BES IT Policy rule must be configured as required. IT Policy rule Disallow File Transfer Types (Instant Messaging policy group) must be set as required.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-19753	WIR1450-34	SV-21899r4_rule	ECSC-1	Low

Description
Insecure file types are transferred to BlackBerry via IM, increasing the risk of malware being downloaded on the BlackBerry and being transferred to the DoD enclave.

STIG	Date
BlackBerry Enterprise Server (version 5.x), Part 3 Security Technical Implementation Guide	2015-07-02

Details

Check Text ( C-24199r4_chk )
Detailed Policy Requirements: File types with known vulnerabilities will not be downloaded via an IM connection. Specific banned file types are based on local policy (e.g., .exe, .bat.). ****For this check, set IT Policy rule "Disallow File Transfer Types" (Instant Messaging policy group) to "" (to block all files) or specify specific file types to block based on local policy (e.g., .exe, .bat, mp3, .zip). Check Procedures: This is a BES IT Policy check. Recommend all checks related to BES IT policies be reviewed using the procedure in Check WIR1400-01 (V0003545). *****Verify IT Policy rule "Disallow File Transfer Types" (Instant Messaging policy group) is set as required. If not set as required, this is a finding.

Check Text ( C-24199r4_chk )

Detailed Policy Requirements:

File types with known vulnerabilities will not be downloaded via an IM connection. Specific banned file types are based on local policy (e.g., .exe, .bat.).

*****For this check, set IT Policy rule "Disallow File Transfer Types" (Instant Messaging policy group) to "*" (to block all files) or specify specific file types to block based on local policy (e.g., .exe, .bat, mp3, .zip).

Check Procedures:

This is a BES IT Policy check. Recommend all checks related to BES IT policies be reviewed using the procedure in Check WIR1400-01 (V0003545).

*****Verify IT Policy rule "Disallow File Transfer Types" (Instant Messaging policy group) is set as required.

If not set as required, this is a finding.

Fix Text (F-23386r4_fix)
Configure the IT Policy rule as specified in the "Checks" block.