STIGQter: STIG Summary: Mozilla Firefox Security Technical Implementation Guide Version: 5 Release: 1 Benchmark Date: 22 Jan 2021:

Firefox is not configured to prompt a user before downloading and opening required file types.

DISA Rule

SV-223158r612236_rule

Vulnerability Number

V-223158

Group Title

SRG-APP-000279

Rule Version

DTBF110

Severity

CAT II

CCI(s)

• CCI-001243 - The organization configures malicious code protection mechanisms to perform organization-defined action(s) in response to malicious code detection.

Weight

10

Fix Recommendation

Ensure the following extensions are not automatically opened by Firefox without user confirmation. Do not use plugins and add-ons to open these files.
Use the "plugin.disable_full_page_plugin_for_types" preference to set and lock the following extensions so that an external application, rather than an add-on or plugin, will not be used:
PDF, FDF, XFDF, LSL, LSO, LSS, IQY, RQY, XLK, XLS, XLT, POT, PPS, PPT, DOS, DOT, WKS, BAT, PS, EPS, WCH, WCM, WB1, WB3, RTF, DOC, MDB, MDE, WBK, WB1, WCH, WCM, AD, ADP.

Check Contents

Open a browser window, type "about:config" in the address bar.
Criteria: If the “plugin.disable_full_page_plugin_for_types” value is not set to include the following external extensions and not locked, this is a finding:
PDF, FDF, XFDF, LSL, LSO, LSS, IQY, RQY, XLK, XLS, XLT, POT, PPS, PPT, DOS, DOT, WKS, BAT, PS, EPS, WCH, WCM, WB1, WB3, RTF, DOC, MDB, MDE, WBK, WB1, WCH, WCM, AD, ADP.

Vulnerability Number

V-223158

Documentable

False

Rule Version

DTBF110

Severity Override Guidance

Open a browser window, type "about:config" in the address bar.
Criteria: If the “plugin.disable_full_page_plugin_for_types” value is not set to include the following external extensions and not locked, this is a finding:
PDF, FDF, XFDF, LSL, LSO, LSS, IQY, RQY, XLK, XLS, XLT, POT, PPS, PPT, DOS, DOT, WKS, BAT, PS, EPS, WCH, WCM, WB1, WB3, RTF, DOC, MDB, MDE, WBK, WB1, WCH, WCM, AD, ADP.

Check Content Reference

M

Target Key

4097

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