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 config-ssh` wrote server-supplied SSH settings (`HostnameSuffix`, `SSHConfigOptions`) into the user's `~/.ssh/config` without sanitizing embedded newlines or restricting directives so a malicious or compromised Coder server could inject arbitrary SSH configuration. Practical exploitation requires control of the server-supplied values through a malicious or compromised deployment, a man-in-the-middle position or admin access to the `HostnameSuffix` and `SSHConfigOptions` settings. The fix in versions 2.29.7, 2.32.7, 2.33.8, and 2.34.2 validates `HostnameSuffix` and `SSHConfigOptions` against a strict character set that rejects newlines and other control characters. As a workaround, inspect `coder config-ssh --dry-run` output before applying changes.
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-74, CWE-78
References
- https://github.com/coder/coder/security/advisories/GHSA-mcqq-fqgf-rxwm
- https://github.com/coder/coder/pull/26154
- 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.