CVE-2020-16251

Description

A flaw was found in Vault and Vault Enterprise (“Vault”). In affected versions of Vault, with the GCP Auth Method configured and under certain circumstances, the values relied upon by Vault to validate Google Compute Engine (GCE) VMs may be manipulated and bypass authentication.

Common Vulnerability Scoring System (CVSS) Score Details

Info alert:Important note

CVSS scores for open source components depend on vendor-specific factors (e.g. version or build chain). Therefore, Red Hat's score and impact rating can be different from NVD and other vendors. Red Hat remains the authoritative CVE Naming Authority (CNA) source for its products and services (see Red Hat classifications).

CVSS v3 Score Breakdown

Red HatNVDcve.org
Base Score8.28.2N/A
Attack VectorNetworkNetworkN/A
Attack ComplexityLowLowN/A
Privileges RequiredNoneNoneN/A
User InteractionNoneNoneN/A
ScopeUnchangedUnchangedN/A
ConfidentialityLowLowN/A
Integrity ImpactHighHighN/A
Availability ImpactNoneNoneN/A

Vector

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

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

Red Hat CVSS v3 Score Explanation

Confidentiality and Availability metrics are Low, because:

  • Successful exploitation may lead to some loss of confidentiality, but it's not under the attacker's control what information will be obtained.
  • An attacker is not able to determine if successful exploitation will affect the availability of the target environment.

Understanding the Weakness (CWE)

CWE-287

Integrity,Confidentiality,Availability,Access Control

Technical Impact: Read Application Data; Gain Privileges or Assume Identity; Execute Unauthorized Code or Commands

This weakness can lead to the exposure of resources or functionality to unintended actors, possibly providing attackers with sensitive information or even execute arbitrary code.

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