Advisory Details

April 16th, 2020

(Pwn2Own) Amazon Echo Show Integer Overflow Remote Code Execution Vulnerability

ZDI-20-537
ZDI-CAN-9644

CVE ID
CVSS SCORE 8.8, AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
AFFECTED VENDORS Amazon
AFFECTED PRODUCTS Echo Show
VULNERABILITY DETAILS

This vulnerability allows remote attackers to execute arbitrary code on affected installations of Amazon Echo Show. 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. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow before allocating a buffer. An attacker can leverage this vulnerability to execute code in the context of the current process.

ADDITIONAL DETAILS

Fixed in version 3523856004


DISCLOSURE TIMELINE
  • 2019-12-10 - Vulnerability reported to vendor
  • 2020-04-16 - Coordinated public release of advisory
CREDIT fluoroacetate
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