Information disclosure in Linux kernel - CVE-2021-3773
Published: June 2, 2022 / Updated: July 19, 2024
Vulnerability identifier: #VU63920
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/U:Green
CVE-ID: CVE-2021-3773
CWE-ID: CWE-200
Exploitation vector: Remote access
Exploit availability:
Public exploit is available
Vendor: Linux Foundation
Affected software:
Linux kernel
Linux kernel
Detailed vulnerability description
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to excessive data output in the netfilter. A remote attacker can infer openvpn connection endpoint informationand gain unauthorized access to sensitive information on the system.
How to mitigate CVE-2021-3773
Install updates from vendor's website.