8.7 HIGH
- CVSS version (CVSS): 3.1
- Attack Vector (AV): Network (N)
- Attack Complexity (AC): Low (L)
- Privileges Required (PR): High (H)
- User Interaction (UI): None (N)
- Scope (S): Changed (C)
- Confidentiality (C): High (H)
- Integrity (I): High (H)
- Availability (A): None (N)
- Modified Attack Vector (MAV): Network (N)
- Modified Attack Complexity (MAC): Low (L)
- Modified Privileges Required (MPR): High (H)
- Modified User Interaction (MUI): None (N)
- Modified Confidentiality (MC): High (H)
- Modified Scope (MS): Changed (C)
- Modified Integrity (MI): High (H)
- Modified Availability (MA): None (N)
Activity log
- Created & dismissed (max. allowed matches exceeded) suggestion
Coder's workspace app upsert allows cross-workspace agent rebinding via user-controlled app ID
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, `UpsertWorkspaceApp` overwrites an existing app's `agent_id` on a primary-key conflict and `insertAgentApp` accepts the app ID from the provisioner's `CompleteJob` payload without verifying it belongs to the workspace being built. `CompleteJob` runs under `dbauthz.AsProvisionerd` so the authorization layer does not block the cross-workspace upsert. Exploitation requires elevated access as a template author or external provisioner operator. The fix in versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2 verifies that any existing `workspace_apps` row matching the supplied ID belongs to the workspace being built and rejects cross-workspace agent reassignment. No known workarounds are available.
References
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https://github.com/coder/coder/security/advisories/GHSA-9rjw-3gwp-f59v x_refsource_CONFIRM
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https://github.com/coder/coder/pull/26103 x_refsource_MISC
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https://github.com/coder/coder/releases/tag/v2.29.17 x_refsource_MISC
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https://github.com/coder/coder/releases/tag/v2.32.7 x_refsource_MISC
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https://github.com/coder/coder/releases/tag/v2.33.8 x_refsource_MISC
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https://github.com/coder/coder/releases/tag/v2.34.2 x_refsource_MISC
Affected products
- ==>= 2.33.0, < 2.33.8
- ==>= 2.30.0, < 2.32.7
- ==< 2.29.17
- ==>= 2.34.0, < 2.34.2