Skip to content

Latest commit

 

History

History
112 lines (96 loc) · 9.14 KB

attack-tree.md

File metadata and controls

112 lines (96 loc) · 9.14 KB

Attack Tree Analysis for tencent/mmkv

Objective: Compromise application using MMKV by exploiting MMKV-specific vulnerabilities.

Attack Tree Visualization

Compromise Application via MMKV Exploitation [CRITICAL NODE - ROOT GOAL] ├───(OR)─ Exploit File System Access Vulnerabilities [HIGH-RISK PATH] │ ├───(AND)─ Predictable MMKV File Location │ │ └───(AND)─ Insufficient File System Permissions │ │ └───(OR)─ Physical Device Access [CRITICAL NODE - HIGH LIKELIHOOD & IMPACT] │ └───(AND)─ MMKV Files Stored on External Storage (If applicable) [HIGH-RISK PATH if applicable] │ └───(AND)─ External Storage World-Readable/Writable [CRITICAL NODE - MISCONFIGURATION] ├───(OR)─ Exploit Lack of Encryption (If Encryption Not Enabled) [CRITICAL NODE & HIGH-RISK PATH - MAJOR VULNERABILITY] │ └───(AND)─ Sensitive Data Stored in MMKV [CRITICAL NODE - DATA AT RISK] │ └───(AND)─ Encryption Not Enabled for MMKV Instance [CRITICAL NODE - DEVELOPER OVERSIGHT] │ └───(AND)─ Gain File System Access │ └─── Read plaintext sensitive data from MMKV files [CRITICAL NODE - DATA BREACH] ├───(OR)─ Exploit Weak Encryption Implementation (If Encryption Enabled) [HIGH-RISK PATH if poorly implemented] │ └───(AND)─ Encryption Enabled for MMKV Instance │ ├───(OR)─ Weak Key Derivation/Storage [HIGH-RISK PATH if poorly implemented] │ │ ├───(AND)─ Predictable Key Derivation Method [CRITICAL NODE - KEY COMPROMISE] │ │ └───(AND)─ Key Stored Insecurely [CRITICAL NODE - KEY COMPROMISE] ├───(OR)─ Exploit Application Logic Vulnerabilities via MMKV Data Manipulation [HIGH-RISK PATH] │ └───(AND)─ Gain Ability to Modify MMKV Data │ └───(AND)─ Application Logic Relies on MMKV Data for Security-Sensitive Operations [CRITICAL NODE - APPLICATION DESIGN FLAW] │ ├───(OR)─ Modify MMKV data to bypass authentication/authorization checks [CRITICAL NODE - AUTHENTICATION BYPASS] │ └───(OR)─ Modify application configuration or control flow via MMKV data [CRITICAL NODE - CONFIGURATION TAMPERING] └───(OR)─ Exploit Backup/Restore Mechanisms (If MMKV data is included in backups) [HIGH-RISK PATH if backups are insecure] └───(AND)─ MMKV Data Included in Application Backups └───(AND)─ Backups Stored Insecurely [CRITICAL NODE - INSECURE BACKUPS]

Attack Tree Path: Compromise Application via MMKV Exploitation [CRITICAL NODE - ROOT GOAL]

  • Attack Vectors: Any successful exploitation of vulnerabilities in MMKV usage leading to unauthorized access or manipulation of application data and functionality.
  • Breakdown: This is the overarching objective. Attackers aim to undermine application security by targeting weaknesses related to MMKV data storage.

Attack Tree Path: Exploit File System Access Vulnerabilities [HIGH-RISK PATH]

  • Attack Vectors: Gaining unauthorized access to the file system where MMKV stores its data files.
  • Breakdown:
    • Physical Device Access [CRITICAL NODE - HIGH LIKELIHOOD & IMPACT]:
      • Attack Vectors:
        • Device theft or loss.
        • Insider threats with physical access.
        • Compromised device security allowing physical access.
      • Breakdown: Direct physical access allows bypassing application-level security and accessing files directly, including MMKV data.
    • External Storage World-Readable/Writable [CRITICAL NODE - MISCONFIGURATION]:
      • Attack Vectors:
        • Developer misconfiguration storing MMKV data on external storage.
        • Incorrect file permission settings on external storage.
      • Breakdown: Storing MMKV data on external storage with weak permissions makes it easily accessible to other applications or users, bypassing application sandboxing.

