Vulnerability in Intel Ethernet Controller firmware (CVE-2020-8693)

Advisory ID CVE Number Date discovered Severity Advisory revision
STORM-2020-036 CVE-2020-8693 11/27/2020 high v1

Vulnerability details

Improper buffer restrictions in the firmware of the Intel(R) Ethernet 700 Series Controllers before version 7.3 may allow a privileged user to potentially enable escalation of privilege and/or denial of service via local access.


Impacted products

Stormshield Network Security high SNS is impacted


Version Date Description
v1 11/27/2020 Initial release
v2 03/24/2023 Public release


Stormshield Network Security

CVSS v3.1 Overall Score: 7.1      


Impacted version

This vulnerability could allow an attacker with a local access (ability to run on SNS his own code or script) to the appliance to potentially enable privilege escalation and/or denial of service.

This vulnerability is useless for an attacker who already have administrator access because an administrator is the highest privileges on the appliance.

As this vulnerability can only be exploited locally, it can not provide an external attacker access to an SNS appliance.


The following models are impacted :

  • SN1100
  • SN2100
  • SN3100
  • SN6100

SNS prior to 4.7.0

Workaround solution


In order to mitigate the risk of exploitation keep your appliance updated.

As stated in the analysis, this vulnerability can only be exploited locally. On SNS, local access are only granted to user with the highest privileges. Therefore an exploitation of this vulnerability is useless to a SNS local user.

Nevertheless, a fix for this vulnerability has been delivered in the version 4.7.0.


Attack Vector Attack Complexity Privileges Required User Interaction Scope Confidentiality Impact Integrity Impact Availability impact
Local Low High None Changed None Low High
CVSS Base score: 6.7 CVSS Vector: (AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:H)
Exploit Code Maturity Remediation Level Report Confidence
Unproven that exploit exists Official fix Confirmed
CVSS Temporal score: 5.8 CVSS Vector: (AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:H/E:U/RL:O/RC:C)
Confidentiality Requirement Integrity Requirement Availability Requirement
High High High
CVSS Environmental score: 7.1 CVSS Vector: (AV:L/AC:L/PR:H/UI:N/S:C/C:N/I:L/A:H/E:U/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)