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fix(oauth2): Fix crash in rolesClaim extraction

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This patch adds a try-catch around the rolesClaim extraction to prevent
full crashes of HedgeDoc when a user profile is read, that doesn't
contain any such claim, which can happen with some IdPs, like Keycloak,
that omit the attribute when it's empty.

As a result an authorized user would crash the entire server, which is
definitely unintended behaviour. The simply try-catch should resolve the
issue and make sure that roles is always defined even if the
`extractProfileAttribute` call fails.

Signed-off-by: Sheogorath <sheogorath@shivering-isles.com>
This commit is contained in:
Sheogorath 2023-08-31 01:52:00 +02:00 committed by Tilman Vatteroth
parent 5db2fa1a0e
commit 1f1b2bd386
1 changed files with 7 additions and 1 deletions
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8
lib/web/auth/oauth2/index.js
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@ -75,7 +75,13 @@ function checkAuthorization (data, done) {
logger.error('oauth2: "accessRole" is configured, but "rolesClaim" is missing from the config. Can\'t check group membership!')
} else {
// parse and check role data
const roles = extractProfileAttribute(data, config.oauth2.rolesClaim)
let roles = []
try {
roles = extractProfileAttribute(data, config.oauth2.rolesClaim)
} catch (err) {
logger.warn(`oauth2: failed to extract rolesClaim '${config.oauth2.rolesClaim}' from user profile.`)
return done('Permission denied', null)
}
if (!roles) {
logger.error('oauth2: "accessRole" is configured, but user profile doesn\'t contain roles attribute. Permission denied')
return done('Permission denied', null)