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TITLE:
tinyguestbook Script Insertion and SQL Injection Vulnerabilities

SECUNIA ADVISORY ID:
SA47419

VERIFY ADVISORY:
Secunia.com
http://secunia.com/advisories/47419/
Customer Area (Credentials Required)
https://ca.secunia.com/?page=viewadvisory&vuln_id=47419

RELEASE DATE:
2012-01-04

DISCUSS ADVISORY:
http://secunia.com/advisories/47419/#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/47419/

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

https://ca.secunia.com/?page=viewadvisory&vuln_id=47419

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:
Multiple vulnerabilities have been discovered in tinyguestbook, which
can be exploited by malicious people to conduct script insertion and
SQL injection attacks.

1) Input passed via the "msg" parameter to sign.php when signing the
guestbook is not properly sanitised before being used. This can be
exploited to insert arbitrary HTML and script code, which will be
executed in a user's browser session in context of an affected site
when the malicious data is being viewed.

2) Input passed via the "name" and "msg" POST parameters to sign.php
(when "post" is set to "submit" and "code" is set correctly) is not
properly sanitised before being used in a SQL query. This can be
exploited to manipulate SQL queries by injecting arbitrary SQL code.

Successful exploitation of this vulnerability requires that
"magic_quotes_gpc" is disabled.

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

PROVIDED AND/OR DISCOVERED BY:
1) G13
2) Henri Salo in a bug report

ORIGINAL ADVISORY:
tinyguestbook:
http://code.google.com/p/tinyguestbook/issues/detail?id=1
http://code.google.com/p/tinyguestbook/issues/detail?id=3

G13:
http://seclists.org/bugtraq/2012/Jan/8

OTHER REFERENCES:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

DEEP LINKS:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED DESCRIPTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXTENDED SOLUTION:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

EXPLOIT:
Further details available in Customer Area:
http://secunia.com/vulnerability_intelligence/

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

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