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Windows Applications Insecure Library Loading

The Official, Verified Secunia List:
http://secunia.com/advisories/windows_insecure_library_loading/

The list is continuously updated as we confirm the vulnerability reports so check back regularly too see if any of your apps are affected.


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TITLE:
GNU C Library Dynamic Linker "$ORIGIN" Expansion Weakness

SECUNIA ADVISORY ID:
SA41795

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/41795/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=41795

RELEASE DATE:
2010-10-20

DISCUSS ADVISORY:
http://secunia.com/advisories/41795/#comments

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

http://secunia.com/advisories/41795/

ONLY AVAILABLE IN CUSTOMER AREA:
 * Authentication Level
 * Report Reliability
 * Secunia PoC
 * Secunia Analysis
 * Systems Affected
 * Approve Distribution
 * Remediation Status
 * Secunia CVSS Score
 * CVSS

https://ca.secunia.com/?page=viewadvisory&vuln_id=41795

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

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

DESCRIPTION:
Tavis Ormandy has reported a weakness in the GNU C Library, which can
be exploited by malicious, local users to gain escalated privileges.

The weakness is caused due to dynamic linker expanding the "$ORIGIN"
substitution for privileged applications, which can be exploited to
gain escalated privileges by e.g. hard linking to a setuid
application and forcing the expansion of "$ORIGIN" via "LD_AUDIT".

SOLUTION:
Restrict access to trusted users only.

PROVIDED AND/OR DISCOVERED BY:
Tavis Ormandy

ORIGINAL ADVISORY:
Tavis Ormandy:
http://archives.neohapsis.com/archives/fulldisclosure/2010-10/0258.html

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

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

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

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

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

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About:
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