PT-2020-3915 · Microsoft · Windows

Pgboy · Published 2020-09-08 · Updated 2023-12-31 · CVE-2020-0839

Positive Technologies (AI Summary)

CVSS v3.1

7.8

High

Base vector

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

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

Description: The issue is related to errors in handling objects in memory by the dnsrslvr.dll library in the Windows operating system. Exploitation of this issue could allow an attacker to elevate their privileges using a specially crafted application. A locally authenticated attacker could exploit the vulnerability by running such an application, potentially executing code with elevated permissions.

Recommendations: To resolve the issue, apply the security update that ensures the dnsrslvr.dll properly handles objects in memory. At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Buffer Overflow

Weakness Enumeration

CWE-119

Related Identifiers

BDU:2020-04308

CVE-2020-0839

Affected Products

Windows

References · 6

• https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2020-0839 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2020-0839 · Security Note
• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0839 · Vendor Advisory
• https://bdu.fstec.ru/vul/2020-04308 · Security Note
• https://osv.dev/vulnerability/CVE-2020-0839 · Vendor Advisory
• http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-0839 · Security Note