First published: Fri Jul 08 2022(Updated: )
Description of problem: Keystone issues tokens with the default lifespan regardless of the lifespan of the application credentials used to issue them. If the configured lifespan of an identity token is set to be 1h, and the application credentials expire in 1 minute from now, a newly issued token will outlive the application credentials used to issue it by 59 minutes. How reproducible: 100% Steps to Reproduce: 1. Create application credentials with short expiration time (e.g. 10 seconds) 2. openstack token issue --> the returned token has standard expiration, for example 1 hour. The script below confirms that the token continue being valid after the application credentials expired. ```bash #!/usr/bin/env bash set -Eeuo pipefail openstack image create --disk-format=raw --container-format=bare --file <(echo 'I am a Glance image') testimage -f json > image.json image_url="$(openstack catalog show glance -f json | jq -r '.endpoints[] | select(.interface=="public").url')$(jq -r '.file' image.json)" openstack application credential create \ --expiration="$(date --utc --date '+10 second' +%Y-%m-%dT%H:%M:%S)" \ token_test \ -f json \ > appcreds.json cat <<EOF > clouds.yaml clouds: ${OS_CLOUD}: auth: auth_url: <auth_url> application_credential_id: '$(jq -r '.id' appcreds.json)' application_credential_secret: '$(jq -r '.secret' appcreds.json)' auth_type: "v3applicationcredential" identity_api_version: 3 interface: public region_name: <region_name> EOF # Override ~/.config/openstack/secure.yaml touch secure.yaml openstack token issue -f json > token.json echo "appcreds expiration: $(jq -r '.expires_at' appcreds.json)" for i in {1..10}; do sleep 100 echo -ne "$(date --utc --rfc-3339=seconds)\t" curl -isS -H "X-Auth-Token: $(jq -r '.id' token.json)" --url "$image_url" | head -n1 done ``` Actual results (on a cloud with tokens duration of 24h): appcreds expiration: 2022-07-08T13:55:02.000000 2022-07-08 13:56:38+00:00 HTTP/1.1 200 OK 2022-07-08 13:58:19+00:00 HTTP/1.1 200 OK 2022-07-08 14:00:00+00:00 HTTP/1.1 200 OK 2022-07-08 14:01:42+00:00 HTTP/1.1 200 OK 2022-07-08 14:03:23+00:00 HTTP/1.1 200 OK 2022-07-08 14:05:07+00:00 HTTP/1.1 200 OK 2022-07-08 14:06:49+00:00 HTTP/1.1 200 OK 2022-07-08 14:08:37+00:00 HTTP/1.1 200 OK 2022-07-08 14:10:18+00:00 HTTP/1.1 200 OK 2022-07-08 14:12:00+00:00 HTTP/1.1 200 OK Expected results: appcreds expiration: 2022-07-08T13:55:02.000000 2022-07-08 13:54:38+00:00 HTTP/1.1 200 OK 2022-07-08 13:58:19+00:00 HTTP/1.1 401 Unauthorized 2022-07-08 14:00:00+00:00 HTTP/1.1 401 Unauthorized 2022-07-08 14:01:42+00:00 HTTP/1.1 401 Unauthorized 2022-07-08 14:03:23+00:00 HTTP/1.1 401 Unauthorized 2022-07-08 14:05:07+00:00 HTTP/1.1 401 Unauthorized 2022-07-08 14:06:49+00:00 HTTP/1.1 401 Unauthorized 2022-07-08 14:08:37+00:00 HTTP/1.1 401 Unauthorized 2022-07-08 14:10:18+00:00 HTTP/1.1 401 Unauthorized 2022-07-08 14:12:00+00:00 HTTP/1.1 401 Unauthorized
Affected Software | Affected Version | How to fix |
---|---|---|
OpenStack keystonemiddleware |
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The severity of REDHAT-BUG-2105419 is currently assessed as medium due to potential unauthorized access from token misuse.
To fix REDHAT-BUG-2105419, you should update your OpenStack Keystone to the latest version where this issue has been addressed.
REDHAT-BUG-2105419 affects the token issuing process in OpenStack Keystone, causing tokens to have a default lifespan regardless of application credentials.
The specific versions of Keystone affected by REDHAT-BUG-2105419 have not been detailed, so checking your version against the latest release notes is recommended.
Currently, there is no documented workaround for REDHAT-BUG-2105419; upgrading to the fixed version is the recommended approach.