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
Xen Xen Create a notification for this product.
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            providerMetadata: {
               dateUpdated: "2024-08-02T16:10:06.813Z",
               orgId: "af854a3a-2127-422b-91ae-364da2661108",
               shortName: "CVE",
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            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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         id: "CVE-2023-34323",
         lastModified: "2024-11-21T08:07:00.780",
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