BlueStacks App Player fails to restrict access permissions


BlueStacks App Player fails to restrict access permissions (CWE-284).

Masaki Kubo and Yoshiki Mori of Cybersecurity Laboratory, National Institute of Information and Communications Technology reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.
CVSS Severity (What is CVSS?)

CVSS V3 Severity:
Base Metrics 6.3 (Medium) [IPA Score]
  • Attack Vector: Adjacent Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
  • Confidentiality Impact: Low
  • Integrity Impact: Low
  • Availability Impact: Low
CVSS V2 Severity:
Base Metrics 5.8 (Medium) [IPA Score]
  • Access Vector: Adjacent Network
  • Access Complexity: Low
  • Authentication: None
  • Confidentiality Impact: Partial
  • Integrity Impact: Partial
  • Availability Impact: Partial
Affected Products

  • BlueStacks App Player for Windows 3.0.0 to 4.31.55
  • BlueStacks App Player for macOS 2.0.0 and later


A user with access to the network that is connected to the affected product may gain unauthorized access.

[Update the Software]
Windows users should update to the latest version of software according to the information provided by the developer.

[Apply Workarounds]
macOS users should apply the following workarounds to mitigate the effects of this vulnerability.
* Do not connect BlueStacks installed machine to the network
* Block access from outside to 5555/TCP
Vendor Information

CWE (What is CWE?)

  1. Improper Access Control(CWE-284) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2018-0701

  1. JVN : JVN#60702986
  2. National Vulnerability Database (NVD) : CVE-2018-0701
Revision History

  • [2018/10/24]
      Web page was published
  • [2019/08/27]
      References : Content was added