The IP parser in tcpdump before 4.9.2 has a buffer over-read in print-ip.c:ip_printroute().
{ "vanir_signatures": [ { "signature_type": "Function", "digest": { "length": 596.0, "function_hash": "123165594716226374072612119953052349352" }, "deprecated": false, "id": "CVE-2017-13022-0362e827", "target": { "function": "ip_printroute", "file": "print-ip.c" }, "signature_version": "v1", "source": "https://github.com/the-tcpdump-group/tcpdump/commit/eee0b04bcfdae319c242b0b8fc3d07029ee65b8c" }, { "signature_type": "Line", "digest": { "threshold": 0.9, "line_hashes": [ "1703503926721153439612063356669374998", "55971060995458297747371627312930637408", "191965866893899249307730362287328951213", "335563951198771229787074253736712471194", "146824962707302787888754114797462037914", "293222358303371640007516707668731196863", "168372040183320671483207524346582011066", "91634231847505838765402727594796801311", "198200953870990064268698389836458319698", "16125893791757920208416590438974946885", "87759674695105364466609514446082999806", "86800151968258324071778690655352783368", "40618759338100395877255223291350189937", "138679264629610268822577515270853755742", "317289161516197162683451545575295577304", "222366130037876000739021390466277659386", "274544525196487618876390350380502766706", "37734716822424090496436291616264790154", "44477331842281623064229501389099786701", "286784534051773562457314809747096614509", "44809046069123694497958311740991151102", "198311724748209008650073301339093956168", "99730768856670468546215193624344741958" ] }, "deprecated": false, "id": "CVE-2017-13022-be0f012a", "target": { "file": "print-ip.c" }, "signature_version": "v1", "source": "https://github.com/the-tcpdump-group/tcpdump/commit/eee0b04bcfdae319c242b0b8fc3d07029ee65b8c" }, { "signature_type": "Function", "digest": { "length": 1226.0, "function_hash": "165226726622269549230475447364557567453" }, "deprecated": false, "id": "CVE-2017-13022-bf791caf", "target": { "function": "ip_optprint", "file": "print-ip.c" }, "signature_version": "v1", "source": "https://github.com/the-tcpdump-group/tcpdump/commit/eee0b04bcfdae319c242b0b8fc3d07029ee65b8c" } ] }