PT-2020-3933 · Microsoft · Windows Dns+1

Quan Luo · Published 2020-08-09 · Updated 2023-12-31 · CVE-2020-0836

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 DNS (affected versions not specified)

Description: A denial of service issue exists due to improper handling of queries. An authenticated attacker can exploit this by sending malicious DNS queries, causing the DNS service to become nonresponsive. The estimated number of potentially affected devices worldwide is not available. There is no information about real-world incidents where this issue was exploited.

Technical details about exploitation include sending malicious DNS queries to a target. No specific API endpoints, vulnerable parameters, or function names are mentioned.

Recommendations: To resolve the issue, apply the update that corrects how Windows DNS processes queries. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

CSRF

Weakness Enumeration

CWE-352

Related Identifiers

BDU:2020-04326

CVE-2020-0836

Affected Products

Windows

Windows Dns

References · 6

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0836 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-0836 · Security Note
• https://osv.dev/vulnerability/CVE-2020-0836 · Vendor Advisory
• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2020-0836 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0836 · Security Note
• https://bdu.fstec.ru/vul/2020-04326 · Security Note