[SA18450] Light Weight Calendar "date" PHP Code Execution Vulnerability

TITLE:
Light Weight Calendar "date" PHP Code Execution Vulnerability

SECUNIA ADVISORY ID:
SA18450

VERIFY ADVISORY:
http://secunia.com/advisories/18450/

CRITICAL:
Highly critical

IMPACT:
System access

WHERE:
>From remote

SOFTWARE:
Light Weight Calendar 1.x
http://secunia.com/product/6810/

DESCRIPTION:
Aliaksandr Hartsuyeu has reported a vulnerability in Light Weight
Calendar, which can be exploited by malicious people to compromise a
vulnerable system.

Input passed to the "date" parameter in "index.php" isn't properly
sanitised before being used in an "eval()" call. This can be
exploited to execute arbitrary PHP code.

Example:
http://[victim]/index.php?stam=1928504&date=20050901);[code]&View=month

The vulnerability has been reported in version 1.0. Other versions
may also be affected.

SOLUTION:
Edit the source code to ensure that input is properly sanitised.

PROVIDED AND/OR DISCOVERED BY:
Aliaksandr Hartsuyeu

ORIGINAL ADVISORY:
http://evuln.com/vulns/29/summary.html

---

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.