界: Code Quality

程式碼品質不佳,會導致無法預料的行為。從使用者的角度來看,這通常表現為可用性不佳。對於攻擊者而言,這提供了以意想不到的方式向系統施加壓力的機會。

Intent Manipulation: Implicit Internal Intent

Abstract
偵測到隱含內部 Intent。隱含的內部 Intent 可能會使系統遭受對內部元件的 man-in-the-middle 樣式攻擊。
Explanation
內部 Intent 使用內部元件定義的自訂動作。隱含 Intent 可以促進從任何指定外部元件呼叫 Intent,而無需了解特定元件。將兩者相結合,會允許應用程式從所需的應用程式內容外部存取指定給特定內部使用的 Intent。

從外部應用程式處理內部 Intent 的能力,可以引發從資訊洩漏、Denial of Service 到遠端程式碼執行等各種不同嚴重程度的 man-in-the-middle 攻擊,具體取決於 Intent 指定之內部動作的能力。

範例 1:以下程式碼使用內部隱含內部 Intent


...
val imp_internal_intent_action = Intent("INTERNAL_ACTION_HERE")
startActivity(imp_internal_intent_action)
...
References
[1] Remediation of Implicit Internal Intent Vulnerability
[2] Standards Mapping - Common Weakness Enumeration CWE ID 99
[3] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001094
[4] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[5] Standards Mapping - NIST Special Publication 800-53 Revision 4 SC-5 Denial of Service Protection (P1)
[6] Standards Mapping - NIST Special Publication 800-53 Revision 5 SC-5 Denial of Service Protection
[7] Standards Mapping - OWASP Top 10 2004 A9 Application Denial of Service
[8] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.1
[9] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.4
[10] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.8
[11] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.8
[12] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.8
[13] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.8
[14] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.8
[15] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[16] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP6080 CAT II
[17] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP6080 CAT II
[18] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP6080 CAT II
[19] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP6080 CAT II
[20] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP6080 CAT II
[21] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP6080 CAT II
[22] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP6080 CAT II
[23] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002400 CAT II
[24] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002400 CAT II
[25] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002400 CAT II
[26] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002400 CAT II
[27] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002400 CAT II
[28] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002400 CAT II
[29] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002400 CAT II
[30] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002400 CAT II
[31] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002400 CAT II
[32] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002400 CAT II
[33] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002400 CAT II
[34] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002400 CAT II
[35] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002400 CAT II
[36] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002400 CAT II
[37] Standards Mapping - Web Application Security Consortium Version 2.00 Denial of Service (WASC-10)
[38] Standards Mapping - Web Application Security Consortium 24 + 2 Denial of Service
desc.controlflow.java.intent_manipulation_implicit_internal_intent