERATE
Description:
An insecure temporary file creation vulnerability exists in the implementation of the vi editor included with some versions of SCO OpenServer.
The editor creates temporary files in /tmp without checking if the file already exists, using easily predictible names. As a result, it may be possible for a malicious user with local access to a host to cause local files to be overwritten, using a symbolic link attack.
The attacker must anticipate the execution of vi by a user. The target files must be writeable by the user running vi.
Affected Products:
- SCO Open Server 5.0.0
- SCO Open Server 5.0.1
- SCO Open Server 5.0.2
- SCO Open Server 5.0.3
- SCO Open Server 5.0.4
- SCO Open Server 5.0.5
- SCO Open Server 5.0.6
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