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TITLE:
GNU Gnash Insecure Temporary Files Security Issue

SECUNIA ADVISORY ID:
SA42416

VERIFY ADVISORY:
Secunia.com
https://secunia.com/advisories/42416/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=42416

RELEASE DATE:
2010-12-01

DISCUSS ADVISORY:
https://secunia.com/advisories/42416/#comments

AVAILABLE ON SITE AND IN CUSTOMER AREA:
 * Last Update
 * Popularity
 * Comments
 * Criticality Level
 * Impact
 * Where
 * Solution Status
 * Operating System / Software
 * CVE Reference(s)

https://secunia.com/advisories/42416/

ONLY AVAILABLE IN CUSTOMER AREA:
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https://ca.secunia.com/?page=viewadvisory&vuln_id=42416

ONLY AVAILABLE WITH SECUNIA CSI AND SECUNIA PSI:
 * AUTOMATED SCANNING

https://secunia.com/vulnerability_scanning/personal/
https://secunia.com/vulnerability_scanning/corporate/wsus_sccm_3rd_third_party_patching/

DESCRIPTION:
A security issue has been discovered in GNU Gnash, which can be
exploited by malicious, local users to perform certain actions with
escalated privileges.

The security issue is caused due to the configure script using
temporary files in an insecure manner. This can be exploited via
symlink attacks to e.g. overwrite arbitrary files with the privileges
of the user running the script.

The security issue is confirmed in version 0.8.8. Other versions may
also be affected.

SOLUTION:
Restrict access to trusted users.

PROVIDED AND/OR DISCOVERED BY:
Reported in a Debian bug by Jakub Wilk.

ORIGINAL ADVISORY:
Debian Bug #605419:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=605419

OTHER REFERENCES:
Further details available in Customer Area:
https://secunia.com/products/corporate/EVM/

DEEP LINKS:
Further details available in Customer Area:
https://secunia.com/products/corporate/EVM/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
https://secunia.com/products/corporate/EVM/

EXTENDED SOLUTION:
Further details available in Customer Area:
https://secunia.com/products/corporate/EVM/

EXPLOIT:
Further details available in Customer Area:
https://secunia.com/products/corporate/EVM/

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

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Definitions: (Criticality, Where etc.)
https://secunia.com/advisories/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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