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.