(Pwn2Own) Samsung Galaxy S9 GameServiceReceiver Unsafe Updates Validation Remote Code Execution Vulnerability

March 5th, 2019
ZDI-19-255 ZDI-CAN-7477

CVE ID

CVE-2019-6742

CVSS Score

10.0 AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Affected Vendors

Samsung

Affected Products

Galaxy S9

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on vulnerable installations of Samsung Galaxy S9. Authentication is not required to exploit this vulnerability.

The specific flaw exists within the handling of the GameServiceReceiver update mechanism. An attacker can leverage this vulnerability to execute code in the context of the current process.

Additional Details

Fixed in version 1.4.20.2 or above


Disclosure Timeline

  • 2018-11-15 - Vulnerability reported to vendor
  • 2019-03-05 - Coordinated public release of advisory
  • 2019-06-14 - Advisory Updated

Credit

MWR Labs - Georgi Geshev and Robert Miller

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