Security controls bypass or absence - Emulator
Description
The application does not have a control that detects if it is being used in an emulator, allowing a wider surface for reverse engineering.
Impact
Apply reverse engineer to the application.
Recommendation
Implement recommended security controls for mobile applications.
Threat
Anonymous attacker from the Internet.
Expected Remediation Time
⌚ 120 minutes.
Score
Default score using CVSS 3.1. It may change depending on the context of the src.
Base
- Attack vector: P
- Attack complexity: L
- Privileges required: N
- User interaction: N
- Scope: U
- Confidentiality: L
- Integrity: N
- Availability: N
Temporal
- Exploit code madurity: X
- Remediation level: O
- Report confidence: X
Result
- Vector string: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:X/RL:O/RC:X
- Score:
- Base: 2.4
- Temporal: 2.3
- 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: P
- Attack complexity: L
- Attack Requirements: N
- Privileges required: N
- User interaction: N
- Confidentiality (VC): L
- Integrity (VI): N
- Availability (VA): N
- Confidentiality (SC): N
- Integrity (SI): N
- Availability (SA): N
Threat 4.0
- Exploit madurity: X
Result 4.0
- Vector string: CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X
- Score:
- CVSS-BT: 2.4
- Severity:
- CVSS-BT: Low
Compliant code
The methods used to check if the app is being run on an emulator should be as strong as possible given current techniques
private boolean isEmulator() {
return (Build.BRAND.startsWith("generic") && Build.DEVICE.startsWith("generic"))
|| Build.FINGERPRINT.startsWith("generic")
|| Build.FINGERPRINT.startsWith("unknown")
|| Build.HARDWARE.contains("goldfish")
|| Build.HARDWARE.contains("ranchu")
|| Build.MODEL.contains("google_sdk")
|| Build.MODEL.contains("Emulator")
|| Build.MODEL.contains("Android SDK built for x86")
|| Build.MANUFACTURER.contains("Genymotion")
|| Build.PRODUCT.contains("sdk_google")
|| Build.PRODUCT.contains("google_sdk")
|| Build.PRODUCT.contains("sdk")
|| Build.PRODUCT.contains("sdk_x86")
|| Build.PRODUCT.contains("sdk_gphone64_arm64")
|| Build.PRODUCT.contains("vbox86p")
|| Build.PRODUCT.contains("emulator")
|| Build.PRODUCT.contains("simulator");
}
Non compliant code
Source code does not sufficiently check if the app is being run on an emulator
private boolean isEmulator() {
return (Build.BRAND.startsWith("generic") && Build.DEVICE.startsWith("generic"))
}
Requirements
- 062.Define standard configurations
- 266.Disable insecure functionalities
- 273.Define a fixed security suite
Fixes
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