CVE-2022-41873

Contiki-NG is an open-source, cross-platform operating system for Next-Generation IoT devices. Versions prior to 4.9 are vulnerable to an Out-of-bounds read. While processing the L2CAP protocol, the Bluetooth Low Energy stack of Contiki-NG needs to map an incoming channel ID to its metadata structure. While looking up the corresponding channel structure in get_channel_for_cid (in os/net/mac/ble/ble-l2cap.c), a bounds check is performed on the incoming channel ID, which is meant to ensure that the channel ID does not exceed the maximum number of supported channels.However, an integer truncation issue leads to only the lowest byte of the channel ID to be checked, which leads to an incomplete out-of-bounds check. A crafted channel ID leads to out-of-bounds memory to be read and written with attacker-controlled data. The vulnerability has been patched in the "develop" branch of Contiki-NG, and will be included in release 4.9. As a workaround, Users can apply the patch in Contiki-NG pull request 2081 on GitHub.
Configurations

Configuration 1 (hide)

cpe:2.3:o:contiki-ng:contiki-ng:*:*:*:*:*:*:*:*

History

18 Nov 2022, 14:05

Type Values Removed Values Added
CVSS v2 : unknown
v3 : unknown
v2 : unknown
v3 : 5.4
References (CONFIRM) https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-m5cj-fw8m-ffgf - (CONFIRM) https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-m5cj-fw8m-ffgf - Third Party Advisory
References (MISC) https://github.com/contiki-ng/contiki-ng/pull/2081 - (MISC) https://github.com/contiki-ng/contiki-ng/pull/2081 - Patch, Third Party Advisory
CWE CWE-125
CPE cpe:2.3:o:contiki-ng:contiki-ng:*:*:*:*:*:*:*:*

11 Nov 2022, 04:15

Type Values Removed Values Added
New CVE

Information

Published : 2022-11-11 04:15

Updated : 2024-02-04 22:51


NVD link : CVE-2022-41873

Mitre link : CVE-2022-41873

CVE.ORG link : CVE-2022-41873


JSON object : View

Products Affected

contiki-ng

  • contiki-ng
CWE
CWE-125

Out-of-bounds Read

CWE-787

Out-of-bounds Write