Buffer overflow in Contiki-Ng
CVE-2019-9183
An issue was discovered in Contiki-NG through 4.3 and Contiki through 3.0. A buffer overflow is present due to an integer underflow during 6LoWPAN fragment processing in the face of truncated fragments in os/net/ipv6/sicslowpan.c. This results in accesses of unmapped memory, crashing the application. An attacker can cause a denial-of-service via a crafted 6LoWPAN frame.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.023 (83.3th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 83rd percentile — 83.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.023 · newest: 0.023 · change: 0.000
Affected products
Weakness classification (CWE)
References
- github.com/contiki-ng/contiki-ng/pull/972 (Patch, Third Party Advisory)
- github.com/contiki-ng/contiki-ng/releases/tag/release/v4.4 (Third Party Advisory, Release Notes)
- www.usenix.org/system/files/sec20summer_clements_prepub.pdf (Technical Description, Third Party Advisory)
Frequently asked questions
- What is CVE-2019-9183?
- CVE-2019-9183 is a high-severity vulnerability in Contiki-Ng, classified under Integer Underflow. CVSS score: 7.5/10. Published 2020-04-23.
- How severe is CVE-2019-9183?
- High severity. CVSS v3 base score is 7.5 out of 10.