cvelist/2022/42xxx/CVE-2022-42321.json

{
   "CVE_data_meta" : {
      "ASSIGNER" : "security@xenproject.org",
      "ID" : "CVE-2022-42321"
   },
   "affects" : {
      "vendor" : {
         "vendor_data" : [
            {
               "product" : {
                  "product_data" : [
                     {
                        "product_name" : "xen",
                        "version" : {
                           "version_data" : [
                              {
                                 "version_affected" : "?",
                                 "version_value" : "consult Xen advisory XSA-418"
                              }
                           ]
                        }
                     }
                  ]
               },
               "vendor_name" : "Xen"
            }
         ]
      }
   },
   "configuration" : {
      "configuration_data" : {
         "description" : {
            "description_data" : [
               {
                  "lang" : "eng",
                  "value" : "All versions of Xen are affected.\n\nOnly systems running the C variant of Xenstore (xenstored or xenstore-\nstubdom) are vulnerable.\n\nSystems using the Ocaml variant of Xenstore (oxenstored) are not vulnerable."
               }
            ]
         }
      }
   },
   "credit" : {
      "credit_data" : {
         "description" : {
            "description_data" : [
               {
                  "lang" : "eng",
                  "value" : "This issue was discovered by David Vrabel of Amazon."
               }
            ]
         }
      }
   },
   "data_format" : "MITRE",
   "data_type" : "CVE",
   "data_version" : "4.0",
   "description" : {
      "description_data" : [
         {
            "lang" : "eng",
            "value" : "Xenstore: Guests can crash xenstored via exhausting the stack\n\nXenstored is using recursion for some Xenstore operations (e.g. for\ndeleting a sub-tree of Xenstore nodes). With sufficiently deep nesting\nlevels this can result in stack exhaustion on xenstored, leading to a\ncrash of xenstored."
         }
      ]
   },
   "impact" : {
      "impact_data" : {
         "description" : {
            "description_data" : [
               {
                  "lang" : "eng",
                  "value" : "A malicious guest creating very deep nesting levels of Xenstore nodes\nmight be able to crash xenstored, resulting in a Denial of Service (DoS)\nof Xenstore.\n\nThis will inhibit creation of new guests or changing the configuration of\nalready running guests."
               }
            ]
         }
      }
   },
   "problemtype" : {
      "problemtype_data" : [
         {
            "description" : [
               {
                  "lang" : "eng",
                  "value" : "unknown"
               }
            ]
         }
      ]
   },
   "references" : {
      "reference_data" : [
         {
            "url" : "https://xenbits.xenproject.org/xsa/advisory-418.txt"
         }
      ]
   },
   "workaround" : {
      "workaround_data" : {
         "description" : {
            "description_data" : [
               {
                  "lang" : "eng",
                  "value" : "Running oxenstored instead of xenstored will avoid the vulnerability."
               }
            ]
         }
      }
   }
}