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CVE-2020-27212

Severity CVSS v4.0:
Pending analysis
Type:
CWE-74 Injection
Publication date:
21/05/2021
Last modified:
08/06/2021

Description

STMicroelectronics STM32L4 devices through 2020-10-19 have incorrect access control. The flash read-out protection (RDP) can be degraded from RDP level 2 (no access via debug interface) to level 1 (limited access via debug interface) by injecting a fault during the boot phase.

Impact

Vector 3.x
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.00 HIGH
Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Local
Attack Complexity (AC): High
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
7.00
Severity 3.x
HIGH
Vector 2.0
AV:L/AC:M/Au:N/C:P/I:P/A:P CVSS v2.0 Severity and Metrics:

Base Score: 4.40 MEDIUM
Vector: AV:L/AC:M/Au:N/C:P/I:P/A:P

Attack Vector (AV): Local
Attack Complexity (AC): Medium
Authentication (Au): None
Confidentiality (C): Physical
Integrity (I): Physical
Availability (A): Physical

Base Score 2.0
4.40
Severity 2.0
MEDIUM

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:st:stm32cubel4_firmware:*:*:*:*:*:*:*:* 1.16.0 (including)
cpe:2.3:h:st:stm32l412c8:-:*:*:*:*:*:*:*
cpe:2.3:h:st:stm32l412cb:-:*:*:*:*:*:*:*
cpe:2.3:h:st:stm32l412k8:-:*:*:*:*:*:*:*
cpe:2.3:h:st:stm32l412kb:-:*:*:*:*:*:*:*
cpe:2.3:h:st:stm32l412r8:-:*:*:*:*:*:*:*
cpe:2.3:h:st:stm32l412rb:-:*:*:*:*:*:*:*
cpe:2.3:h:st:stm32l412t8:-:*:*:*:*:*:*:*
cpe:2.3:h:st:stm32l412tb:-:*:*:*:*:*:*:*
cpe:2.3:h:st:stm32l422cb:-:*:*:*:*:*:*:*
cpe:2.3:h:st:stm32l422kb:-:*:*:*:*:*:*:*
cpe:2.3:h:st:stm32l422rb:-:*:*:*:*:*:*:*
cpe:2.3:h:st:stm32l422tb:-:*:*:*:*:*:*:*
cpe:2.3:h:st:stm32l431cb:-:*:*:*:*:*:*:*
cpe:2.3:h:st:stm32l431cc:-:*:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools