UI: catch error when verifying certificates with unsupported signature algorithms

changelog/21926.txt

@@ -0,0 +1,3 @@
+```release-note:bug
+ui: Fixes problem displaying certificates issued with unsupported signature algorithms (i.e. ed25519)
+```

ui/app/utils/parse-pki-cert-oids.js

@@ -24,7 +24,7 @@ export const EXTENSION_OIDs = {
 };
 
 // these are allowed ext oids, but not parsed and passed to cross-signed certs
-export const IGNORED_OIDs = {
+export const OTHER_OIDs = {
   // These two extensions are controlled by the parent authority.
   authority_key_identifier: '2.5.29.35',
   authority_access_info: '1.3.6.1.5.5.7.1.1',

ui/app/utils/parse-pki-cert.js

@@ -9,7 +9,7 @@ import { Certificate } from 'pkijs';
 import { differenceInHours, getUnixTime } from 'date-fns';
 import {
   EXTENSION_OIDs,
-  IGNORED_OIDs,
+  OTHER_OIDs,
   KEY_USAGE_BITS,
   SAN_TYPES,
   SIGNATURE_ALGORITHM_OIDs,
@@ -131,15 +131,34 @@ export async function verifyCertificates(certA, certB, leaf) {
   const parsedCertB = jsonToCertObject(certB);
   if (leaf) {
     const parsedLeaf = jsonToCertObject(leaf);
-    const chainA = await parsedLeaf.verify(parsedCertA);
-    const chainB = await parsedLeaf.verify(parsedCertB);
+    const chainA = await verifySignature(parsedCertA, parsedLeaf);
+    const chainB = await verifySignature(parsedCertB, parsedLeaf);
     // the leaf's issuer should be equal to the subject data of the intermediate certs
     const isEqualA = parsedLeaf.issuer.isEqual(parsedCertA.subject);
     const isEqualB = parsedLeaf.issuer.isEqual(parsedCertB.subject);
     return chainA && chainB && isEqualA && isEqualB;
   }
   // can be used to validate if a certificate is self-signed (i.e. a root cert), by passing it as both certA and B
-  return (await parsedCertA.verify(parsedCertB)) && parsedCertA.issuer.isEqual(parsedCertB.subject);
+  return (await verifySignature(parsedCertA, parsedCertB)) && parsedCertA.issuer.isEqual(parsedCertB.subject);
+}
+
+export async function verifySignature(parent, child) {
+  try {
+    return await child.verify(parent);
+  } catch (error) {
+    // ed25519 is an unsupported signature algorithm and so verify() errors
+    // SKID (subject key ID) is the byte array of the key identifier
+    // AKID (authority key ID) is a SEQUENCE-type extension that includes the key identifier and potentially other information.
+    const skidExtension = parent.extensions.find((ext) => ext.extnID === OTHER_OIDs.subject_key_identifier);
+    const akidExtension = parent.extensions.find((ext) => ext.extnID === OTHER_OIDs.authority_key_identifier);
+    // return false if either extension is missing
+    // this could mean a false-negative but that's okay for our use-case
+    if (!skidExtension || !akidExtension) return false;
+    const skid = new Uint8Array(skidExtension.parsedValue.valueBlock.valueHex);
+    const akid = new Uint8Array(akidExtension.extnValue.valueBlock.valueHex);
+    // Check that AKID includes the SKID, which saves us from parsing the AKID and is unlikely to return false-positives.
+    return akid.toString().includes(skid.toString());
+  }
 }
 
 //* PARSING HELPERS
@@ -182,7 +201,7 @@ export function parseExtensions(extensions) {
   if (!extensions) return null;
   const values = {};
   const errors = [];
-  const allowedOids = Object.values({ ...EXTENSION_OIDs, ...IGNORED_OIDs });
+  const allowedOids = Object.values({ ...EXTENSION_OIDs, ...OTHER_OIDs });
   const isUnknownExtension = (ext) => !allowedOids.includes(ext.extnID);
   if (extensions.any(isUnknownExtension)) {
     const unknown = extensions.filter(isUnknownExtension).map((ext) => ext.extnID);

ui/lib/pki/addon/components/page/pki-issuer-list.hbs

@@ -2,7 +2,7 @@
   <LinkedBlock class="list-item-row" @params={{array "issuers.issuer.details" pkiIssuer.id}} @linkPrefix={{@mountPoint}}>
     <div class="level is-mobile">
       <div class="level-left">
-        <div>
+        <div data-test-issuer-list={{pkiIssuer.id}}>
           <Icon @name="certificate" class="has-text-grey-light" />
           <span class="has-text-weight-semibold is-underline">
             {{pkiIssuer.issuerRef}}

ui/tests/acceptance/pki/pki-configuration-test.js

@@ -6,7 +6,7 @@
 import { module, test } from 'qunit';
 import { setupApplicationTest } from 'ember-qunit';
 import { setupMirage } from 'ember-cli-mirage/test-support';
-import { click, currentURL, fillIn, visit, isSettled, waitUntil } from '@ember/test-helpers';
+import { click, currentURL, fillIn, visit, isSettled, waitUntil, find } from '@ember/test-helpers';
 import { v4 as uuidv4 } from 'uuid';
 
