2021-31220 | Stormshield SES Evolution Security Policy access control

By Max On Jul 16, 2021

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
5.3	$0-$5k	0.23

A vulnerability was found in Stormshield SES Evolution up to 2.0.x and classified as critical. Affected by this issue is an unknown functionality of the component Security Policy Handler. The manipulation with an unknown input leads to a privilege escalation vulnerability. Using CWE to declare the problem leads to CWE-284. Impacted is confidentiality, integrity, and availability. CVE summarizes:

SES Evolution before 2.1.0 allows modifying security policies by leveraging access of a user having read-only access to security policies.

The weakness was released 07/13/2021. The advisory is available at advisories.stormshield.eu. This vulnerability is handled as CVE-2021-31220 since 04/15/2021. The exploitation is known to be easy. The attack can only be done within the local network. The successful exploitation needs a simple authentication. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1068 by the MITRE ATT&CK project.

Upgrading to version 2.1.0 eliminates this vulnerability.

Vendor