Reino: Security Features

Segurança de software não é o mesmo que software de segurança. Aqui, estamos interessados em tópicos como autenticação, controle de acesso, confidencialidade, criptografia e gestão de privilégios.

Privacy Violation: Android Insecure Indexing

Java/JSP

Abstract

Cria um índice de pesquisa de documentos privados ou confidenciais, que podem comprometer a privacidade do usuário.

Explanation

A indexação insegura ameaça a confidencialidade dos dados dos sites e aplicativos móveis que permitem a indexação para pesquisa de texto completo eficiente, incluindo dados privados ou confidenciais em documentos indexados pelo mecanismo de pesquisa do Android, o que pode resultar em vazamento de informações sobre a existência e o conteúdo dos dados. No processo de indexação, as informações são coletadas e armazenadas. Posteriormente, um invasor pode recuperar essas informações (embora não de maneira trivial), geralmente por meio de uma série de consultas ao recurso de pesquisa em um dispositivo móvel Android.

A biblioteca AppSearch, uma solução de pesquisa no dispositivo Android de alto desempenho, é um exemplo típico de indexação de dados, especialmente quando um determinado aplicativo contribui para um índice central de todo o sistema no dispositivo, chamado de armazenamento de plataforma. O acesso aos dados no índice central é restrito aos dados com os quais o aplicativo contribuiu e aos dados que foram explicitamente compartilhados por outro aplicativo por meio da concessão de permissão apropriada. Se um determinado documento confidencial for indexado por engano ou acidentalmente usando esse processo, isso poderá levar a uma violação de privacidade por permitir que esse documento seja pesquisado.

Exemplo 1: O código a seguir mostra um exemplo de como um documento privado é indexado no Android usando a biblioteca AppSearch. Esse documento contém dados privados que devem estar ocultos do processo de indexação e não podem ser acessados pelo código do AppSearch.



...
// Document object to index
val doc = Doc(
    namespace="user1",
    id="noteId",
    score=10,
    text="This document contains private data"
)
// Adding document object to AppSearch index
val putRequest = PutDocumentsRequest.Builder().addDocuments(doc).build()

References

[1] L. Gong, G. Ellison, and M. Dageforde Inside Java 2 Platform Security: Architecture, API Design, and Implementation, 2nd ed. Addison-Wesley

[2] M. S. Ware Writing secure Java code: taxonomy of heuristics and an evaluation of static analysis tools

[3] CONFIDENTIAL-3: Consider purging highly sensitive from memory after use Oracle

[4] The Insecure Indexing Vulnerability: Attacks Against Local Search Engines Web Application Security Consortium

[5] Standards Mapping - Common Weakness Enumeration CWE ID 359

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

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

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

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

[10] Standards Mapping - DISA Control Correlation Identifier Version 2 CCI-000196, CCI-001312, CCI-001314, CCI-002475

[11] Standards Mapping - General Data Protection Regulation (GDPR) Privacy Violation

[12] Standards Mapping - NIST Special Publication 800-53 Revision 4 AC-4 Information Flow Enforcement (P1), IA-5 Authenticator Management (P1), SC-28 Protection of Information at Rest (P1), SI-11 Error Handling (P2)

[13] Standards Mapping - NIST Special Publication 800-53 Revision 5 AC-4 Information Flow Enforcement, IA-5 Authenticator Management, SC-28 Protection of Information at Rest, SI-11 Error Handling

[14] Standards Mapping - OWASP Application Security Verification Standard 4.0 8.2.2 Client-side Data Protection (L1 L2 L3), 8.3.4 Sensitive Private Data (L1 L2 L3), 10.2.1 Malicious Code Search (L2 L3)

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

[16] Standards Mapping - OWASP Mobile 2024 M6 Inadequate Privacy Controls

[17] Standards Mapping - OWASP Mobile Application Security Verification Standard 2.0 MASVS-STORAGE-2

[18] Standards Mapping - OWASP Top 10 2004 A8 Insecure Storage

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

[20] Standards Mapping - OWASP Top 10 2013 A6 Sensitive Data Exposure

[21] Standards Mapping - OWASP Top 10 2017 A3 Sensitive Data Exposure

[22] Standards Mapping - OWASP Top 10 2021 A02 Cryptographic Failures

[23] Standards Mapping - Payment Card Industry Data Security Standard Version 1.1 Requirement 3.2, Requirement 3.4, Requirement 4.2, Requirement 8.4

[24] Standards Mapping - Payment Card Industry Data Security Standard Version 1.2 Requirement 3.2, Requirement 3.4, Requirement 4.2, Requirement 6.5.6, Requirement 8.4

[25] Standards Mapping - Payment Card Industry Data Security Standard Version 2.0 Requirement 3.2, Requirement 3.4, Requirement 4.2, Requirement 6.5.5, Requirement 8.4

[26] Standards Mapping - Payment Card Industry Data Security Standard Version 3.0 Requirement 3.2, Requirement 3.4, Requirement 4.2, Requirement 8.2.1

[27] Standards Mapping - Payment Card Industry Data Security Standard Version 3.1 Requirement 3.2, Requirement 3.4, Requirement 4.2, Requirement 8.2.1

[28] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2 Requirement 3.2, Requirement 3.4, Requirement 4.2, Requirement 8.2.1

[29] Standards Mapping - Payment Card Industry Data Security Standard Version 3.2.1 Requirement 3.2, Requirement 3.4, Requirement 4.2, Requirement 8.2.1

[30] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0 Requirement 3.3.1, Requirement 3.5.1, Requirement 4.2.2, Requirement 8.3.1

