HTTP: JavaScript "data:" URL Scheme Source
This signature detects the download of a HTML document containing JavaScript using the "data:" URL scheme. This scheme is defined in RFC2397 and is a legitimate usage of HTML. However, attackers can use the scheme to first embed malware in a Web page, then bypass specific filters that normally detect such a delivery.
Short Name
HTTP:STC:JS-DATA-SCHEME
Severity
Minor
Recommended
False
Recommended Action
Drop
Category
HTTP
Keywords
"data:" JavaScript Scheme Source URL
Release Date
12/05/2012
Supported Platforms
srx-branch-12.3
srx-19.3
srx-branch-19.3
vsrx3bsd-19.2
srx-branch-19.4
vsrx-19.4
mx-12.3
mx-19.4
vmx-19.4
mx-19.3
vsrx3bsd-19.4
srx-19.4
vsrx-12.3
vmx-19.3
vsrx-19.2
srx-12.3
Sigpack Version
3375
False Positive
Occasionally