TITLE:
thttpd "syslogtocern" Insecure Temporary File Creation

SECUNIA ADVISORY ID:
SA17454

VERIFY ADVISORY:
http://secunia.com/advisories/17454/

CRITICAL:
Not critical

IMPACT:
Privilege escalation

WHERE:
Local system

SOFTWARE:
thttpd 2.x
http://secunia.com/product/2454/

DESCRIPTION:
Javier Fernandez-Sanguino Pena has reported a vulnerability in
thttpd, which can be exploited by malicious, local users to perform
certain actions on a vulnerable system with escalated privileges.

The vulnerability is caused due to temporary files being created
insecurely. This can be exploited via symlink attacks in combination
with a race condition to overwrite arbitrary files with the
privileges of the user running the "syslogtocern" script.

SOLUTION:
Grant only trusted users access to affected systems.

PROVIDED AND/OR DISCOVERED BY:
Javier Fernandez-Sanguino Pena, Debian Security Audit team

ORIGINAL ADVISORY:
http://www.debian.org/security/2005/dsa-883

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