usd250 helpdesk XSS vulnerabily.

Credit: Joseph
Risk: Low
Local: No
Remote: Yes

CVSS Base Score: 4.3/10
Impact Subscore: 2.9/10
Exploitability Subscore: 8.6/10
Exploit range: Remote
Attack complexity: Medium
Authentication: No required
Confidentiality impact: None
Integrity impact: Partial
Availability impact: None Within the helpdesk utility usd250, an XSS in the comments field is possible. The comments strip script tags and replace them with (not allowed), but script tags dont need to be in place for XSS. Something along the lines of... <b onmouseover="window.alert('omghax')">some text</b> Suffices. The fix is to use htmlentities() or htmlspecialchars() to filter ALL html from user input.

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