Information Exposure Affecting kernel-rt-modules package, versions <0:4.18.0-372.9.1.rt7.166.el8
Threat Intelligence
EPSS
0.65% (80th
percentile)
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Test your applications- Snyk ID SNYK-CENTOS8-KERNELRTMODULES-1972501
- published 21 Sep 2021
- disclosed 8 Sep 2021
Introduced: 8 Sep 2021
CVE-2021-3773 Open this link in a new tabHow to fix?
Upgrade Centos:8 kernel-rt-modules to version 0:4.18.0-372.9.1.rt7.166.el8 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-rt-modules package and not the kernel-rt-modules package as distributed by Centos.
See How to fix? for Centos:8 relevant fixed versions and status.
A flaw in netfilter could allow a network-connected attacker to infer openvpn connection endpoint information for further use in traditional network attacks.
References
- https://access.redhat.com/security/cve/CVE-2021-3773
- https://access.redhat.com/errata/RHSA-2022:1975
- https://bugzilla.redhat.com/show_bug.cgi?id=2004949
- https://www.oracle.com/security-alerts/cpujul2022.html
- https://citizenlab.ca/2024/07/vulnerabilities-in-vpns-paper-presented-at-the-privacy-enhancing-technologies-symposium-2024/
CVSS Scores
version 3.1