OpenSSL int overflow in CipherUpdate (CVE-2021-23840)

Advisory ID CVE Number Date discovered Severity Advisory revision
STORM-2021-012 CVE-2021-23840 02/26/2021 low v1

Vulnerability details

Following a new security update of NodeJS for the TLS branch.

A new vulnerability has been detected on SMC.

With a forged certificate an attackant could make SMC crash.

Impacted products

Stormshield Management Center low Impacted


Version Date Description
v1  04/09/2021 Initial release

Stormshield Management Center

CVSS v3.1 Overall Score: 3.1      


Impacted version

With a forged certificate an attackant could cause the application to crash for the concerned versions.

  • SMC 2.8.x

Workaround solution


There is no workaround solution.

The 2.8.2 update will fix this vulnerability.

Attack Vector Attack Complexity Privileges Required User Interaction Scope Confidentiality Impact Integrity Impact Availability impact
Network High None Required Unchanged None None Low
CVSS Base score: 3.1 CVSS Vector: (AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L)
Exploit Code Maturity Remediation Level Report Confidence
Unproven that exploit exists Official fix Unknown
CVSS Temporal score: 2.5 CVSS Vector: (AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:O/RC:U)
Confidentiality Requirement Integrity Requirement Availability Requirement
Medium High High
CVSS Environmental score: 3.1 CVSS Vector: (AV:N/AC:H/PR:N/UI:R/S:U/C:N/I:N/A:L/E:U/RL:O/RC:U/CR:M/IR:H/AR:H/MAV:X/MAC:X/MPR:X/MUI:X/MS:X/MC:X/MI:X/MA:X)