updatejail in jailer 0.4 allows local users to overwrite arbitrary files via a symlink attack on a /tmp/#####.updatejail temporary file.
The product attempts to access a file based on the filename, but it does not properly prevent that filename from identifying a link or shortcut that resolves to an unintended resource.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Jailer | Javier_fernandez | 0.4 (including) | 0.4 (including) |
| Jailer | Ubuntu | dapper | * |
| Jailer | Ubuntu | gutsy | * |
| Jailer | Ubuntu | upstream | * |