CVE-2022-35927 : Contiki-NG is an open-source, cross-platform operating system for IoT devices. In the RPL-Classic routing protocol imple

Contiki-NG is an open-source, cross-platform operating system for IoT devices. In the RPL-Classic routing protocol implementation in the Contiki-NG operating system, an incoming DODAG Information Option (DIO) control message can contain a prefix information option with a length parameter. The value of the length parameter is not validated, however, and it is possible to cause a buffer overflow when copying the prefix in the set_ip_from_prefix function. This vulnerability affects anyone running a Contiki-NG version prior to 4.7 that can receive RPL DIO messages from external parties. To obtain a patched version, users should upgrade to Contiki-NG 4.7 or later. There are no workarounds for this issue.

Published 2022-08-04 21:15:08

Updated 2022-08-11 15:14:12

Source GitHub, Inc.

View at NVD, CVE.org

Vulnerability category: Overflow

Exploit prediction scoring system (EPSS) score for CVE-2022-35927

EPSS FAQ

0.14%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 49 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2022-35927

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
9.8	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	3.9	5.9	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High
8.1	HIGH	CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H	2.2	5.9	GitHub, Inc.
Attack Vector: Network Attack Complexity: High Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: High

CWE ids for CVE-2022-35927

CWE-120 Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow.

Assigned by:

nvd@nist.gov (Primary)
security-advisories@github.com (Secondary)

Products affected by CVE-2022-35927

Contiki-ng » Contiki-ng
Versions before (<) 4.7
cpe:2.3:o:contiki-ng:contiki-ng:*:*:*:*:*:*:*:*
Matching versions

Vulnerability Details : CVE-2022-35927

Exploit prediction scoring system (EPSS) score for CVE-2022-35927

CVSS scores for CVE-2022-35927

CWE ids for CVE-2022-35927

References for CVE-2022-35927

Products affected by CVE-2022-35927