webman/imageSelector.cgi in Synology DiskStation Manager (DSM) 4.0 before 4.0-2259, 4.2 before 4.2-3243, and 4.3 before 4.3-3810 Update 1 allows remote attackers to append data to arbitrary files, and consequently execute arbitrary code, via a pathname in the SLICEUPLOAD X-TMP-FILE HTTP header.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Diskstation_manager | Synology | 4.0 (including) | 4.0 (including) |
| Diskstation_manager | Synology | 4.2 (including) | 4.2 (including) |
| Diskstation_manager | Synology | 4.3 (including) | 4.3 (including) |
| Diskstation_manager | Synology | 4.3-3810 (including) | 4.3-3810 (including) |