PT-2021-2045 · Microsoft · Windows

Published 2021-02-09 · Updated 2024-08-29 · CVE-2021-24086

Positive Technologies (AI Summary)

CVSS v2.0

7.8

High

Base vector

AV:N/AC:L/Au:N/C:N/I:N/A:C

Name of the Vulnerable Software and Affected Versions: Windows versions prior to the fixed version

Description: The issue is related to a Denial of Service vulnerability in the Windows TCP/IP service, which can be exploited to cause a system crash. It is also associated with errors in privilege management in the Windows Event Tracing service. The vulnerability can be exploited by an attacker to cause a denial of service. There is no information about the estimated number of potentially affected devices worldwide or real-world incidents where this issue was exploited.

Recommendations: For Windows versions prior to the fixed version, update to the latest version to resolve the issue. As a temporary workaround, consider restricting access to the vulnerable tcpip.sys module to minimize the risk of exploitation.

Exploit

Fix

RCE

Weakness Enumeration

CWE-20

Related Identifiers

BDU:2021-00892

CVE-2021-24086

Affected Products

Windows

References · 33

• 🔥 https://github.com/0vercl0k/CVE-2021-24086 · Exploit
• https://osv.dev/vulnerability/CVE-2021-24086 · Vendor Advisory
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-24086 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2021-24086 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-24086 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2021-24086 · Security Note
• https://bdu.fstec.ru/vul/2021-00892 · Security Note
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-24086 · Security Note
• https://t.me/cybersecuritytechnologies/3279 · Telegram Post
• https://twitter.com/fletch_ai/status/1823978064826781920 · Twitter Post
• http://packetstormsecurity.com/files/163499/Windows-TCP-IP-Denial-Of-Service.html · Note
• https://twitter.com/fletch_ai/status/1829293072632709315 · Twitter Post
• https://t.me/defcon_news/73916 · Telegram Post
• https://t.me/true_secator/6095 · Telegram Post
• https://t.me/defcon_news/73329 · Telegram Post