Vulnerability Monitor

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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

2020-04-23T15:15:13.950

Last Modified

2024-11-21T04:51:09.540

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 7.5 (HIGH)

CVSSv2 Vector

AV:N/AC:L/Au:N/C:N/I:N/A:P

Access Vector: NETWORK
Access Complexity: LOW
Authentication: NONE
Confidentiality Impact: NONE
Integrity Impact: NONE
Availability Impact: PARTIAL

Exploitability Score

10.0

Impact Score

2.9

Weaknesses

Type: Primary
CWE-191
CWE-787

Affected Vendors & Products

Type	Vendor	Product	Version/Range	Vulnerable?
Operating System	contiki-ng	contiki-ng	≤ 4.3	Yes
Operating System	contiki-os	contiki	≤ 3.0	Yes

References

https://github.com/contiki-ng/contiki-ng/pull/972 Patch, Third Party Advisory ([email protected])
https://github.com/contiki-ng/contiki-ng/releases/tag/release%2Fv4.4 Release Notes, Third Party Advisory ([email protected])
https://www.usenix.org/system/files/sec20summer_clements_prepub.pdf Technical Description, Third Party Advisory ([email protected])
https://github.com/contiki-ng/contiki-ng/pull/972 Patch, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://github.com/contiki-ng/contiki-ng/releases/tag/release%2Fv4.4 Release Notes, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)
https://www.usenix.org/system/files/sec20summer_clements_prepub.pdf Technical Description, Third Party Advisory (af854a3a-2127-422b-91ae-364da2661108)