界: Input Validation and Representation
入力の検証や表現の問題は、メタキャラクター、代替エンコーディング、数値表現などによって引き起こされます。セキュリティの問題は、入力を信頼することに起因します。この問題に含まれるのは、「Buffer Overflow」、「Cross-Site Scripting」攻撃、「SQL Injection」などです。
Dynamic Code Evaluation: Unsafe Pickle Deserialization
Abstract
実行時にユーザー制御のデータをデシリアライズすると、攻撃者が任意のコードを実行できる可能性があります。
Explanation
Python の公式ドキュメントに、次のように記載されています。
Pickle は、開発者がオブジェクトを簡単に送信し、それらをカスタム Pickle 表現にシリアライズするための強力なシリアライズ ライブラリです。Pickle を使用すると、任意のオブジェクトで
The pickle module is not intended to be secure against erroneous or maliciously constructed data. Never unpickle data received from an untrusted or unauthenticated source.
Pickle は、開発者がオブジェクトを簡単に送信し、それらをカスタム Pickle 表現にシリアライズするための強力なシリアライズ ライブラリです。Pickle を使用すると、任意のオブジェクトで
__reduce__ メソッドを定義することによってデシリアライズする方法を宣言できます。このメソッドは callable およびその引数を戻します。Pickle は、攻撃者が任意のコマンドを実行することを可能にする、新しいオブジェクトを構築するために指定された引数と一緒に関数を呼び出します。References
[1] Python object serialization Python
[2] Python object serialization Python
[3] Python Library Reference Python
[4] Standards Mapping - Common Weakness Enumeration CWE ID 502
[5] Standards Mapping - Common Weakness Enumeration Top 25 2019 [23] CWE ID 502
[6] Standards Mapping - Common Weakness Enumeration Top 25 2020 [21] CWE ID 502
[7] Standards Mapping - Common Weakness Enumeration Top 25 2021 [13] CWE ID 502
[8] Standards Mapping - Common Weakness Enumeration Top 25 2022 [12] CWE ID 502
[9] Standards Mapping - Common Weakness Enumeration Top 25 2023 [15] CWE ID 502
[10] Standards Mapping - Common Weakness Enumeration Top 25 2024 [16] CWE ID 502
[11] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-001764, CCI-001774, CCI-002754
[12] Standards Mapping - FIPS200 SI
[13] Standards Mapping - General Data Protection Regulation (GDPR) Indirect Access to Sensitive Data
[14] Standards Mapping - NIST Special Publication 800-53 Revision 4 CM-7 Least Functionality (P1), SI-10 Information Input Validation (P1)
[15] Standards Mapping - NIST Special Publication 800-53 Revision 5 CM-7 Least Functionality, SI-10 Information Input Validation
[16] Standards Mapping - OWASP Application Security Verification Standard 4.0 1.5.2 Input and Output Architectural Requirements (L2 L3), 5.5.1 Deserialization Prevention Requirements (L1 L2 L3), 5.5.3 Deserialization Prevention Requirements (L1 L2 L3)
[17] Standards Mapping - OWASP Mobile 2014 M7 Client Side Injection
[18] Standards Mapping - OWASP Mobile 2024 M4 Insufficient Input/Output Validation
[19] Standards Mapping - OWASP Top 10 2004 A6 Injection Flaws
[20] Standards Mapping - OWASP Top 10 2007 A2 Injection Flaws
[21] Standards Mapping - OWASP Top 10 2010 A1 Injection
[22] Standards Mapping - OWASP Top 10 2013 A1 Injection
[23] Standards Mapping - OWASP Top 10 2017 A8 Insecure Deserialization
[24] Standards Mapping - OWASP Top 10 2021 A08 Software and Data Integrity Failures
[25] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 6.5.6
[26] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 6.3.1.1, Requirement 6.5.2
[27] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 6.5.1
[28] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 6.5.1
[29] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 6.5.1
[30] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 6.5.1
[31] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 6.5.1
[32] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 6.2.4
[33] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 6.2.4
[34] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 4.2 - Critical Asset Protection
[35] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation
[36] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 4.2 - Critical Asset Protection, Control Objective B.3.1 - Terminal Software Attack Mitigation, Control Objective B.3.1.1 - Terminal Software Attack Mitigation, Control Objective C.3.2 - Web Software Attack Mitigation, Control Objective C.3.5 - Web Software Attack Mitigation
[37] Standards Mapping - SANS Top 25 2009 Insecure Interaction - CWE ID 116
[38] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3510 CAT I, APP3570 CAT I
[39] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3510 CAT I, APP3570 CAT I
[40] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3510 CAT I, APP3570 CAT I
[41] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3510 CAT I, APP3570 CAT I
[42] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3510 CAT I, APP3570 CAT I
[43] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3510 CAT I, APP3570 CAT I
[44] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3510 CAT I, APP3570 CAT I
[45] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002560 CAT I
[46] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002560 CAT I
[47] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002560 CAT I
[48] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002560 CAT I
[49] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002560 CAT I
[50] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002560 CAT I
[51] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002560 CAT I
[52] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002560 CAT I
[53] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002560 CAT I
[54] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002560 CAT I
[55] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002560 CAT I
[56] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002560 CAT I
[57] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002560 CAT I
[58] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002530 CAT II, APSC-DV-002560 CAT I
[59] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-001480 CAT II, APSC-DV-001490 CAT II, APSC-DV-002530 CAT II, APSC-DV-002560 CAT I
[60] Standards Mapping - Web Application Security Consortium Version 2.00 Improper Input Handling (WASC-20)
desc.dataflow.python.dynamic_code_evaluation_unsafe_pickle_deserialization