Attack Tree Path: Exploit Lack of Encryption (If Encryption Not Enabled) [CRITICAL NODE & HIGH-RISK PATH - MAJOR VULNERABILITY]

  • Attack Vectors: Storing sensitive data in MMKV without enabling encryption.
  • Breakdown:
    • Sensitive Data Stored in MMKV [CRITICAL NODE - DATA AT RISK]:
      • Attack Vectors: Application design decisions to store sensitive information in MMKV.
      • Breakdown: If sensitive data is placed in MMKV, it becomes a high-value target for attackers.
    • Encryption Not Enabled for MMKV Instance [CRITICAL NODE - DEVELOPER OVERSIGHT]:
      • Attack Vectors: Developer oversight or intentional decision not to enable encryption.
      • Breakdown: Failure to enable encryption leaves sensitive data vulnerable if file system access is compromised.
    • Read plaintext sensitive data from MMKV files [CRITICAL NODE - DATA BREACH]:
      • Attack Vectors: Successful exploitation of file system access vulnerabilities.
      • Breakdown: Once file system access is achieved, plaintext sensitive data in MMKV files can be directly read, resulting in a data breach.

Attack Tree Path: Exploit Weak Encryption Implementation (If Encryption Enabled) [HIGH-RISK PATH if poorly implemented]

  • Attack Vectors: Using weak key derivation methods or storing encryption keys insecurely.
  • Breakdown:
    • Predictable Key Derivation Method [CRITICAL NODE - KEY COMPROMISE]:
      • Attack Vectors:
        • Using easily reversible algorithms for key derivation.
        • Basing key derivation on predictable device or user information.
      • Breakdown: Weak key derivation allows attackers to reverse engineer the process and reconstruct the encryption key.
    • Key Stored Insecurely [CRITICAL NODE - KEY COMPROMISE]:
      • Attack Vectors:
        • Hardcoding keys in application code.
        • Storing keys in shared preferences or other easily accessible storage.
        • Exposing keys in memory dumps.
      • Breakdown: Insecure key storage makes it easy for attackers to extract the key and bypass encryption.

Attack Tree Path: Exploit Application Logic Vulnerabilities via MMKV Data Manipulation [HIGH-RISK PATH]

  • Attack Vectors: Manipulating MMKV data to exploit flaws in application logic, especially security-sensitive operations.
  • Breakdown:
    • Application Logic Relies on MMKV Data for Security-Sensitive Operations [CRITICAL NODE - APPLICATION DESIGN FLAW]:
      • Attack Vectors: Application design that directly uses MMKV data for critical security decisions without proper validation and security checks.
      • Breakdown: If application security logic depends on MMKV data, manipulating this data can directly compromise security.
    • Modify MMKV data to bypass authentication/authorization checks [CRITICAL NODE - AUTHENTICATION BYPASS]:
      • Attack Vectors:
        • Modifying user credentials stored in MMKV.
        • Tampering with session tokens or authentication flags in MMKV.
      • Breakdown: By altering authentication-related data in MMKV, attackers can bypass login procedures and gain unauthorized access.
    • Modify application configuration or control flow via MMKV data [CRITICAL NODE - CONFIGURATION TAMPERING]:
      • Attack Vectors:
        • Changing application settings or feature flags stored in MMKV.
        • Modifying control flow parameters stored in MMKV.
      • Breakdown: Tampering with configuration data in MMKV can allow attackers to unlock hidden features, bypass restrictions, or alter application behavior for malicious purposes.

Attack Tree Path: Exploit Backup/Restore Mechanisms (If MMKV data is included in backups) [HIGH-RISK PATH if backups are insecure]

  • Attack Vectors: Exploiting insecure backup mechanisms to extract MMKV data.
  • Breakdown:
    • Backups Stored Insecurely [CRITICAL NODE - INSECURE BACKUPS]:
      • Attack Vectors:
        • Unencrypted cloud backups.
        • Weak passwords for backup accounts.
        • Accessible local backups on compromised devices.
      • Breakdown: If backups containing MMKV data are not properly secured, attackers can access and restore these backups to extract the data, even if the application itself has some security measures.