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Prevent security failure due to bad APP_ID (#18678)

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WebAuthn may cause a security exception if the provided APP_ID is not allowed for the
current origin. Therefore we should reattempt authentication without the appid
extension.

Also we should allow [u2f] as-well as [U2F] sections.

Signed-off-by: Andrew Thornton <art27@cantab.net>

Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
This commit is contained in:
zeripath 2022-02-09 07:37:58 +00:00 committed by GitHub
parent 4160aff86e
commit 2f76608221
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GPG key ID: 4AEE18F83AFDEB23
2 changed files with 18 additions and 2 deletions
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7
modules/setting/setting.go
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@ -1061,11 +1061,14 @@ func loadFromConf(allowEmpty bool, extraConfig string) {
} }
// FIXME: DEPRECATED to be removed in v1.18.0 // FIXME: DEPRECATED to be removed in v1.18.0
U2F.AppID = strings.TrimSuffix(AppURL, "/")
if Cfg.Section("U2F").HasKey("APP_ID") { if Cfg.Section("U2F").HasKey("APP_ID") {
log.Error("Deprecated setting `[U2F]` `APP_ID` present. This fallback will be removed in v1.18.0") log.Error("Deprecated setting `[U2F]` `APP_ID` present. This fallback will be removed in v1.18.0")
U2F.AppID = Cfg.Section("U2F").Key("APP_ID").MustString(strings.TrimSuffix(AppURL, "/"))
} else if Cfg.Section("u2f").HasKey("APP_ID") {
log.Error("Deprecated setting `[u2]` `APP_ID` present. This fallback will be removed in v1.18.0")
U2F.AppID = Cfg.Section("u2f").Key("APP_ID").MustString(strings.TrimSuffix(AppURL, "/"))
} }
sec = Cfg.Section("U2F")
U2F.AppID = sec.Key("APP_ID").MustString(strings.TrimSuffix(AppURL, "/"))
} }
func parseAuthorizedPrincipalsAllow(values []string) ([]string, bool) { func parseAuthorizedPrincipalsAllow(values []string) ([]string, bool) {

13
web_src/js/features/user-auth-webauthn.js
View file

@ -24,6 +24,19 @@ export function initUserAuthWebAuthn() {
.then((credential) => { .then((credential) => {
verifyAssertion(credential); verifyAssertion(credential);
}).catch((err) => { }).catch((err) => {
// Try again... without the appid
if (makeAssertionOptions.publicKey.extensions && makeAssertionOptions.publicKey.extensions.appid) {
delete makeAssertionOptions.publicKey.extensions['appid'];
navigator.credentials.get({
publicKey: makeAssertionOptions.publicKey
})
.then((credential) => {
verifyAssertion(credential);
}).catch((err) => {
webAuthnError('general', err.message);
});
return;
}
webAuthnError('general', err.message); webAuthnError('general', err.message);
}); });
}).fail(() => { }).fail(() => {