Description
Coder allows organizations to provision remote development environments via Terraform. Prior to versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2, the `CreateSubAgent` RPC did not validate a requested app sharing level against the template's `MaxPortSharingLevel` before persisting workspace apps, letting a workspace owner exceed the administrator's configured maximum. Exploitation requires the ability to register sub-agent apps in a workspace the attacker controls. The fix in versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2clamps the sub-agent app sharing level to the template's `MaxPortSharingLevel`. As a workaround, disable wildcard app hostnames (`CODER_WILDCARD_ACCESS_URL`) to block subdomain-based app routing.
Problem types
CWE-862: Missing Authorization
Product status
>= 2.33.0, < 2.33.8
>= 2.30.0, < 2.32.7
< 2.29.17
References
github.com/.../coder/security/advisories/GHSA-x9qq-2qh5-8rxf
github.com/coder/coder/pull/26061
github.com/coder/coder/releases/tag/v2.29.17
github.com/coder/coder/releases/tag/v2.32.7
github.com/coder/coder/releases/tag/v2.33.8
github.com/coder/coder/releases/tag/v2.34.2