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Insecure service configuration - Task Hijacking

Description​

One of the activities in the application manifest is configured with launchMode=singleTask, this configuration is insecure because it opens the possibility that the application is vulnerable to Task Hijacking.

Impact​

  • Mislead the user with a malicious application that impersonates the applications functionalities.
  • Install malicious application on the application users device.

Recommendation​

Configure the launchMode with the singleInstance option.

Threat​

Unauthorized user with access to the application.

Expected Remediation Time​

⌚ 60 minutes.

Score​

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

Base​

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

Temporal​

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

Result​

  • Vector string: CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:N/E:P/RL:O/RC:X
  • Score:
    • Base: 3.6
    • Temporal: 3.3
  • Severity:
    • Base: Low
    • Temporal: Low

Score 4.0​

Default score using CVSS 4.0 . It may change depending on the context of the src.

Base 4.0​

  • Attack vector: L
  • Attack complexity: H
  • Attack Requirements: N
  • Privileges required: N
  • User interaction: A
  • Confidentiality (VC): L
  • Integrity (VI): L
  • Availability (VA): N
  • Confidentiality (SC): N
  • Integrity (SI): N
  • Availability (SA): N

Threat 4.0​

  • Exploit maturity: P

Result 4.0​

  • Vector string: CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:A/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:P
  • Score:
    • CVSS-BT: 0.9
  • Severity:
    • CVSS-BT: Low

Compliant code​

The application manifest correctly configures launchMode to singleInstance

<manifest ... >
  ...
  <application android:launchMode="singleInstance" ... >
      ...
  </application>
</manifest>

Non compliant code​

The application manifest allows launchMode with the singletask Option

<manifest ... >
  ...
  <application android:launchMode="singleTask" ... >
      ...
  </application>
</manifest>

Requirements​

Fixes​

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