 import authPage from 'vault/tests/pages/auth';
@@ -193,5 +193,30 @@ module('Acceptance | pki configuration test', function (hooks) {
           "This PKI mount hasn't yet been configured with a certificate issuer. There are existing certificates. Use the CLI to perform any operations with them until an issuer is configured."
         );
     });
+
+    // test coverage for ed25519 certs not displaying because the verify() function errors
+    test('it generates and displays a root issuer of key type = ed25519', async function (assert) {
+      assert.expect(4);
+      await authPage.login(this.pkiAdminToken);
+      await visit(`/vault/secrets/${this.mountPath}/pki/overview`);
+      await click(SELECTORS.issuersTab);
+      await click(SELECTORS.generateIssuerDropdown);
+      await click(SELECTORS.generateIssuerRoot);
+      await fillIn(SELECTORS.configuration.inputByName('type'), 'internal');
+      await fillIn(SELECTORS.configuration.inputByName('commonName'), 'my-certificate');
+      await click(SELECTORS.configuration.keyParamsGroupToggle);
+      await fillIn(SELECTORS.configuration.inputByName('keyType'), 'ed25519');
+      await click(SELECTORS.configuration.generateRootSave);
+
+      const issuerId = find(SELECTORS.configuration.saved.issuerLink).innerHTML;
+      await visit(`/vault/secrets/${this.mountPath}/pki/issuers`);
+      assert.dom(SELECTORS.issuerListItem(issuerId)).exists();
+      assert
+        .dom('[data-test-common-name="0"]')
+        .hasText('my-certificate', 'parses certificate metadata in the list view');
+      await click(SELECTORS.issuerListItem(issuerId));
+      assert.strictEqual(currentURL(), `/vault/secrets/${this.mountPath}/pki/issuers/${issuerId}/details`);
+      assert.dom(SELECTORS.configuration.saved.commonName).exists('renders issuer details');
+    });
   });
 });

ui/tests/helpers/pki/workflow.js

@@ -12,6 +12,7 @@ import { SELECTORS as CONFIGURATION } from './pki-configure-create';
 import { SELECTORS as DELETE } from './pki-delete-all-issuers';
 import { SELECTORS as TIDY } from './page/pki-tidy-form';
 import { SELECTORS as CONFIGEDIT } from './page/pki-configuration-edit';
+import { SELECTORS as GENROOT } from './pki-generate-root';
 
 export const SELECTORS = {
   breadcrumbContainer: '[data-test-breadcrumbs]',
@@ -50,6 +51,7 @@ export const SELECTORS = {
     ...KEYPAGES,
   },
   // ISSUERS
+  issuerListItem: (id) => `[data-test-issuer-list="${id}"]`,
   importIssuerLink: '[data-test-generate-issuer="import"]',
   generateIssuerDropdown: '[data-test-issuer-generate-dropdown]',
   generateIssuerRoot: '[data-test-generate-issuer="root"]',
@@ -71,6 +73,7 @@ export const SELECTORS = {
     ...CONFIGURATION,
     ...DELETE,
     ...TIDY,
+    ...GENROOT,
   },
   // EDIT CONFIGURATION
   configEdit: {

ui/tests/integration/utils/parse-pki-cert-test.js

@@ -11,14 +11,19 @@ import { fromBase64, stringToArrayBuffer } from 'pvutils';
 import { Certificate } from 'pkijs';
 import { addHours, fromUnixTime, isSameDay } from 'date-fns';
 import errorMessage from 'vault/utils/error-message';
-import { SAN_TYPES } from 'vault/utils/parse-pki-cert-oids';
+import { OTHER_OIDs, SAN_TYPES } from 'vault/utils/parse-pki-cert-oids';
 import {
   certWithoutCN,
   loadedCert,
   pssTrueCert,
   skeletonCert,
   unsupportedOids,
+  unsupportedSignatureRoot,
+  unsupportedSignatureInt,
 } from 'vault/tests/helpers/pki/values';
+import { verifyCertificates } from 'vault/utils/parse-pki-cert';
+import { jsonToCertObject } from 'vault/utils/parse-pki-cert';
+import { verifySignature } from 'vault/utils/parse-pki-cert';
 
 module('Integration | Util | parse pki certificate', function (hooks) {
   setupTest(hooks);
@@ -227,6 +232,35 @@ module('Integration | Util | parse pki certificate', function (hooks) {
     );
   });
 
+  test('the helper verifyCertificates catches errors', async function (assert) {
+    assert.expect(5);
+    const verifiedRoot = await verifyCertificates(unsupportedSignatureRoot, unsupportedSignatureRoot);
+    assert.true(verifiedRoot, 'returns true for root certificate');
+    const verifiedInt = await verifyCertificates(unsupportedSignatureInt, unsupportedSignatureInt);
+    assert.false(verifiedInt, 'returns false for intermediate cert');
+
+    const filterExtensions = (list, oid) => list.filter((ext) => ext.extnID !== oid);
+    const { subject_key_identifier, authority_key_identifier } = OTHER_OIDs;
+    const testCert = jsonToCertObject(unsupportedSignatureRoot);
+    const certWithoutSKID = testCert;
+    certWithoutSKID.extensions = filterExtensions(testCert.extensions, subject_key_identifier);
+    assert.false(
+      await verifySignature(certWithoutSKID, certWithoutSKID),
+      'returns false if no subject key ID'
+    );
+
+    const certWithoutAKID = testCert;
+    certWithoutAKID.extensions = filterExtensions(testCert.extensions, authority_key_identifier);
+    assert.false(await verifySignature(certWithoutAKID, certWithoutAKID), 'returns false if no AKID');
+
+    const certWithoutKeyID = testCert;
+    certWithoutAKID.extensions = [];
+    assert.false(
+      await verifySignature(certWithoutKeyID, certWithoutKeyID),
+      'returns false if neither SKID or AKID'
+    );
+  });
+
   test('it fails silently when passed null', async function (assert) {
     assert.expect(3);
     const parsedCert = parseCertificate(certWithoutCN);