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Weakness (CWE)

CWE-784: Reliance on Cookies without Validation and Integrity Checking in a Security Decision

Variant Draft

The product uses a protection mechanism that relies on the existence or values of a cookie, but it does not properly ensure that the cookie is valid for the associated user.

How to prevent it (4 mitigations)

  1. Architecture and Design

    Avoid using cookie data for a security-related decision.

  2. Implementation

    Perform thorough input validation (i.e.: server side validation) on the cookie data if you're going to use it for a security related decision.

  3. Architecture and Design

    Add integrity checks to detect tampering.

  4. Architecture and Design

    Protect critical cookies from replay attacks, since cross-site scripting or other attacks may allow attackers to steal a strongly-encrypted cookie that also passes integrity checks. This mitigation applies to cookies that should only be valid during a single transaction or session. By enforcing timeouts, you may limit the scope of an attack. As part of your integrity check, use an unpredictable, server-side value that is not exposed to the client.

Source: MITRE CWE-784

All Critical High Medium Low Exploited only Public exploit

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  • Medium 6.5
    CVE-2024-9820

    WP 2FA with Telegram <= 3.0 - Two-Factor Authentication Bypass

    The WP 2FA with Telegram plugin for WordPress is vulnerable to Two-Factor Authentication Bypass in versions up to, and including, 3.0. This is due to the two-factor code being stored in a cookie, which makes it possible to bypass two-factor authentication.

    dueclic AuthPress Web / CMS