Gadu-Gadu 7.20 does not properly handle MS-DOS device names in filenames, which allows remote attackers to (1) cause a denial of service (hang) via an image filename of AUX: sent twice (hang), or (2) write to the LPT1 port via a filename of "LPT1:".
| Software | From | Fixed in |
|---|---|---|
| gadu-gadu / gadu-gadu_instant_messenger | 7.20 | 7.20.x |