Allele Security Alert
ASA-2019-00545
Identifier(s)
ASA-2019-00545, CVE-2019-14220, BS-2019-002
Title
Arbitrary File Read with System admin privilege
Vendor(s)
Bluestack Systems, Inc
Product(s)
BlueStacks
Affected version(s)
BlueStacks running on Windows: version 4.120 and below
BlueStacks running on MacOS: version 4.110 and below
Fixed version(s)
BlueStacks version 4.130
Proof of concept
Unknown
Description
BlueStacks employs Android running in a virtual machine (VM) to enable Android apps to run on Windows or MacOS.
Bug is in a local arbitrary file read through a system service call. The impacted method runs with System admin privilege and if given the file name as parameter returns you the content of file. A malicious app using the affected method can then read the content of any system file which it is not authorized to read.
Technical details
Unknown
Credits
Maciej Miszczyk (Seqred.pl)
Reference(s)
BlueStacks fails to restrict access permissions – BlueStacks Support
https://support.bluestacks.com/hc/en-us/articles/360033484132-BlueStacks-fails-to-restrict-access-permissions
Release Notes
https://support.bluestacks.com/hc/en-us/articles/360021469391-Release-Notes
CVE-2019-14220
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-14220
CVE-2019-14220
https://nvd.nist.gov/vuln/detail/CVE-2019-14220
If there is any error in this alert or you wish a comprehensive analysis, let us know.
Last modified: September 25, 2019