Description (CNA)
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, `coder open app` opens external workspace-app URLs without validating the scheme or host. When an external app URL contains the `$SESSION_TOKEN` placeholder the CLI replaces it with the user's real session token before handing the URL to the OS open handler. Practical exploitation requires the victim to run `coder open app` against a workspace whose external app definition the attacker controls. Only a malicious template author can control external app URLs. The fix in versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2 applies a URL-scheme allowlist in the CLI and limits `$SESSION_TOKEN` substitution to trusted destinations like the web frontend. As a workaround, avoid running `coder open app` for untrusted workspaces.
Affected (CNA)
| Vendor / product | Versions |
|---|---|
| coder / coder | affected >= 2.34.0, < 2.34.2; affected >= 2.33.0, < 2.33.8; affected >= 2.30.0, < 2.32.7; affected < 2.29.17 |
CWE
CWE-522, CWE-601
References
- https://github.com/coder/coder/security/advisories/GHSA-v54h-cp2w-9x4g
- https://github.com/coder/coder/pull/26146
- https://github.com/coder/coder/releases/tag/v2.29.17
- https://github.com/coder/coder/releases/tag/v2.32.7
- https://github.com/coder/coder/releases/tag/v2.33.8
- https://github.com/coder/coder/releases/tag/v2.34.2
ADP enrichment
No English description supplied.
No references supplied.