Buffer overflow in Zephyrproject Zephyr
CVE-2020-10021
Out-of-bounds Write in the USB Mass Storage memoryWrite handler with unaligned Sizes See NCC-ZEP-024, NCC-ZEP-025, NCC-ZEP-026 This issue affects: zephyrproject-rtos zephyr version 1.14.1 and later versions. version 2.1.0 and later versions.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.004 (32.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 33rd percentile — 32.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- Zephyrproject Zephyr
- Zephyrproject-Rtos Zephyr — versions 1.14.1, 2.1.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- zephyrprojectsec.atlassian.net/browse/ZEPSEC-26 (Third Party Advisory)
- github.com/zephyrproject-rtos/zephyr/pull/23240 (Patch, Third Party Advisory)
- github.com/zephyrproject-rtos/zephyr/pull/23455 (Patch, Third Party Advisory)
- github.com/zephyrproject-rtos/zephyr/pull/23456 (Patch, Third Party Advisory)
- docs.zephyrproject.org/latest/security/vulnerabilities.html
Frequently asked questions
- What is CVE-2020-10021?
- CVE-2020-10021 is a high-severity vulnerability in Zephyrproject Zephyr, classified under Out-of-bounds Write. CVSS score: 8.1/10. Published 2020-05-11.
- How severe is CVE-2020-10021?
- High severity. CVSS v3 base score is 8.1 out of 10.
- Is CVE-2020-10021 known to be exploited?
- 4 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.