Check: FFOX-00-000006
Mozilla Firefox STIG:
FFOX-00-000006
(in versions v6 r5 through v6 r3)
Title
Firefox must be configured to not automatically execute or download MIME types that are not authorized for auto-download. (Cat II impact)
Discussion
Some files can be downloaded or execute without user interaction. This setting ensures these files are not downloaded and executed.
Check Content
Type "about:preferences" in the browser address bar. Type "Applications" in the Find bar in the upper-right corner. Determine if any of the following file extensions are listed: HTA, JSE, JS, MOCHA, SHS, VBE, VBS, SCT, WSC, FDF, XFDF, LSL, LSO, LSS, IQY, RQY, DOS, BAT, PS, EPS, WCH, WCM, WB1, WB3, WCH, WCM, AD. If the entry exists and the "Action" is "Save File" or "Always Ask", this is not a finding. If an extension exists and the entry in the Action column is associated with an application that does/can execute the code, this is a finding.
Fix Text
Remove any unauthorized extensions from the auto-download list.
Additional Identifiers
Rule ID: SV-251550r879664_rule
Vulnerability ID: V-251550
Group Title: SRG-APP-000278
Expert Comments
CCIs
| Number | Definition |
|---|---|
| CCI-001242 |
The organization configures malicious code protection mechanisms to perform real-time scans of files from external sources at endpoints as the files are downloaded, opened, or executed in accordance with organizational security policy. |
Controls
| Number | Title |
|---|---|
| SI-3 |
Malicious Code Protection |