CVE-2019-9183 Information

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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

https://github.com/contiki-ng/contiki-ng/pull/972 https://github.com/contiki-ng/contiki-ng/releases/tag/release2Fv4.4 https://www.usenix.org/system/files/sec20summer_clements_prepub.pdf

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5