CVE-2023-34323
Vulnerability from cvelistv5
Published
2024-01-05 16:30
Modified
2024-08-02 16:10
Severity ?
Summary
When a transaction is committed, C Xenstored will first check the quota is correct before attempting to commit any nodes. It would be possible that accounting is temporarily negative if a node has been removed outside of the transaction. Unfortunately, some versions of C Xenstored are assuming that the quota cannot be negative and are using assert() to confirm it. This will lead to C Xenstored crash when tools are built without -DNDEBUG (this is the default).
References
security@xen.orghttps://xenbits.xenproject.org/xsa/advisory-440.htmlPatch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://xenbits.xenproject.org/xsa/advisory-440.htmlPatch, Vendor Advisory
Impacted products
Vendor Product Version
Show details on NVD website

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          "dateUpdated": "2024-08-02T16:10:06.813Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://xenbits.xenproject.org/xsa/advisory-440.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "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"
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "This issue was discovered by Stanislav Uschakow and Julien Grall, all\nfrom Amazon.\n"
        }
      ],
      "datePublic": "2023-10-10T11:26:00Z",
      "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"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-01-05T16:30:32.305Z",
        "orgId": "23aa2041-22e1-471f-9209-9b7396fa234f",
        "shortName": "XEN"
      },
      "references": [
        {
          "url": "https://xenbits.xenproject.org/xsa/advisory-440.html"
        }
      ],
      "title": "xenstored: A transaction conflict can crash C Xenstored",
      "workarounds": [
        {
          "lang": "en",
          "value": "The problem can be avoided by using OCaml Xenstored variant.\n"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "23aa2041-22e1-471f-9209-9b7396fa234f",
    "assignerShortName": "XEN",
    "cveId": "CVE-2023-34323",
    "datePublished": "2024-01-05T16:30:32.305Z",
    "dateReserved": "2023-06-01T10:44:17.065Z",
    "dateUpdated": "2024-08-02T16:10:06.813Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
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  }
}


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