Improper Certificate Validation Affecting e2guardian package, versions <5.3.5-3


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.1% (42nd percentile)

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  • Snyk IDSNYK-DEBIAN13-E2GUARDIAN-5676112
  • published24 Dec 2021
  • disclosed23 Dec 2021

Introduced: 23 Dec 2021

CVE-2021-44273  (opens in a new tab)
CWE-295  (opens in a new tab)

How to fix?

Upgrade Debian:13 e2guardian to version 5.3.5-3 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream e2guardian package and not the e2guardian package as distributed by Debian. See How to fix? for Debian:13 relevant fixed versions and status.

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 Scores

version 3.1