The UEM server must generate unique session identifiers using a FIPS-validated Random Number Generator (RNG) based on the Deterministic Random Bit Generators (DRBG) algorithm.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-234408	SRG-APP-000224-UEM-000135	SV-234408r617355_rule		High

Description
Sequentially generated session IDs can be easily guessed by an attacker. Employing the concept of randomness in the generation of unique session identifiers helps to protect against brute-force attacks to determine future session identifiers. Unique session IDs address man-in-the-middle attacks, including session hijacking or insertion of false information into a session. If the attacker is unable to identify or guess the session information related to pending application traffic, they will have more difficulty in hijacking the session or otherwise manipulating valid sessions. The DRBGs Hash_DRBG, HMAC_DRBG, and CTR_DRBG are recommended for use with RNGs. This requirement is applicable to devices that use a web interface for device management. Satisfies:FCS_RBG_EXT.1.1, FIA_UAU.1.1, FIA_UAU.1.2

Description

Sequentially generated session IDs can be easily guessed by an attacker. Employing the concept of randomness in the generation of unique session identifiers helps to protect against brute-force attacks to determine future session identifiers. Unique session IDs address man-in-the-middle attacks, including session hijacking or insertion of false information into a session. If the attacker is unable to identify or guess the session information related to pending application traffic, they will have more difficulty in hijacking the session or otherwise manipulating valid sessions. The DRBGs Hash_DRBG, HMAC_DRBG, and CTR_DRBG are recommended for use with RNGs. This requirement is applicable to devices that use a web interface for device management. Satisfies:FCS_RBG_EXT.1.1, FIA_UAU.1.1, FIA_UAU.1.2

STIG	Date
Unified Endpoint Management Server Security Requirements Guide	2020-12-14

Details

Check Text ( C-37593r614234_chk )
Verify the UEM server generates unique session identifiers using a FIPS-validated RNG based on the DRBG algorithm. If the UEM server does not generate unique session identifiers using a FIPS-validated RNG based on the DRBG algorithm, this is a finding.

Fix Text (F-37558r614235_fix)
Configure the UEM server to generate unique session identifiers using a FIPS-validated RNG based on the DRBG algorithm.