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Red Hat: CVE-2021-3773: lack of port sanity checking in natd and netfilter leads to exploit of OpenVPN clients (Multiple Advisories)

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Red Hat: CVE-2021-3773: lack of port sanity checking in natd and netfilter leads to exploit of OpenVPN clients (Multiple Advisories)

Severity
8
CVSS
(AV:N/AC:L/Au:N/C:P/I:P/A:P)
Published
02/16/2022
Created
05/14/2022
Added
05/13/2022
Modified
03/13/2024

Description

A flaw in netfilter could allow a network-connected attacker to infer openvpn connection endpoint information for further use in traditional network attacks.

Solution(s)

  • redhat-upgrade-kernel
  • redhat-upgrade-kernel-rt

References

  • CVE-2021-3773
  • RHSA-2022:1975
  • RHSA-2022:1988

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