Description
LTI JupyterHub Authenticator is a JupyterHub authenticator for LTI. Prior to version 1.6.3, the LTI 1.1 validator stores OAuth nonces in a class-level dictionary that grows without bounds. Nonces are added before signature validation, so an attacker with knowledge of a valid consumer key can send repeated requests with unique nonces to gradually exhaust server memory, causing a denial of service. This issue has been patched in version 1.6.3.
Problem types
CWE-401: Missing Release of Memory after Effective Lifetime
CWE-770: Allocation of Resources Without Limits or Throttling
Product status
References
github.com/...icator/security/advisories/GHSA-8mxq-7xr7-2fxj
github.com/jupyterhub/ltiauthenticator/releases/tag/1.6.3