PT-2020-9816 · Cypress · Cypress Psoc 4 Ble

Published 2020-02-12 · Updated 2022-01-01 · CVE-2019-16336

Positive Technologies (AI Summary)

CVSS v3.1

6.5

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions Cypress PSoC 4 BLE component versions 3.61 and earlier

Description The issue concerns the Bluetooth Low Energy implementation, which improperly handles data channel frames with a payload length larger than the configured link layer maximum RX payload size. This allows attackers within radio range to cause a denial of service, resulting in a crash, by sending a crafted BLE Link Layer frame.

Recommendations For Cypress PSoC 4 BLE component versions 3.61 and earlier, update to a version later than 3.61 to resolve the issue.

Exploit

Fix

Buffer Overflow

Weakness Enumeration

CWE-120

Related Identifiers

CVE-2019-16336

Affected Products

Cypress Psoc 4 Ble

References · 7

• 🔥 https://youtube.com/watch?v=Iw8sIBLWE_w · Exploit
• 🔥 https://asset-group.github.io/disclosures/sweyntooth · Exploit
• https://community.cypress.com/thread/53680 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2019-16336 · Security Note
• https://community.cypress.com/thread/48573 · Vendor Advisory
• https://osv.dev/vulnerability/CVE-2019-16336 · Vendor Advisory
• https://t.me/cvenotify/5248 · Telegram Post