mystring.c in hybserv in IRCD-Hybrid (aka Hybrid2 IRC Services) 1.9.2 through 1.9.4 allows remote attackers to cause a denial of service (daemon crash) via a ":help \t" private message to the MemoServ service.
| Software | From | Fixed in |
|---|---|---|
| dinko_korunic / hybserv2 | 1.9.2 | 1.9.2.x |
| dinko_korunic / hybserv2 | 1.9.4 | 1.9.4.x |
| dinko_korunic / hybserv2 | 1.9.3 | 1.9.3.x |