{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.1",
    "cveMetadata": {
        "cveId": "CVE-2023-31129",
        "assignerOrgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
        "state": "PUBLISHED",
        "assignerShortName": "GitHub_M",
        "dateReserved": "2023-04-24T21:44:10.416Z",
        "datePublished": "2023-05-08T20:51:14.657Z",
        "dateUpdated": "2025-01-29T14:30:14.341Z"
    },
    "containers": {
        "cna": {
            "title": "Contiki-NG missing NULL pointer check in IPv6 neighbor discovery",
            "problemTypes": [
                {
                    "descriptions": [
                        {
                            "cweId": "CWE-476",
                            "lang": "en",
                            "description": "CWE-476: NULL Pointer Dereference",
                            "type": "CWE"
                        }
                    ]
                }
            ],
            "metrics": [
                {
                    "cvssV3_1": {
                        "attackComplexity": "LOW",
                        "attackVector": "NETWORK",
                        "availabilityImpact": "NONE",
                        "baseScore": 7.5,
                        "baseSeverity": "HIGH",
                        "confidentialityImpact": "NONE",
                        "integrityImpact": "HIGH",
                        "privilegesRequired": "NONE",
                        "scope": "UNCHANGED",
                        "userInteraction": "NONE",
                        "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N",
                        "version": "3.1"
                    }
                }
            ],
            "references": [
                {
                    "name": "https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-x29r-5qjg-75mq",
                    "tags": [
                        "x_refsource_CONFIRM"
                    ],
                    "url": "https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-x29r-5qjg-75mq"
                },
                {
                    "name": "https://github.com/contiki-ng/contiki-ng/pull/2271",
                    "tags": [
                        "x_refsource_MISC"
                    ],
                    "url": "https://github.com/contiki-ng/contiki-ng/pull/2271"
                }
            ],
            "affected": [
                {
                    "vendor": "contiki-ng",
                    "product": "contiki-ng",
                    "versions": [
                        {
                            "version": "<= 4.8",
                            "status": "affected"
                        }
                    ]
                }
            ],
            "providerMetadata": {
                "orgId": "a0819718-46f1-4df5-94e2-005712e83aaa",
                "shortName": "GitHub_M",
                "dateUpdated": "2023-05-08T20:51:14.657Z"
            },
            "descriptions": [
                {
                    "lang": "en",
                    "value": "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.\n\nThe 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`.\n\nThe 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."
                }
            ],
            "source": {
                "advisory": "GHSA-x29r-5qjg-75mq",
                "discovery": "UNKNOWN"
            }
        },
        "adp": [
            {
                "providerMetadata": {
                    "orgId": "af854a3a-2127-422b-91ae-364da2661108",
                    "shortName": "CVE",
                    "dateUpdated": "2024-08-02T14:45:25.766Z"
                },
                "title": "CVE Program Container",
                "references": [
                    {
                        "name": "https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-x29r-5qjg-75mq",
                        "tags": [
                            "x_refsource_CONFIRM",
                            "x_transferred"
                        ],
                        "url": "https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-x29r-5qjg-75mq"
                    },
                    {
                        "name": "https://github.com/contiki-ng/contiki-ng/pull/2271",
                        "tags": [
                            "x_refsource_MISC",
                            "x_transferred"
                        ],
                        "url": "https://github.com/contiki-ng/contiki-ng/pull/2271"
                    }
                ]
            },
            {
                "metrics": [
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2025-01-29T14:30:04.885107Z",
                                "id": "CVE-2023-31129",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "yes"
                                    },
                                    {
                                        "Technical Impact": "partial"
                                    }
                                ],
                                "role": "CISA Coordinator",
                                "version": "2.0.3"
                            }
                        }
                    }
                ],
                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
                    "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
                    "shortName": "CISA-ADP",
                    "dateUpdated": "2025-01-29T14:30:14.341Z"
                }
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        ]
    }
}