PT-2020-4019 · Microsoft · Onedrive For Windows Desktop

Afang5472 + 3 · Published 2020-09-08 · Updated 2023-12-31 · CVE-2020-16851

Positive Technologies (AI Summary)

CVSS v3.1

7.1

High

Base vector

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

Name of the Vulnerable Software and Affected Versions: OneDrive for Windows Desktop (affected versions not specified)

Description: The issue arises from the improper handling of symbolic links by the OneDrive for Windows Desktop application, leading to a potential elevation of privilege. An attacker, after logging on to the system, could exploit this by running a specially crafted application to overwrite or delete targeted files with elevated status. The estimated number of potentially affected devices worldwide is not provided, and there is no information about real-world incidents where this issue was exploited.

Recommendations: To resolve the issue, apply the update that corrects where the OneDrive updater performs file writes while running with elevation. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

DoS

Link Following

Weakness Enumeration

CWE-59

Related Identifiers

BDU:2020-04419

CVE-2020-16851

Affected Products

Onedrive For Windows Desktop

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2020-16851 · Security Note
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16851 · Vendor Advisory
• https://bdu.fstec.ru/vul/2020-04419 · Security Note