SNS Vulnerability

tinyguestbook Script Insertion and SQL Injection Vulnerabilities

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.

Vulnerable Products

Vulnerable Software:
tinyguestbook

Solution

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

CVE

References

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

Vulnerability Manager Detection

IPS Protection

ASQ Engine alarm	Available Since
XSS - Prevention - POST : suspicious tag with event found in data	3.2.0
XSS - Prevention - POST : suspicious 'meta' tag found in data	3.2.0
SQL injection Prevention - POST : suspicious SELECT statement in data	3.2.0
XSS - Prevention - POST : suspicious 'object' tag found in data	3.2.0
SQL injection Prevention - POST : possible version probing in data	3.2.0
XSS - Prevention - POST : suspicious 'applet' tag found in data	3.2.0
SQL injection Prevention - POST : suspicious OPENQUERY statement in data	3.2.0
SQL injection Prevention - POST : suspicious CREATE statement in data	3.2.0
XSS - Prevention - POST : 'location' javascript object found in data	3.2.0
SQL injection Prevention - POST : suspicious UPDATE statement in data	3.2.0
XSS - Prevention - POST : javascript code found in data	3.2.0
XSS - Prevention - POST : suspicious 'iframe' tag found in data	3.2.0
SQL injection Prevention - POST : suspicious UNION statement in data	3.2.0
XSS - Prevention - POST : code allowing cookie access found in data	3.2.0
XSS - Prevention - POST : suspicious 'img' attribute found in data	3.2.0
SQL injection Prevention - POST : suspicious DROP statement in data	3.2.0
SQL injection Prevention - POST : suspicious INSERT statement in data	3.2.0
SQL injection Prevention - POST : suspicious OR statement in data	3.2.0
SQL injection Prevention - POST : suspicious EXEC statement in data	3.2.0
XSS - Prevention - POST : suspicious 'embed' tag found in data	3.2.0
XSS - Prevention - POST : suspicious 'style' tag found in data	3.2.0
SQL injection Prevention - POST : suspicious OPENROWSET statement in data	3.2.0
XSS - Prevention - POST : suspicious 'div' tag found in data	3.2.0
SQL injection Prevention - POST : suspicious DECLARE statement in data	3.2.0
XSS - Prevention - POST : 'script' tag found in data	3.2.0
XSS - Prevention - POST : suspicious 'style' attribute found in data	3.2.0
SQL injection Prevention - POST : suspicious HAVING statement in data	3.2.0
SQL injection Prevention - POST : suspicious CAST statement in data	3.2.0
XSS - Prevention - POST : suspicious 'style' tag found in data	5.0.0
XSS - Prevention - POST : javascript code found in data	5.0.0
XSS - Prevention - POST : suspicious tag with event found in data	5.0.0
SQL injection Prevention - POST : suspicious UPDATE statement in data	5.0.0
XSS - Prevention - POST : suspicious 'embed' tag found in data	5.0.0
SQL injection Prevention - POST : suspicious SELECT statement in data	5.0.0
XSS - Prevention - POST : 'location' javascript object found in data	5.0.0
SQL injection Prevention - POST : suspicious DECLARE statement in data	5.0.0
SQL injection Prevention - POST : suspicious OPENROWSET statement in data	5.0.0
SQL injection Prevention - POST : suspicious OPENQUERY statement in data	5.0.0
XSS - Prevention - POST : code allowing cookie access found in data	5.0.0
SQL injection Prevention - POST : suspicious CAST statement in data	5.0.0
SQL injection Prevention - POST : suspicious EXEC statement in data	5.0.0
SQL injection Prevention - POST : suspicious CREATE statement in data	5.0.0
SQL injection Prevention - POST : suspicious INSERT statement in data	5.0.0
XSS - Prevention - POST : 'script' tag found in data	5.0.0
SQL injection Prevention - POST : suspicious DROP statement in data	5.0.0
XSS - Prevention - POST : suspicious 'style' attribute found in data	5.0.0
SQL injection Prevention - POST : suspicious HAVING statement in data	5.0.0
XSS - Prevention - POST : suspicious 'applet' tag found in data	5.0.0
SQL injection Prevention - POST : suspicious UNION statement in data	5.0.0
XSS - Prevention - POST : suspicious 'div' tag found in data	5.0.0
SQL injection Prevention - POST : suspicious OR statement in data	5.0.0
XSS - Prevention - POST : suspicious 'img' attribute found in data	5.0.0
XSS - Prevention - POST : suspicious 'meta' tag found in data	5.0.0
XSS - Prevention - POST : suspicious 'object' tag found in data	5.0.0
SQL injection Prevention - POST : possible version probing in data	5.0.0
XSS - Prevention - POST : suspicious 'iframe' tag found in data	5.0.0

Risk level

Moderate

Vulnerability First Public Report Date

2012-01-04

Target Type

Server

Possible exploit

Remote