CVE Vulnerability

CVE-2021-44273

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.

5.8 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 8.6 / Impact : 4.9

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact NONE

Scope

7.4 /10

CVSS v3.0 : HIGH

V3 Legend

Vector :

Exploitability : 2.2 / Impact : 5.2

Attack Vector NETWORK

Attack Complexity HIGH

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References
Link Resource
https://github.com/e2guardian/e2guardian/issues/707 Exploit Issue Tracking
https://github.com/e2guardian/e2guardian/commit/eae46a7e2a57103aadca903c4a24cca94dc502a2 Patch Third Party Advisory
http://www.openwall.com/lists/oss-security/2021/12/23/2 Mailing List Third Party Advisory
Configurations

Configuration 1

cpe:2.3:a:e2bn:e2guardian:*:*:*:*:*:*:*:*
Information

Published : 2021-12-23 12:15

Updated : 2022-01-11 05:50

NVD link : CVE-2021-44273

Mitre link : CVE-2021-44273

Products Affected
No products.
CWE
CWE-295

Improper Certificate Validation