feat: add NIST NVD lookup

src/lib/searcher/index.ts

@@ -24,6 +24,7 @@ export { IPinfo } from "./ipinfo";
 export { JoeSandbox } from "./joesandbox";
 export { Malshare } from "./malshare";
 export { Maltiverse } from "./maltiverse";
+export { NVD } from "./nvd";
 export { OCCRP } from "./occrp";
 export { ONYPHE } from "./onyphe";
 export { OTX } from "./otx";

src/lib/searcher/nvd.ts

@@ -0,0 +1,17 @@
+import { buildURL } from "../url_builder";
+import { SearchableType, Searcher } from "./searcher";
+
+export class NVD implements Searcher {
+  public endpoint: string;
+  public name: string;
+  public supportedTypes: SearchableType[] = ["cve"];
+
+  public constructor() {
+    this.endpoint = "https://nvd.nist.gov";
+    this.name = "NVD";
+  }
+
+  public searchByCVE(query: string): string {
+    return buildURL(this.endpoint, `/vuln/detail/${query}`);
+  }
+}

src/lib/searcher/searchers.ts

@@ -25,6 +25,7 @@ import {
   JoeSandbox,
   Malshare,
   Maltiverse,
+  NVD,
   OCCRP,
   ONYPHE,
   OTX,
@@ -81,6 +82,7 @@ export const Searchers: Searcher[] = [
   new JoeSandbox(),
   new Malshare(),
   new Maltiverse(),
+  new NVD(),
   new OCCRP(),
   new ONYPHE(),
   new OTX(),

src/spec/searcher/nvd.spec.ts

@@ -0,0 +1,19 @@
+import { expect } from "chai";
+import "mocha";
+import { NVD } from "../../lib/searcher";
+
+describe("NVD", () => {
+  const subject = new NVD();
+
+  it("should support CVE type IOC", () => {
+    expect(subject.supportedTypes).to.deep.equal(["cve"]);
+  });
+
+  describe("#searchByCVE", () => {
+    it("should return URL", () => {
+      expect(subject.searchByCVE("CVE-2018-8013")).to.equal(
+        "https://nvd.nist.gov/vuln/detail/CVE-2018-8013"
+      );
+    });
+  });
+});