Multiple unspecified vulnerabilities in Ethereal 0.9.x up to 0.10.14 allow remote attackers to cause a denial of service (crash from null dereference) via (1) an invalid display filter, or the (2) GSM SMS, (3) ASN.1-based, (4) DCERPC NT, (5) PER, (6) RPC, (7) DCERPC, and (8) ASN.1 dissectors.