Buffer overflow in Cypress Psoc 4
CVE-2019-17061
The Bluetooth Low Energy (BLE) stack implementation on Cypress PSoC 4 through 3.62 devices does not properly restrict the BLE Link Layer header and executes certain memory contents upon receiving a packet with a Link Layer ID (LLID) equal to zero. This allows attackers within radio range to cause deadlocks, cause anomalous behavior in the BLE state machine, or trigger a buffer overflow via a crafted BLE Link Layer frame.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.009 (57.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 58th percentile — 57.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.cypress.com/products/ble-bluetooth (Vendor Advisory)
- asset-group.github.io/disclosures/sweyntooth/ (Third Party Advisory)
- community.cypress.com/thread/53680 (Vendor Advisory)
Frequently asked questions
- What is CVE-2019-17061?
- CVE-2019-17061 is a medium-severity vulnerability in Cypress Psoc 4, classified under Buffer Copy without Checking Size of Input (Classic Buffer Overflow). CVSS score: 6.5/10. Published 2020-02-10.
- How severe is CVE-2019-17061?
- Medium severity. CVSS v3 base score is 6.5 out of 10.
- Is CVE-2019-17061 known to be exploited?
- 6 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.