The LLDP parser in tcpdump before 4.9.2 could enter an infinite loop due to a bug in print-lldp.c:lldpprivate8021_print().
{ "vanir_signatures": [ { "signature_type": "Function", "target": { "file": "print-lldp.c", "function": "lldp_private_8021_print" }, "signature_version": "v1", "digest": { "length": 5871.0, "function_hash": "1885717028255664028988507052205420652" }, "deprecated": false, "source": "https://github.com/the-tcpdump-group/tcpdump/commit/34cec721d39c76be1e0a600829a7b17bdfb832b6", "id": "CVE-2017-12997-58ea8a65" }, { "signature_type": "Line", "target": { "file": "print-lldp.c" }, "signature_version": "v1", "digest": { "threshold": 0.9, "line_hashes": [ "74544335452402900651937902790664826624", "162434760775406061849094769297440321055", "235121720973665958348604678502699247504", "142543695188466190577486799355006657278", "295400370259204944089056546972592272984", "150842100437704287684774663276946911020", "166407419649807776275491154886288005496", "311871776310507690437950924185119220620", "46000881761558309334053379414877950803", "79061019225880693557119226300733005865" ] }, "deprecated": false, "source": "https://github.com/the-tcpdump-group/tcpdump/commit/34cec721d39c76be1e0a600829a7b17bdfb832b6", "id": "CVE-2017-12997-a06a8984" } ] }