CVE-2020-12327: Vulnerability Analysis & Exploit Details

Status: Analyzed - Last modified: 24-11-2020 Published: 12-11-2020

CVE-2020-12327
Vulnerability Scoring

4.4
/10

Attack Complexity Details

  • Attack Complexity: Low Impact
  • Attack Vector: LOCAL
  • Privileges Required: HIGH IMPACT
  • Scope: UNCHANGED
  • User Interaction: NONE

CIA Impact Definition

  • Confidentiality: HIGH IMPACT
  • Integrity:
  • Availability:

CVE-2020-12327 Vulnerability Summary

Insecure default variable initialization in some Intel(R) Thunderbolt(TM) DCH drivers for Windows* before version 72 may allow a privileged user to potentially enable information disclosure via local access.

Access Complexity Graph for CVE-2020-12327

Impact Analysis for CVE-2020-12327

CVE-2020-12327: Detailed Information and External References

EPSS

0.00044

EPSS %

0.15085

References

0.00044

CWE

CWE-1188

CAPEC

0.00044

  • Exploitation of Thunderbolt Protection Flaws: An adversary leverages a firmware weakness within the Thunderbolt protocol, on a computing device to manipulate Thunderbolt controller firmware in order to exploit vulnerabilities in the implementation of authorization and verification schemes within Thunderbolt protection mechanisms. Upon gaining physical access to a target device, the adversary conducts high-level firmware manipulation of the victim Thunderbolt controller SPI (Serial Peripheral Interface) flash, through the use of a SPI Programing device and an external Thunderbolt device, typically as the target device is booting up. If successful, this allows the adversary to modify memory, subvert authentication mechanisms, spoof identities and content, and extract data and memory from the target device. Currently 7 major vulnerabilities exist within Thunderbolt protocol with 9 attack vectors as noted in the Execution Flow.

Vulnerable Configurations

  • cpe:2.3:a:intel:thunderbolt_dch_driver:-:*:*:*:*:windows:*:*
    cpe:2.3:a:intel:thunderbolt_dch_driver:-:*:*:*:*:windows:*:*
  • cpe:2.3:a:intel:thunderbolt_dch_driver:1.41.1054.0:*:*:*:*:windows:*:*
    cpe:2.3:a:intel:thunderbolt_dch_driver:1.41.1054.0:*:*:*:*:windows:*:*

CVSS3 Source

nvd@nist.gov

CVSS3 Type

Primary

CVSS3 Vector

CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N

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