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Published: 23 December 2021

e2guardian v5.4.x <= v5.4.3r is affected by missing SSL certificate validation in the SSL MITM engine. In standalone mode (i.e., acting as a proxy or a transparent proxy), with SSL MITM enabled, e2guardian, if built with OpenSSL v1.1.x, did not validate hostnames in certificates of the web servers that it connected to, and thus was itself vulnerable to MITM attacks.



CVSS 3 base score: 7.4


Package Release Status
Launchpad, Ubuntu, Debian
bionic Needs triage

focal Needs triage

hirsute Ignored
(reached end-of-life)
impish Needs triage

jammy Needs triage

trusty Ignored
(out of standard support)
upstream Needs triage

xenial Ignored
(out of standard support)