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    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.

    Published:Dec 23, 2021
    Last Modified:Nov 21, 2024
    EPS:Dec 23, 2021
    EPSS Score:0.00169
    CVSS Score:7.4

    Affected Products

    Vendor
    E2bn
    Product
    E2guardian

    Exploits

    https://github.com/e2guardian/e2guardian/issues/707https://github.com/e2guardian/e2guardian/issues/707

    Common Weakness Enumeration

    CWE-295 Improper Certificate Validation

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High