(Pwn2Own) Samsung Q60 Smart QLED TV JavaScript Integer Overflow Remote Code Execution Vulnerability

March 18th, 2020
ZDI-20-314 ZDI-CAN-9645

CVE ID

CVSS Score

8.8 AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected Vendors

Samsung

Affected Products

Q60 Smart QLED TV

Vulnerability Details

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Samsung Q60 Smart QLED TV. User interaction is required to exploit this vulnerability in that the target must visit a malicious page or open a malicious file.

The specific flaw exists within the handling of arrays in JavaScript. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow before writing to memory. An attacker can leverage this to execute code in the context of the current process.

Additional Details

Fixed in version 1351.3


Disclosure Timeline

  • 2019-12-10 - Vulnerability reported to vendor
  • 2020-03-18 - Coordinated public release of advisory

Credit

@fluoroacetate

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