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Prevent security failure due to bad APP_ID (#18678) (#18682)

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Backport #18678

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 2022-02-10 15:17:44 +00:00 committed by GitHub
parent ce69882180
commit 2e317d3f6e
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2 changed files with 20 additions and 3 deletions
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10
modules/setting/setting.go
View file

@ -1022,8 +1022,13 @@ func loadFromConf(allowEmpty bool, extraConfig string) {
UI.CustomEmojisMap[emoji] = ":" + emoji + ":"
}
sec = Cfg.Section("U2F")
U2F.AppID = sec.Key("APP_ID").MustString(strings.TrimSuffix(AppURL, "/"))
// FIXME: DEPRECATED to be removed in v1.18.0
U2F.AppID = strings.TrimSuffix(AppURL, "/")
if Cfg.Section("U2F").HasKey("APP_ID") {
U2F.AppID = Cfg.Section("U2F").Key("APP_ID").MustString(strings.TrimSuffix(AppURL, "/"))
} else if Cfg.Section("u2f").HasKey("APP_ID") {
U2F.AppID = Cfg.Section("u2f").Key("APP_ID").MustString(strings.TrimSuffix(AppURL, "/"))
}
}
func parseAuthorizedPrincipalsAllow(values []string) ([]string, bool) {
@ -1162,7 +1167,6 @@ func MakeManifestData(appName, appURL, absoluteAssetURL string) []byte {
},
},
})
if err != nil {
log.Error("unable to marshal manifest JSON. Error: %v", err)
return make([]byte, 0)

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

@ -24,6 +24,19 @@ export function initUserAuthWebAuthn() {
.then((credential) => {
verifyAssertion(credential);
}).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);
});
}).fail(() => {