add CVE-2020-5236 for GHSA-73m2-3pwg-5fgc

2020/5xxx/CVE-2020-5236.json

@@ -1,18 +1,88 @@
 {
-    "data_type": "CVE",
-    "data_format": "MITRE",
-    "data_version": "4.0",
     "CVE_data_meta": {
+        "ASSIGNER": "security-advisories@github.com",
         "ID": "CVE-2020-5236",
-        "ASSIGNER": "cve@mitre.org",
-        "STATE": "RESERVED"
+        "STATE": "PUBLIC",
+        "TITLE": "Catastrophic backtracking in regex allows Denial of Service in Waitress"
     },
+    "affects": {
+        "vendor": {
+            "vendor_data": [
+                {
+                    "product": {
+                        "product_data": [
+                            {
+                                "product_name": "Waitress",
+                                "version": {
+                                    "version_data": [
+                                        {
+                                            "version_value": "= 1.4.2"
+                                        }
+                                    ]
+                                }
+                            }
+                        ]
+                    },
+                    "vendor_name": "Pylons"
+                }
+            ]
+        }
+    },
+    "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": "Waitress version 1.4.2 allows a DOS attack When waitress receives a header that contains invalid characters. \nWhen a header like \"Bad-header: xxxxxxxxxxxxxxx\\x10\" is received, it will cause the regular expression engine to \ncatastrophically backtrack causing the process to use 100% CPU time and blocking any other interactions.\nThis allows an attacker to send a single request with an invalid header and take the service offline.\n\nThis issue was introduced in version 1.4.2 when the regular expression was updated to attempt to match the behaviour required by errata associated with RFC7230.\n\nThe regular expression that is used to validate incoming headers has been updated in version 1.4.3, it is recommended that people upgrade to the new version of Waitress as soon as possible."
             }
         ]
+    },
+    "impact": {
+        "cvss": {
+            "attackComplexity": "LOW",
+            "attackVector": "NETWORK",
+            "availabilityImpact": "HIGH",
+            "baseScore": 5.7,
+            "baseSeverity": "MEDIUM",
+            "confidentialityImpact": "NONE",
+            "integrityImpact": "NONE",
+            "privilegesRequired": "LOW",
+            "scope": "UNCHANGED",
+            "userInteraction": "REQUIRED",
+            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:N/A:H",
+            "version": "3.1"
+        }
+    },
+    "problemtype": {
+        "problemtype_data": [
+            {
+                "description": [
+                    {
+                        "lang": "eng",
+                        "value": "CWE-400: Uncontrolled Resource Consumption"
+                    }
+                ]
+            }
+        ]
+    },
+    "references": {
+        "reference_data": [
+            {
+                "name": "https://github.com/Pylons/waitress/security/advisories/GHSA-73m2-3pwg-5fgc",
+                "refsource": "CONFIRM",
+                "url": "https://github.com/Pylons/waitress/security/advisories/GHSA-73m2-3pwg-5fgc"
+            },
+            {
+                "name": "https://github.com/Pylons/waitress/commit/6e46f9e3f014d64dd7d1e258eaf626e39870ee1f",
+                "refsource": "MISC",
+                "url": "https://github.com/Pylons/waitress/commit/6e46f9e3f014d64dd7d1e258eaf626e39870ee1f"
+            }
+        ]
+    },
+    "source": {
+        "advisory": "GHSA-73m2-3pwg-5fgc",
+        "discovery": "UNKNOWN"
     }
-}
+}