GHSA-m83q-5wr4-4gfp
SFTPGo improperly sanitizes placeholders in group home directories/key prefixes
Packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| Go | github.com/drakkan/sftpgo/v2 | >= 2.3.0, < 2.7.1 | 2.7.1 |
Details
As written in the advisory (Markdown source, shown as plain text).
### Impact
SFTPGo versions before v2.7.1 contain an input validation issue in the handling of dynamic group paths, for example, home directories or key prefixes.
When a group is configured with a dynamic home directory or key prefix using placeholders like `%username%`, the value replacing the placeholder is not strictly sanitized against relative path components. Consequently, if a user is created with a specially crafted username the resulting path may resolve to a parent directory instead of the intended sub-directory.
### Patches
This issue is fixed in version v2.7.1
References
External links from the advisory. They lead to third-party sites.