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TITLE:
Mono "System.CodeDom.Compiler" Insecure Temporary Creation

SECUNIA ADVISORY ID:
SA22237

VERIFY ADVISORY:
http://secunia.com/advisories/22237/

CRITICAL:
Less critical

IMPACT:
Privilege escalation

WHERE:
Local system

SOFTWARE:
Mono 1.x
http://secunia.com/product/4673/

DESCRIPTION:
A vulnerability has been reported in Mono, which can be exploited by
malicious, local users to perform certain actions with escalated
privileges.

The vulnerability is caused due to the way the
"System.CodeDom.Compiler" classes use temporary files. This can be
exploited via symlink attacks to create or overwrite arbitrary files
with the privileges of the user running the application and
potentially allows to inject arbitrary code into the running mono
processes.

SOLUTION:
Grant only trusted users access to affected systems.

PROVIDED AND/OR DISCOVERED BY:
Sebastian Krahmer, SuSE Security Team

ORIGINAL ADVISORY:
http://www.ubuntu.com/usn/usn-357-1

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About:
This Advisory was delivered by Secunia as a free service to help
everybody keeping their systems up to date against the latest
vulnerabilities.

Subscribe:
http://secunia.com/secunia_security_advisories/

Definitions: (Criticality, Where etc.)
http://secunia.com/about_secunia_advisories/


Please Note:
Secunia recommends that you verify all advisories you receive by
clicking the link.
Secunia NEVER sends attached files with advisories.
Secunia does not advise people to install third party patches, only
use those supplied by the vendor.

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