Null pointer deref in X509_issuer_and_serial_hash (CVE-2021-23841)

Advisory ID CVE Number Date discovered Severity Advisory revision
STORM-2021-013 CVE-2021-23841 02/26/2021 medium v1

Vulnerability details

OpenSSL publish a security update version.

The concerned version are vulnerable against a forged certificate with an issuer field, this could cause a dereferencment of the null pointer and cause the concerned version of the application to crash or a DoS of the application

Impacted products

ProductsSeverityDetail
Stormshield Management Center medium Impacted

Revisions

Version Date Description
v1  04/09/2021 Initial release

 



Stormshield Management Center

CVSS v3.1 Overall Score: 4.7      

Analysis

Impacted version

The concerned version are vulnerable against a forged certificate with an issuer field, this could cause a dereferencment of the null pointer and cause the concerned version of the application to crash or a DoS of the application
  • SMC 2.8.X

Workaround solution

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 (CR) Integrity Requirement (IR) Availability Requirement (AR)
Medium High High
CVSS Environmental score: 4.7 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)