CVE-2020-0404

Description

A flaw linked list corruption in the Linux kernel for USB Video Class driver functionality was found in the way user connects web camera to the USB port. A local user could use this flaw to crash the system.

Mitigation

To mitigate this issue, prevent the module uvcvideo from being loaded. Please see https://access.redhat.com/solutions/41278 for information on how to blacklist a kernel module to prevent it from loading automatically.

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 Score5.55.5N/A
Attack VectorLocalLocalN/A
Attack ComplexityLowLowN/A
Privileges RequiredLowLowN/A
User InteractionNoneNoneN/A
ScopeUnchangedUnchangedN/A
ConfidentialityNoneNoneN/A
Integrity ImpactNoneNoneN/A
Availability ImpactHighHighN/A

Vector

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

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

Red Hat CVSS v3 Score Explanation

The attack vector is physical or local (chosen AV:L, because it is higher impact than physical), and no privileges required (PR:N) for a physical vector of attack (however, chosen PR:L for AV:L). The user with physical access can trigger it by inserting the USB device like specific model of UVC device (like USB camera) or local user can trigger it plugging in a similar software virtual USB device (and then local user needs privileges for this).

Understanding the Weakness (CWE)

CWE-284

Other

Technical Impact: Varies by Context

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