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A step-by-step discussion of the latest Flash Player 0-day exploit:
http://secunia.com/blog/210


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TITLE:
TimThumb Cross-Site Scripting and Denial of Service Vulnerabilities

SECUNIA ADVISORY ID:
SA44126

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/44126/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=44126

RELEASE DATE:
2011-04-16

DISCUSS ADVISORY:
http://secunia.com/advisories/44126/#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/44126/

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=44126

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:
Two security issues and two vulnerabilities have been reported in
TimThumb, which can be exploited by malicious people to conduct
cross-site scripting attacks and cause a DoS (Denial of Service).

1) Input passed to the "src" parameter in timthumb.php is not
properly sanitised before being returned to the user. This can be
exploited to execute arbitrary HTML and script code in a user's
browser session in context of an affected site.

2) Certain unspecified input passed to the URL query string in
timthumb.php is not properly sanitised before being returned to the
user. This can be exploited to execute arbitrary HTML and script code
in a user's browser session in context of an affected site.

3) The application handles overly large remote image data improperly,
which can be exploited to cause a DoS.

4) The application processes overly large image dimensions being
passed to the image resizing functionality improperly, which can be
exploited to cause a DoS.

SOLUTION:
Update to the latest version.

PROVIDED AND/OR DISCOVERED BY:
1) A TimThumb customer within a bug report.
2-4) Disclosed in SVN commits.

ORIGINAL ADVISORY:
timthumb Google Code:
http://code.google.com/p/timthumb/issues/detail?id=49
http://code.google.com/p/timthumb/source/detail?r=88
http://code.google.com/p/timthumb/source/detail?r=114
http://code.google.com/p/timthumb/source/detail?r=123

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:
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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Secunia NEVER sends attached files with advisories.
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