SES Evolution server access check bypass (CVE-2021-31220)
| Advisory ID | CVE Number | Date discovered | Severity | Advisory revision |
|---|---|---|---|---|
| STORM-2021-022 | CVE-2021-31220 | 04/06/2021 | medium | v1 |
Vulnerability details
SES Evolution before 2.1.0 allows modifying security policies by leveraging access of a user having read-only access to security policies.
Impacted products
| Products | Severity | Detail |
|---|---|---|
| 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: 5.3
|
Analysis |
Impacted version |
|
An attacker may trick a user having read-only access to SES Evolution security policies to execute a malicious program in order to update an existing security policy with malicious contents. This policy will eventually be used the next time changes are deployed to the environment. |
|
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 | Low | Low | Required | Unchanged | High | High | High |
| CVSS Base score: 7.4 | CVSS Vector: (AV:A/AC:L/PR:L/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: 6.7 | CVSS Vector: (AV:A/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C) |
| Confidentiality Requirement (CR) | Integrity Requirement (IR) | Availability Requirement (AR) |
|---|---|---|
| High | High | High |
| CVSS Environmental score: 5.3 | CVSS Vector: (AV:A/AC:L/PR:L/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) |