PT-2021-1955 · Microsoft · Windows

Published 2021-01-12 · Updated 2024-10-08 · CVE-2021-1683

Positive Technologies (AI Summary)

CVSS v3.1

5.0

Medium

Base vector

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

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

Description: The issue is related to errors in authorization within the Bluetooth service of Windows operating systems. Exploitation of this issue may allow an attacker to elevate their privileges and gain unauthorized access to protected information. It is associated with an impersonation vulnerability in the Passkey Entry Protocol. For more information, the Bluetooth SIG has released a statement.

Recommendations: To address the vulnerability, apply the software update released by Microsoft, which will fail attempts to pair if the remote device exchanges a public key with the same X coordinate as the locally exchanged public key. As a temporary workaround, consider restricting the use of Bluetooth pairing until a patch is applied. Avoid using the Bluetooth service for sensitive operations until the issue is resolved.

Fix

Incorrect Authorization

Weakness Enumeration

CWE-863

Related Identifiers

BDU:2021-00761

CVE-2021-1683

Affected Products

Windows

References · 10

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-1683 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2021-1683 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2021-1683 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-1683 · Security Note
• https://nvd.nist.gov/vuln/detail/CVE-2021-1683 · Security Note
• https://bdu.fstec.ru/vul/2021-00761 · Security Note
• https://twitter.com/ComputerPunks/status/1843687563305070971 · Twitter Post
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-1683 · Note
• https://twitter.com/windowsforum/status/1843708185053438078 · Twitter Post
• https://t.me/cvenotify/8549 · Telegram Post