[31] Standards Mapping - Payment Card Industry Data Security Standard Version 4.0.1 Requirement 3.3.1, Requirement 3.3.2, Requirement 3.3.3, Requirement 3.5.1, Requirement 4.2.2, Requirement 8.3.1

[32] Standards Mapping - Payment Card Industry Software Security Framework 1.0 Control Objective 3.3 - Sensitive Data Retention, Control Objective 6.1 - Sensitive Data Protection, Control Objective 7 - Use of Cryptography

[33] Standards Mapping - Payment Card Industry Software Security Framework 1.1 Control Objective 3.3 - Sensitive Data Retention, Control Objective 6.1 - Sensitive Data Protection, Control Objective 7 - Use of Cryptography

[34] Standards Mapping - Payment Card Industry Software Security Framework 1.2 Control Objective 3.3 - Sensitive Data Retention, Control Objective 6.1 - Sensitive Data Protection, Control Objective 7 - Use of Cryptography

[35] Standards Mapping - SANS Top 25 2010 Porous Defenses - CWE ID 311

[36] Standards Mapping - SANS Top 25 2011 Porous Defenses - CWE ID 311

[37] Standards Mapping - Security Technical Implementation Guide Version 3.1 APP3210.1 CAT II, APP3310 CAT I, APP3340 CAT I

[38] Standards Mapping - Security Technical Implementation Guide Version 3.4 APP3210.1 CAT II, APP3340 CAT I

[39] Standards Mapping - Security Technical Implementation Guide Version 3.5 APP3210.1 CAT II, APP3340 CAT I

[40] Standards Mapping - Security Technical Implementation Guide Version 3.6 APP3210.1 CAT II, APP3340 CAT I

[41] Standards Mapping - Security Technical Implementation Guide Version 3.7 APP3210.1 CAT II, APP3340 CAT I

[42] Standards Mapping - Security Technical Implementation Guide Version 3.9 APP3210.1 CAT II, APP3340 CAT I

[43] Standards Mapping - Security Technical Implementation Guide Version 3.10 APP3210.1 CAT II, APP3340 CAT I

[44] Standards Mapping - Security Technical Implementation Guide Version 4.2 APSC-DV-001740 CAT I, APSC-DV-002340 CAT II, APSC-DV-002570 CAT II, APSC-DV-002580 CAT II

[45] Standards Mapping - Security Technical Implementation Guide Version 4.3 APSC-DV-001740 CAT I, APSC-DV-002340 CAT II, APSC-DV-002570 CAT II, APSC-DV-002580 CAT II

[46] Standards Mapping - Security Technical Implementation Guide Version 4.4 APSC-DV-001740 CAT I, APSC-DV-002340 CAT II, APSC-DV-002570 CAT II, APSC-DV-002580 CAT II

[47] Standards Mapping - Security Technical Implementation Guide Version 4.5 APSC-DV-001740 CAT I, APSC-DV-002340 CAT II, APSC-DV-002570 CAT II, APSC-DV-002580 CAT II

[48] Standards Mapping - Security Technical Implementation Guide Version 4.6 APSC-DV-001740 CAT I, APSC-DV-002340 CAT II, APSC-DV-002570 CAT II, APSC-DV-002580 CAT II

[49] Standards Mapping - Security Technical Implementation Guide Version 4.7 APSC-DV-001740 CAT I, APSC-DV-002340 CAT II, APSC-DV-002570 CAT II, APSC-DV-002580 CAT II

[50] Standards Mapping - Security Technical Implementation Guide Version 4.8 APSC-DV-001740 CAT I, APSC-DV-002340 CAT II, APSC-DV-002570 CAT II, APSC-DV-002580 CAT II

[51] Standards Mapping - Security Technical Implementation Guide Version 4.9 APSC-DV-001740 CAT I, APSC-DV-002340 CAT II, APSC-DV-002570 CAT II, APSC-DV-002580 CAT II

[52] Standards Mapping - Security Technical Implementation Guide Version 4.10 APSC-DV-001740 CAT I, APSC-DV-002340 CAT II, APSC-DV-002570 CAT II, APSC-DV-002580 CAT II

[53] Standards Mapping - Security Technical Implementation Guide Version 4.11 APSC-DV-001740 CAT I, APSC-DV-002340 CAT II, APSC-DV-002570 CAT II, APSC-DV-002580 CAT II

[54] Standards Mapping - Security Technical Implementation Guide Version 4.1 APSC-DV-001740 CAT I, APSC-DV-002340 CAT II, APSC-DV-002570 CAT II, APSC-DV-002580 CAT II

[55] Standards Mapping - Security Technical Implementation Guide Version 5.1 APSC-DV-001740 CAT I, APSC-DV-002340 CAT II, APSC-DV-002570 CAT II, APSC-DV-002580 CAT II

[56] Standards Mapping - Security Technical Implementation Guide Version 5.2 APSC-DV-001740 CAT I, APSC-DV-002340 CAT II, APSC-DV-002570 CAT II, APSC-DV-002580 CAT II

[57] Standards Mapping - Security Technical Implementation Guide Version 5.3 APSC-DV-001740 CAT I, APSC-DV-002340 CAT II, APSC-DV-002570 CAT II, APSC-DV-002580 CAT II

[58] Standards Mapping - Security Technical Implementation Guide Version 6.1 APSC-DV-001740 CAT I, APSC-DV-002340 CAT II, APSC-DV-002570 CAT II, APSC-DV-002580 CAT II

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

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

desc.dataflow.java.privacy_violation_android_insecure_indexing