High severity7.4NVD Advisory· Published Dec 23, 2021· Updated Jun 17, 2026
CVE-2021-44273
CVE-2021-44273
Description
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.
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Affected products
1- e2guardian/e2guardiandescription
Patches
Vulnerability mechanics
References
4- github.com/e2guardian/e2guardian/commit/eae46a7e2a57103aadca903c4a24cca94dc502a2nvdPatchThird Party Advisory
- github.com/e2guardian/e2guardian/issues/707nvdExploitIssue TrackingPatchThird Party Advisory
- www.openwall.com/lists/oss-security/2021/12/23/2nvdMailing ListThird Party Advisory
- lists.debian.org/debian-lts-announce/2023/09/msg00010.htmlnvd
News mentions
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