SES Evolution server access check bypass (CVE-2021-31222)

Advisory ID CVE Number Date discovered Severity Advisory revision
STORM-2021-024 CVE-2021-31222 04/06/2021 medium v1

Vulnerability details

SES Evolution before 2.1.0 allows updating some parts of a security policy by leveraging access to a computer having the administration console installed.

Impacted products

ProductsSeverityDetail
Stormshield Endpoint Security medium SES is impacted

Revisions

Version Date Description
v1  07/12/2021 Initial release


Stormshield Endpoint Security

CVSS v3.1 Overall Score: 6.4      

Analysis

Impacted version

An attacker may trick a user connected to a machine where the SES Evolution console is installed to execute a malicious program in order to update an existing script (executed when a malicious action is detected or to determine the security policy to apply) with malicious contents. This script will eventually be used the next time changes are deployed to the environment.
  • SES 2.0.0 to 2.0.2

Workaround solution

Solution

There is no workaround solution.

The 2.1.0 update fixes this vulnerability.



Attack Vector Attack Complexity Privileges Required User Interaction Scope Confidentiality Impact Integrity Impact Availability impact
Adjacent Network High None Required Unchanged High High High
CVSS Base score: 7.1 CVSS Vector: (AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H)
Exploit Code Maturity Remediation Level Report Confidence
Proof of concept code Official fix Confirmed
CVSS Temporal score: 6.4 CVSS Vector: (AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C)
Confidentiality Requirement Integrity Requirement Availability Requirement
High High High
CVSS Environmental score: 6.4 CVSS Vector: (AV:A/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C/CR:H/IR:H/AR:H/MAV:X/MAC:X/MPR:X/MUI:X/MS:X/MC:X/MI:X/MA:X)