CVE Vulnerabilities

CVE-2021-31958

Authentication Bypass by Capture-replay

Published: Jun 08, 2021 | Modified: Nov 21, 2024
CVSS 3.x
8.8
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
CVSS 2.x
6.8 MEDIUM
AV:N/AC:M/Au:N/C:P/I:P/A:P
RedHat/V2
RedHat/V3
Ubuntu
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Windows NTLM Elevation of Privilege Vulnerability

Weakness

A capture-replay flaw exists when the design of the product makes it possible for a malicious user to sniff network traffic and bypass authentication by replaying it to the server in question to the same effect as the original message (or with minor changes).

Affected Software

NameVendorStart VersionEnd Version
Windows_10Microsoft- (including)- (including)
Windows_10Microsoft20h2 (including)20h2 (including)
Windows_10Microsoft21h1 (including)21h1 (including)
Windows_10Microsoft1607 (including)1607 (including)
Windows_10Microsoft1809 (including)1809 (including)
Windows_10Microsoft1909 (including)1909 (including)
Windows_10Microsoft2004 (including)2004 (including)
Windows_7Microsoft–sp1 (including)–sp1 (including)
Windows_8.1Microsoft- (including)- (including)
Windows_rt_8.1Microsoft- (including)- (including)
Windows_server_2008Microsoftr2-sp1 (including)r2-sp1 (including)
Windows_server_2008Microsoftsp2 (including)sp2 (including)
Windows_server_2012Microsoft- (including)- (including)
Windows_server_2012Microsoftr2 (including)r2 (including)
Windows_server_2016Microsoft- (including)- (including)
Windows_server_2016Microsoft20h2 (including)20h2 (including)
Windows_server_2016Microsoft1909 (including)1909 (including)
Windows_server_2016Microsoft2004 (including)2004 (including)
Windows_server_2019Microsoft- (including)- (including)

Potential Mitigations

References