Add CVE-2021-21279 for GHSA-rr5j-j8m8-fc4f

2021/21xxx/CVE-2021-21279.json

@@ -1,18 +1,83 @@
 {
-    "data_type": "CVE",
-    "data_format": "MITRE",
-    "data_version": "4.0",
     "CVE_data_meta": {
+        "ASSIGNER": "security-advisories@github.com",
         "ID": "CVE-2021-21279",
-        "ASSIGNER": "cve@mitre.org",
-        "STATE": "RESERVED"
+        "STATE": "PUBLIC",
+        "TITLE": "Infinite loop in IPv6 neighbor solicitation processing"
     },
+    "affects": {
+        "vendor": {
+            "vendor_data": [
+                {
+                    "product": {
+                        "product_data": [
+                            {
+                                "product_name": "contiki-ng",
+                                "version": {
+                                    "version_data": [
+                                        {
+                                            "version_value": "< 4.6"
+                                        }
+                                    ]
+                                }
+                            }
+                        ]
+                    },
+                    "vendor_name": "contiki-ng"
+                }
+            ]
+        }
+    },
+    "data_format": "MITRE",
+    "data_type": "CVE",
+    "data_version": "4.0",
     "description": {
         "description_data": [
             {
                 "lang": "eng",
-                "value": "** RESERVED ** This candidate has been reserved by an organization or individual that will use it when announcing a new security problem. When the candidate has been publicized, the details for this candidate will be provided."
+                "value": "Contiki-NG is an open-source, cross-platform operating system for internet of things devices. In verions prior to 4.6, an attacker can perform a denial-of-service attack by triggering an infinite loop in the processing of IPv6 neighbor solicitation (NS) messages. This type of attack can effectively shut down the operation of the system because of the cooperative scheduling used for the main parts of Contiki-NG and its communication stack. The problem has been patched in Contiki-NG 4.6. Users can apply the patch for this vulnerability out-of-band as a workaround."
             }
         ]
+    },
+    "impact": {
+        "cvss": {
+            "attackComplexity": "LOW",
+            "attackVector": "NETWORK",
+            "availabilityImpact": "HIGH",
+            "baseScore": 7.5,
+            "baseSeverity": "HIGH",
+            "confidentialityImpact": "NONE",
+            "integrityImpact": "NONE",
+            "privilegesRequired": "NONE",
+            "scope": "UNCHANGED",
+            "userInteraction": "NONE",
+            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
+            "version": "3.1"
+        }
+    },
+    "problemtype": {
+        "problemtype_data": [
+            {
+                "description": [
+                    {
+                        "lang": "eng",
+                        "value": "CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')"
+                    }
+                ]
+            }
+        ]
+    },
+    "references": {
+        "reference_data": [
+            {
+                "name": "https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-rr5j-j8m8-fc4f",
+                "refsource": "CONFIRM",
+                "url": "https://github.com/contiki-ng/contiki-ng/security/advisories/GHSA-rr5j-j8m8-fc4f"
+            }
+        ]
+    },
+    "source": {
+        "advisory": "GHSA-rr5j-j8m8-fc4f",
+        "discovery": "UNKNOWN"
     }
 }