CVSS 3.1
7.4 highCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:NCVE-2021-44273
High (7.4) in e2bn e2guardian. EPSS 1.0% chance of exploitation in the next 30 days.
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.
Severity
- EPSS
- 1.0% chance of exploitation in the next 30 days; higher than 62% of CVEs (scores of 2026-10-31)
- CWE
- CWE-295
- Published
- Modified
- Record from
- the NVD, synced
Affected
- e2bn:e2guardian
References
- http://www.openwall.com/lists/oss-security/2021/12/23/2
- https://github.com/e2guardian/e2guardian/commit/eae46a7e2a57103aadca903c4a24cca94dc502a2
- https://github.com/e2guardian/e2guardian/issues/707
- https://lists.debian.org/debian-lts-announce/2023/09/msg00010.html
- http://www.openwall.com/lists/oss-security/2021/12/23/2