界: Encapsulation

封裝是要劃定清楚的界限。在網頁瀏覽器中，這可能意味著確保您的行動程式碼不會被其他行動程式碼濫用。在伺服器上，這可能意味著區分經過驗證的資料與未經驗證的資料、區分一個使用者的資料與另一個使用者的資料，或區分允許使用者查看的資料與不允許查看的資料。

System Information Leak: iOS Property List

Objective-C

Abstract

已儲存但未加保護的系統資訊，例如純文字檔案中的裝置 ID，會危及系統安全。顯示系統資料或除錯資訊有助於攻擊者瞭解系統並制訂攻擊計畫。

Explanation

在透過記錄或列印將系統資料或除錯資訊傳送至本機檔案、主控台或螢幕時，會發生內部資訊洩漏。

範例 1：以下 XML 包含關於 plist 檔案中所儲存之裝置的系統資訊。在其他儲存的值中，UDID 金鑰會儲存唯一裝置識別碼。



<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
  <key>systemName</key>
  <string>John's iPhone</string>
  <key>systemInfo</key>
  <dict>
          <key>UDID</key>
          <string>2b6f0cc904d137be2e1730235f5664094b831186</string>
          <key>systemVersion</key>
          <string>4.2</string>
          <key>model</key>
          <string>iPhone</string>
          <key>localizedModel</key>
          <string>iPhone</string>
  </dict>
</dict>
</plist>

Example 1 中的程式碼在裝置上未加保護的 plist 檔案中儲存來自行動裝置的私人使用者資訊。雖然許多開發者信任 plist 檔案是任何及所有資料的安全儲存位置，但不應對其絕對信賴，特別是關係到系統資訊和隱私問題時，因為 plist 檔案可由擁有裝置的任何人讀取。

References

[1] Standards Mapping - Common Weakness Enumeration CWE ID 497

[2] Standards Mapping - Common Weakness Enumeration Top 25 2019 [4] CWE ID 200

[3] Standards Mapping - Common Weakness Enumeration Top 25 2020 [7] CWE ID 200

[4] Standards Mapping - Common Weakness Enumeration Top 25 2021 [20] CWE ID 200

[5] Standards Mapping - Common Weakness Enumeration Top 25 2024 [17] CWE ID 200

[6] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001312, CCI-001314, CCI-002420

[7] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data

[8] Standards Mapping - NIST Special Publication 800-53 Revision 4 AC-4 Information Flow Enforcement (P1), SC-8 Transmission Confidentiality and Integrity (P1), SI-11 Error Handling (P2)

[9] Standards Mapping - NIST Special Publication 800-53 Revision 5 AC-4 Information Flow Enforcement, SC-8 Transmission Confidentiality and Integrity, SI-11 Error Handling

[10] Standards Mapping - OWASP API 2023 API8 Security Misconfiguration

[11] Standards Mapping - OWASP Application Security Verification Standard 4.0 8.3.4 Sensitive Private Data (L1 L2 L3), 14.3.3 Unintended Security Disclosure Requirements (L1 L2 L3)

[12] Standards Mapping - OWASP Mobile 2014 M2 Insecure Data Storage

[13] Standards Mapping - OWASP Mobile 2024 M8 Security Misconfiguration

[14] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-STORAGE-1

[15] Standards Mapping - OWASP Top 10 2007 A6 Information Leakage and Improper Error Handling

[16] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.5.6

[17] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.5

[18] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.5

[19] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.5

[20] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.5

[21] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.5

[22] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4

[23] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4

[24] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 3.6 - Sensitive Data Retention

[25] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 3.6 - Sensitive Data Retention

[26] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 3.6 - Sensitive Data Retention

[27] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3620 CAT II

[28] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3620 CAT II

[29] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3620 CAT II

[30] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3620 CAT II

[31] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3620 CAT II

[32] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3620 CAT II

[33] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3620 CAT II

[34] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-002480 CAT II, APSC-DV-002570 CAT II, APSC-DV-002580 CAT II

[35] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-002480 CAT II, APSC-DV-002570 CAT II, APSC-DV-002580 CAT II

[36] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-002480 CAT II, APSC-DV-002570 CAT II, APSC-DV-002580 CAT II

[37] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-002480 CAT II, APSC-DV-002570 CAT II, APSC-DV-002580 CAT II

[38] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-002480 CAT II, APSC-DV-002570 CAT II, APSC-DV-002580 CAT II

[39] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-002480 CAT II, APSC-DV-002570 CAT II, APSC-DV-002580 CAT II

[40] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-002480 CAT II, APSC-DV-002570 CAT II, APSC-DV-002580 CAT II

[41] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-002480 CAT II, APSC-DV-002570 CAT II, APSC-DV-002580 CAT II

[42] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-002480 CAT II, APSC-DV-002570 CAT II, APSC-DV-002580 CAT II

[43] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-002480 CAT II, APSC-DV-002570 CAT II, APSC-DV-002580 CAT II

[44] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-002480 CAT II, APSC-DV-002570 CAT II, APSC-DV-002580 CAT II

[45] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-002480 CAT II, APSC-DV-002570 CAT II, APSC-DV-002580 CAT II

[46] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-002480 CAT II, APSC-DV-002570 CAT II, APSC-DV-002580 CAT II

[47] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-002480 CAT II, APSC-DV-002570 CAT II, APSC-DV-002580 CAT II

[48] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-002480 CAT II, APSC-DV-002570 CAT II, APSC-DV-002580 CAT II

[49] Standards Mapping - Web Application Security Consortium Version 2.00 Information Leakage (WASC-13)

[50] Standards Mapping - Web Application Security Consortium 24 + 2 Information Leakage

desc.config.objc.system_information_leak_ios_property_list