attack-tree.md

Attack Tree Analysis for xianyi/openblas

Objective: Attacker Achieves ACE or DoS via OpenBLAS (Focus on ACE)

Attack Tree Visualization

                                 +-------------------------------------------------+
                                 |  Attacker Achieves ACE or DoS via OpenBLAS   |
                                 +-------------------------------------------------+
                                                 |
     +------------------------------------------------------------------------------------------------+
     |                                                                                                |

+---------------------+ [CN] +---------------------+ | Exploit Buffer | | Exploit Integer | | Overflow in | | Overflow/Underflow | | OpenBLAS Function | | in OpenBLAS | +---------------------+ +---------------------+ | | +--------+--------+ [HR] +--------+--------+ | Find | Craft | | Find | Craft | | Known | Mal- | | Known | Mal- | | CVE | formed| [HR] | CVE | formed| | [CN] | Input | | | Input | +--------+--------+ +--------+--------+ | | +--------+--------+ [HR] +--------+--------+ | Trig- | Find | | Trig- | Find | | ger | Un- | | ger | Un- | | BO via| sani- | | IO via| sani- | | API | tized | | API | tized | | Call | /Unval-| [CN] | Call | /Unval-| | [CN] | Input | | | Input | +--------+--------+ +--------+--------+

Attack Tree Path: Exploit Buffer Overflow in OpenBLAS Function [CN]

• Description: This is the primary attack vector, focusing on exploiting buffer overflow vulnerabilities in OpenBLAS functions to achieve arbitrary code execution.
• High-Risk Path:
  • Find Known CVE [CN]:
    • Description: The attacker searches public vulnerability databases (like NVD, MITRE CVE) for known buffer overflow vulnerabilities in the specific version of OpenBLAS used by the application.
    • Likelihood: Medium
    • Impact: Very High (ACE)
    • Effort: Low (searching databases)
    • Skill Level: Intermediate (understanding CVE descriptions)
    • Detection Difficulty: Medium (IDS/IPS might detect known exploit patterns)
  • Craft Malformed Input [HR]:
    • Description: Based on the information from the CVE, the attacker crafts specific input data (matrices, vectors, parameters) designed to trigger the buffer overflow when processed by the vulnerable OpenBLAS function.
    • Likelihood: High (if CVE is known)
    • Impact: Very High (ACE)
    • Effort: Medium (understanding the vulnerability details)
    • Skill Level: Intermediate
    • Detection Difficulty: Medium
  • Trigger BO via API Call [CN]:
    • Description: The attacker delivers the crafted input to the application, causing it to call the vulnerable OpenBLAS function with the malicious data. This triggers the buffer overflow.
    • Likelihood: High (assuming the application uses the vulnerable function)
    • Impact: Very High (ACE)
    • Effort: Low (calling the function)
    • Skill Level: Intermediate (understanding the application's API)
    • Detection Difficulty: Medium
  • Find Unsanitized/Unvalidated Input [CN]:
    • Description: The attacker identifies input parameters within the application that are passed directly or indirectly to OpenBLAS functions without proper size or type checking. This is a critical vulnerability in the application, not OpenBLAS itself.
    • Likelihood: Medium (depends on application security)
    • Impact: Very High (enables the exploit)
    • Effort: Medium (code review or dynamic analysis)
    • Skill Level: Intermediate
    • Detection Difficulty: Medium

Attack Tree Path: Exploit Integer Overflow/Underflow in OpenBLAS

• Description: This attack vector focuses on exploiting integer overflow or underflow vulnerabilities within OpenBLAS. While often less directly exploitable than buffer overflows, they can lead to memory corruption or incorrect calculations that can be further leveraged.
• High-Risk Path (Similar to Buffer Overflow): * Find Known CVE:
  • Description: Search for known integer overflow/underflow vulnerabilities in the specific OpenBLAS version.
  • Likelihood: Low
  • Impact: High
  • Effort: Low
  • Skill Level: Intermediate
  • Detection Difficulty: Medium * Craft Malformed Input:
  • Description: Design input to trigger the integer overflow/underflow.
  • Likelihood: Medium
  • Impact: High
  • Effort: Medium
  • Skill Level: Intermediate
  • Detection Difficulty: Medium * Trigger IO via API Call:
  • Description: Deliver the crafted input to trigger the vulnerability via an API call.
  • Likelihood: High
  • Impact: High
  • Effort: Low
  • Skill Level: Intermediate
  • Detection Difficulty: Medium * Find Unsanitized/Unvalidated Input:
  • Description: Identify application inputs that are passed to OpenBLAS without proper range checks for integer values.
  • Likelihood: Medium
  • Impact: High
  • Effort: Medium
  • Skill Level: Intermediate
  • Detection Difficulty: Medium