CVEvulnerability
CVE-2019-9183
7.5 HIGH
Official page ↗
- Status
- Modified
- Published
- 2020-04-23
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 7.5 HIGH — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- CVSS 2.0 ([email protected])
- 5.0 MEDIUM — AV:N/AC:L/Au:N/C:N/I:N/A:P
- Weaknesses
- CWE-191, CWE-787
Description
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.
Affected configurations
• contiki-ng contiki-ng (<= 4.3)
• contiki-os contiki (<= 3.0)
Related
References
- https://github.com/contiki-ng/contiki-ng/pull/972 Patch, Third Party Advisory
- https://github.com/contiki-ng/contiki-ng/releases/tag/release%2Fv4.4 Release Notes, Third Party Advisory
- https://www.usenix.org/system/files/sec20summer_clements_prepub.pdf Technical Description, Third Party Advisory
- https://github.com/contiki-ng/contiki-ng/pull/972 Patch, Third Party Advisory
- https://github.com/contiki-ng/contiki-ng/releases/tag/release%2Fv4.4 Release Notes, Third Party Advisory
- https://www.usenix.org/system/files/sec20summer_clements_prepub.pdf Technical Description, Third Party Advisory