Tal Argoni has reported a vulnerability in Netquery, which can be exploited by malicious people to conduct script insertion attacks.
Input passed to the "User-Agent" HTTP header in nquser.php is not properly sanitised before being used. This can be exploited to insert arbitrary HTML and script code, which is executed in a user's browser session in context of an affected site when the malicious user data is viewed.
Solution: Apply vendor patch for version 4.0.
Provided and/or discovered by: Tal Argoni, Zion Security.
Original Advisory: Zion Security:
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