Steve Kemp has reported two security issues in XWine, which can be exploited by malicious, local users to perform certain actions with escalated privileges.
1) The temporary file "/tmp/temporaire" is used in an insecure manner. This can be exploited to e.g. truncate arbitrary files with the privileges of a user running xwine via symlink attacks.
2) The application sets insecure permissions for the configuration file "/etc/wine/config". This can potentially be exploited to execute arbitrary commands with the privileges of a user running wine by e.g. changing certain configuration settings.
The vulnerabilities are reported in 1.0.1-1.1. Other versions may also be affected.
Solution: Restrict access to trusted users only.
Provided and/or discovered by: Steve Kemp
Original Advisory: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=468050
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Subject: XWine Insecure Temporary File Handling and Configuration File Permissions
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