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Insecure service configuration - Certificates

Description​

Due to a misconfiguration of X.509 certificates, the application can accept invalid certificates, making it possible to carry out Man in The Middle attacks.

Impact​

Execute Man-in-the-middle attacks.

Recommendation​

Throw typed exceptions in case of detection of invalid certificates.

Threat​

Atacante sin autorización desde intranet.

Expected Remediation Time​

⌚ 60 minutes.

Score​

Default score using CVSS 3.1. It may change depending on the context of the vulnerability.

Base​

  • Attack vector: A
  • Attack complexity: H
  • Privileges required: N
  • User interaction: R
  • Scope: U
  • Confidentiality: N
  • Integrity: L
  • Availability: N

Temporal​

  • Exploit code madurity: P
  • Remediation level: O
  • Report confidence: X

Result​

  • Vector string: CVSS:3.1/AV:A/AC:H/PR:N/UI:R/S:U/C:N/I:L/A:N/E:P/RL:O/RC:X
  • Score:
    • Base: 2.6
    • Temporal: 2.4
  • Severity:
    • Base: Low
    • Temporal: Low

Code Examples​

Compliant code​

The application manifest is safely configured

<manifest xmlns:android="http://schemas.android.com/apk/res/android" android:compileSdkVersion="31" android:compileSdkVersionCodename="2" minSdkVersion="25" android:installLocation="internalOnly" package="com.example" platformBuildVersionCode="31" platformBuildVersionName="12">

Non compliant code​

The application manifest misconfigures the allowed certificates

<manifest xmlns:android="http://schemas.android.com/apk/res/android" android:compileSdkVersion="17" android:compileSdkVersionCodename="20" minSdkVersion="17" android:installLocation="internalOnly" package="com.example" platformBuildVersionCode="31" platformBuildVersionName="12">

Requirements​

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