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TITLE:
TrueCrypt "setuid" Local Denial of Service and Privilege Escalation
Security Issue

SECUNIA ADVISORY ID:
SA24643

VERIFY ADVISORY:
http://secunia.com/advisories/24643/

CRITICAL:
Not critical

IMPACT:
Privilege escalation, DoS

WHERE:
Local system

SOFTWARE:
TrueCrypt 4.x
http://secunia.com/product/7610/

DESCRIPTION:
Tim Rees has discovered a security issue in TrueCrypt, which can be
exploited by malicious, local users to cause a DoS (Denial of
Service) or gain escalated privileges.

The security issue is caused if the "truecrypt" binary is installed
setuid root. This can be exploited to cause a DoS or gain escalated
privileges by e.g. mounting a malicious TrueCrypt disk into /usr/bin
or another user's home directory.

Successful exploitation requires that TrueCrypt is installed setuid
root (not default setting).

The security issue is confirmed in version 4.3. Other versions may
also be affected.

SOLUTION:
Remove the setuid bit from the "truecrypt" binary.

PROVIDED AND/OR DISCOVERED BY:
Tim Rees

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About:
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everybody keeping their systems up to date against the latest
vulnerabilities.

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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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