Information Exposure Affecting bpftool package, versions <0:4.18.0-372.9.1.el8


Severity

Recommended
high

Based on CentOS security rating.

Threat Intelligence

EPSS
0.65% (80th percentile)

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  • Snyk IDSNYK-CENTOS8-BPFTOOL-1972453
  • published21 Sept 2021
  • disclosed8 Sept 2021

Introduced: 8 Sep 2021

CVE-2021-3773  (opens in a new tab)
CWE-200  (opens in a new tab)

How to fix?

Upgrade Centos:8 bpftool to version 0:4.18.0-372.9.1.el8 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream bpftool package and not the bpftool 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.

CVSS Scores

version 3.1