{
    "dataType": "CVE_RECORD",
    "dataVersion": "5.2",
    "cveMetadata": {
        "cveId": "CVE-2023-34323",
        "assignerOrgId": "23aa2041-22e1-471f-9209-9b7396fa234f",
        "state": "PUBLISHED",
        "assignerShortName": "XEN",
        "dateReserved": "2023-06-01T10:44:17.065Z",
        "datePublished": "2024-01-05T16:30:32.305Z",
        "dateUpdated": "2025-11-04T19:16:36.587Z"
    },
    "containers": {
        "cna": {
            "title": "xenstored: A transaction conflict can crash C Xenstored",
            "datePublic": "2023-10-10T11:26:00.000Z",
            "descriptions": [
                {
                    "lang": "en",
                    "value": "When a transaction is committed, C Xenstored will first check\nthe quota is correct before attempting to commit any nodes.  It would\nbe possible that accounting is temporarily negative if a node has\nbeen removed outside of the transaction.\n\nUnfortunately, some versions of C Xenstored are assuming that the\nquota cannot be negative and are using assert() to confirm it.  This\nwill lead to C Xenstored crash when tools are built without -DNDEBUG\n(this is the default).\n"
                }
            ],
            "impacts": [
                {
                    "descriptions": [
                        {
                            "lang": "en",
                            "value": "A malicious guest could craft a transaction that will hit the C\nXenstored bug and crash it.  This will result to the inability to\nperform any further domain administration like starting new guests,\nor adding/removing resources to or from any existing guest.\n"
                        }
                    ]
                }
            ],
            "affected": [
                {
                    "defaultStatus": "unknown",
                    "product": "Xen",
                    "vendor": "Xen",
                    "versions": [
                        {
                            "status": "unknown",
                            "version": "consult Xen advisory XSA-440"
                        }
                    ]
                }
            ],
            "configurations": [
                {
                    "lang": "en",
                    "value": "All versions of Xen up to and including 4.17 are vulnerable if XSA-326\nwas ingested.\n\nAll Xen systems using C Xenstored are vulnerable.  C Xenstored built\nusing -DNDEBUG (can be specified via EXTRA_CFLAGS_XEN_TOOLS=-DNDEBUG)\nare not vulnerable.  Systems using the OCaml variant of Xenstored are\nnot vulnerable.\n"
                }
            ],
            "workarounds": [
                {
                    "lang": "en",
                    "value": "The problem can be avoided by using OCaml Xenstored variant.\n"
                }
            ],
            "credits": [
                {
                    "lang": "en",
                    "type": "finder",
                    "value": "This issue was discovered by Stanislav Uschakow and Julien Grall, all\nfrom Amazon.\n"
                }
            ],
            "references": [
                {
                    "url": "https://xenbits.xenproject.org/xsa/advisory-440.html"
                }
            ],
            "providerMetadata": {
                "orgId": "23aa2041-22e1-471f-9209-9b7396fa234f",
                "shortName": "XEN",
                "dateUpdated": "2024-01-05T16:30:32.305Z"
            }
        },
        "adp": [
            {
                "title": "CVE Program Container",
                "references": [
                    {
                        "url": "https://xenbits.xenproject.org/xsa/advisory-440.html",
                        "tags": [
                            "x_transferred"
                        ]
                    },
                    {
                        "url": "http://xenbits.xen.org/xsa/advisory-440.html"
                    }
                ],
                "providerMetadata": {
                    "orgId": "af854a3a-2127-422b-91ae-364da2661108",
                    "shortName": "CVE",
                    "dateUpdated": "2025-11-04T19:16:36.587Z"
                }
            },
            {
                "problemTypes": [
                    {
                        "descriptions": [
                            {
                                "type": "CWE",
                                "cweId": "CWE-476",
                                "lang": "en",
                                "description": "CWE-476 NULL Pointer Dereference"
                            }
                        ]
                    }
                ],
                "metrics": [
                    {
                        "cvssV3_1": {
                            "scope": "UNCHANGED",
                            "version": "3.1",
                            "baseScore": 5.5,
                            "attackVector": "LOCAL",
                            "baseSeverity": "MEDIUM",
                            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                            "integrityImpact": "NONE",
                            "userInteraction": "NONE",
                            "attackComplexity": "LOW",
                            "availabilityImpact": "HIGH",
                            "privilegesRequired": "LOW",
                            "confidentialityImpact": "NONE"
                        }
                    },
                    {
                        "other": {
                            "type": "ssvc",
                            "content": {
                                "timestamp": "2024-01-09T16:40:56.610734Z",
                                "id": "CVE-2023-34323",
                                "options": [
                                    {
                                        "Exploitation": "none"
                                    },
                                    {
                                        "Automatable": "no"
                                    },
                                    {
                                        "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": "2025-06-18T15:46:24.091Z"
                }
            }
        ]
    }
}