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Weakness (CWE)

CWE-656: Reliance on Security Through Obscurity

Class Draft

The product uses a protection mechanism whose strength depends heavily on its obscurity, such that knowledge of its algorithms or key data is sufficient to defeat the mechanism.

How to prevent it (3 mitigations)
  1. Architecture and Design

    Always consider whether knowledge of your code or design is sufficient to break it. Reverse engineering is a highly successful discipline, and financially feasible for motivated adversaries. Black-box techniques are established for binary analysis of executables that use obfuscation, runtime analysis of proprietary protocols, inferring file formats, and others.

  2. Architecture and Design

    When available, use publicly-vetted algorithms and procedures, as these are more likely to undergo more extensive security analysis and testing. This is especially the case with encryption and authentication.

  3. Architecture and Design

    Obscurity can be one small part of defense
    in depth, since it can create more work for an
    attacker; however, it is a significant risk if used as
    the primary means of protection.

Source: MITRE CWE-656

12 results · Feed

  • Medium 6.9

    Captcha Bypass in extension "Accessible Form Captcha" (bw_captcha)

    The extension hides the correct answer to each CAPTCHA inside the image data of the CAPTCHA itself. Anyone who can request a CAPTCHA image can read the answer from it and submit it, so automated clients can pass the challenge. This applies to the default conf…

  • Critical 9.3

    GeoVision GV-IP Device Utility Device Authentication insufficient encryption vulnerability

    An insufficient encryption vulnerability exists in the Device Authentication functionality of GeoVision GV-IP Device Utility 9.0.5. Listening to broadcast packets can lead to credentials leak. An attacker can listen to broadcast messages to trigger this vulne…

  • Critical 9.3

    GeoVision GV-IP Device Utility Device Authentication insufficient encryption vulnerability

    An insufficient encryption vulnerability exists in the Device Authentication functionality of GeoVision GV-IP Device Utility 9.0.5. Listening to broadcast packets can lead to credentials leak. An attacker can listen to broadcast messages to trigger this vulne…

  • High 8.5

    Insecure Password Derivation Function for Database Administrator in dormakaba Kaba exos 9300

    Exos 9300 instances are using a randomly generated database password to connect to the configured MSSQL server. The password is derived from static random values, which are concatenated to the hostname and a random string that can be read by every user from t…

  • Medium 5.1

    BYD DiLink OS Incorrect encryption Implementation of system log dumps

    An incorrect encryption implementation vulnerability exists in the system log dump feature of BYD's DiLink 3.0 OS (e.g. in the model ATTO3). An attacker with physical access to the vehicle can bypass the encryption of log dumps on the In-Vehicle Infotainment …

  • Low 3.4

    An issue in Macro-video Technologies Co.,Ltd V380 Pro android application 2.1.44 and V380 Pro android application 2.1.6…

  • Critical 9.2

    Frontend Authorization Logic Disclosure Vulnerability

    Moxa’s Ethernet switch is vulnerable to an authentication bypass because of flaws in its authorization mechanism. Although both client-side and back-end server verification are involved in the process, attackers can exploit weaknesses in its implementation. T…

  • High 7.2

    Privilege Escalation in Cellular Router, Secure Router, and Network Security Appliances

    Moxa’s cellular routers, secure routers, and network security appliances are affected by a high-severity vulnerability, CVE-2024-9138. This vulnerability involves hard-coded credentials, enabling an authenticated user to escalate privileges and gain root-leve…

  • Medium 5.0

    TP-Link Omada ER605 Reliance on Security Through Obscurity Vulnerability

    TP-Link Omada ER605 Reliance on Security Through Obscurity Vulnerability. This vulnerability allows network-adjacent attackers to access or spoof DDNS messages on affected installations of TP-Link Omada ER605 routers. Authentication is not required to exploit…

  • Critical 9.4

    RVD#3323: Mismanaged permission implementation leads to privilege escalation, exfiltration of sensitive information, and DoS

    the main user account has restricted privileges but is in the sudoers group and there is not any mechanism in place to prevent sudo su or sudo -i to be run gaining unrestricted access to sensible files, encryption, or issue orders that disrupt robot operation.

  • Critical 9.1

    RVD#3321: No Authentication required to exert manual control of the robot

    No authentication is required to control the robot inside the network, moreso the latest available user manual shows an option that lets the user to add a password to the robot but as in xarm_studio 1.3.0 the option is missing from the menu. Assuming manual c…

  • Medium 6.4

    RVD#2562: Booting from a live image leads to exfiltration of sensible information and privilege escalation

    There is no mechanism in place to prevent a bad operator to boot from a live OS image, this can lead to extraction of sensible files (such as the shadow file) or privilege escalation by manually adding a new user with sudo privileges on the machine.