CVE-2024-41125

CRITICAL EPSS 20.3%
Published Nov 27, 20241y ago · Modified Jun 17, 20261w ago
9.6 CVSS 3.1
Critical
Find Similar
Published Nov 27, 2024 1y ago
Last Modified Jun 17, 2026 1w ago

Description

Contiki-NG is an open-source, cross-platform operating system for IoT devices. An out-of-bounds read of 1 byte can be triggered when sending a packet to a device running the Contiki-NG operating system with SNMP enabled. The SNMP module is disabled in the default Contiki-NG configuration. The vulnerability exists in the os/net/app-layer/snmp/snmp-ber.c module, where the function snmp_ber_decode_string_len_buffer decodes the string length from a received SNMP packet. In one place, one byte is read from the buffer, without checking that the buffer has another byte available, leading to a possible out-of-bounds read. The problem has been patched in Contiki-NG pull request #2936. It will be included in the next release of Contiki-NG. Users are advised to apply the patch manually or to wait for the next release. A workaround is to disable the SNMP module in the Contiki-NG build configuration.

CVSS Details

Base Score
9.6
Exploitability
2.8
Impact
6.0
Vector string
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Attack Vector Adjacent
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Changed
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
20.3% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-125 Out-of-bounds Read Memory Safety

Affected Products 1

VendorProductVersionRange
contiki-ngcontiki-ng* ≤4.9

References 2

  • github.com https://github.com/contiki-ng/contiki-ng/pull/2936
    Issue TrackingPatch
  • github.com https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-qjj3-gqx7-438w
    Vendor Advisory

Remediation

  • github.com https://github.com/contiki-ng/contiki-ng/pull/2936
    Issue TrackingPatch