9.8
CRITICAL
CVE-2023-31129
"Contiki-NG IPv6 Router Solicitation NULL Pointer Dereference Vulnerability"
Description

The Contiki-NG operating system versions 4.8 and prior can be triggered to dereference a NULL pointer in the message handling code for IPv6 router solicitiations. Contiki-NG contains an implementation of IPv6 Neighbor Discovery (ND) in the module `os/net/ipv6/uip-nd6.c`. The ND protocol includes a message type called Router Solicitation (RS), which is used to locate routers and update their address information via the SLLAO (Source Link-Layer Address Option). If the indicated source address changes, a given neighbor entry is set to the STALE state. The message handler does not check for RS messages with an SLLAO that indicates a link-layer address change that a neighbor entry can actually be created for the indicated address. The resulting pointer is used without a check, leading to the dereference of a NULL pointer of type `uip_ds6_nbr_t`. The problem has been patched in the `develop` branch of Contiki-NG, and will be included in the upcoming 4.9 release. As a workaround, users can apply Contiki-NG pull request #2271 to patch the problem directly.

INFO

Published Date :

May 8, 2023, 9:15 p.m.

Last Modified :

Nov. 21, 2024, 8:01 a.m.

Remotely Exploitable :

Yes !

Impact Score :

5.9

Exploitability Score :

3.9
Affected Products

The following products are affected by CVE-2023-31129 vulnerability. Even if cvefeed.io is aware of the exact versions of the products that are affected, the information is not represented in the table below.

ID Vendor Product Action
1 Contiki-ng contiki-ng
References to Advisories, Solutions, and Tools

Here, you will find a curated list of external links that provide in-depth information, practical solutions, and valuable tools related to CVE-2023-31129.

URL Resource
https://github.com/contiki-ng/contiki-ng/pull/2271 Product
https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-x29r-5qjg-75mq Patch Vendor Advisory
https://github.com/contiki-ng/contiki-ng/pull/2271 Product
https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-x29r-5qjg-75mq Patch Vendor Advisory

We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).

Results are limited to the first 15 repositories due to potential performance issues.

The following list is the news that have been mention CVE-2023-31129 vulnerability anywhere in the article.

The following table lists the changes that have been made to the CVE-2023-31129 vulnerability over time.

Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.

  • CVE Modified by af854a3a-2127-422b-91ae-364da2661108

    Nov. 21, 2024

    Action Type Old Value New Value
    Added Reference https://github.com/contiki-ng/contiki-ng/pull/2271
    Added Reference https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-x29r-5qjg-75mq
  • CVE Modified by [email protected]

    May. 14, 2024

    Action Type Old Value New Value
  • Initial Analysis by [email protected]

    May. 15, 2023

    Action Type Old Value New Value
    Added CVSS V3.1 NIST AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
    Changed Reference Type https://github.com/contiki-ng/contiki-ng/pull/2271 No Types Assigned https://github.com/contiki-ng/contiki-ng/pull/2271 Product
    Changed Reference Type https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-x29r-5qjg-75mq No Types Assigned https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-x29r-5qjg-75mq Patch, Vendor Advisory
    Added CWE NIST CWE-476
    Added CPE Configuration OR *cpe:2.3:o:contiki-ng:contiki-ng:*:*:*:*:*:*:*:* versions up to (including) 4.8
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days. Following chart shows the EPSS score history of the vulnerability.
CWE - Common Weakness Enumeration

While CVE identifies specific instances of vulnerabilities, CWE categorizes the common flaws or weaknesses that can lead to vulnerabilities. CVE-2023-31129 is associated with the following CWEs:

Common Attack Pattern Enumeration and Classification (CAPEC)

Common Attack Pattern Enumeration and Classification (CAPEC) stores attack patterns, which are descriptions of the common attributes and approaches employed by adversaries to exploit the CVE-2023-31129 weaknesses.

Exploit Prediction

EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.

0.40 }} 0.09%

score

0.73262

percentile

CVSS31 - Vulnerability Scoring System
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