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TITLE: CVS Insecure Temporary File Usage Security Issue
SECUNIA ADVISORY ID: SA16553
VERIFY ADVISORY: http://secunia.com/advisories/16553/
CRITICAL: Not critical
IMPACT: Privilege escalation
WHERE: Local system
SOFTWARE: Concurrent Versions System (CVS) 1.x http://secunia.com/product/974/
DESCRIPTION: Josh Bressers has reported a security issue in cvs, which potentially can be exploited by malicious, local users to perform certain actions on a vulnerable system with escalated privileges.
The security issue is caused due to insecure temporary file usage by the cvsbug.in script when saving temporary output to "/tmp" . This may be exploited via symlink attacks to create or overwrite arbitrary files with the privileges of the user invoking the vulnerable script.
The security issue has been reported in version 1.12.12. Other versions may also be affected.
SOLUTION: Grant only trusted users access to vulnerable systems.
PROVIDED AND/OR DISCOVERED BY: Josh Bressers
ORIGINAL ADVISORY: https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=166366
About: This Advisory was delivered by Secunia as a free service to help everybody keeping their systems up to date against the latest vulnerabilities.
Definitions: (Criticality, Where etc.) http://secunia.com/about_secunia_advisories/
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