Critical
Security advisory
The ISAKMP parser in tcpdump before 4.9.2 has a buffer over-read in print-isakmp.c:isakmp_rfc3948_print().
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2017-12896
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 09:07 UTC · Revision 1
Source evidence
The ISAKMP parser in tcpdump before 4.9.2 has a buffer over-read in print-isakmp.c:isakmp_rfc3948_print().
osv:CVE-2017-12896
Complete source record
{
"id": "880682215fe8c4913fe6ad88876d676f55d0ca5133132ac47f5ecbfcbcb1ac59",
"url": "https://osv.dev/vulnerability/CVE-2017-12896",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2017-12896",
"summary": "The ISAKMP parser in tcpdump before 4.9.2 has a buffer over-read in print-isakmp.c:isakmp_rfc3948_print().",
"evidence": "osv:CVE-2017-12896",
"products": [],
"severity": "critical",
"structured": {
"id": "CVE-2017-12896",
"aliases": [
"CVE-2017-12896"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/the-tcpdump-group/tcpdump",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"last_affected": "993a67c8e648bc8b19881e29a60f41273cfbee7b"
},
{
"fixed": "4e430c6b0d8b7e77c7abca7e7afb0c3e727502f2"
},
{
"fixed": "f76e7feb41a4327d2b0978449bbdafe98d4a3771"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:tcpdump:tcpdump:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"last_affected": "4.9.1"
}
],
"source": "CPE_RANGE"
},
{
"range": [
{
"fixed": "4e430c6b0d8b7e77c7abca7e7afb0c3e727502f2"
}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
"fixed": "f76e7feb41a4327d2b0978449bbdafe98d4a3771"
}
],
"source": "REFERENCES_COMMIT"
}
]
}
}
],
"versions": [
"tcpdump-4.9.1",
"tcpdump-4.9.0",
"tcpdump-4.9.0-bp",
"tcpdump-4.7.0-bp",
"tcpdump-4.6.0-bp",
"tcpdump-4.6.0",
"tcpdump-4.5.0",
"tcpdump-3.8-bp",
"tcpdump-3.7.1",
"tcpdump-3.6.1",
"tcpdump-3.5.1"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-12896.json",
"vanir_signatures": [
{
"id": "CVE-2017-12896-55274087",
"digest": {
"length": 771,
"function_hash": "235700187824518271551597626464413906066"
},
"source": "https://github.com/the-tcpdump-group/tcpdump/commit/f76e7feb41a4327d2b0978449bbdafe98d4a3771",
"target": {
"file": "print-isakmp.c",
"function": "isakmp_rfc3948_print"
},
"deprecated": false,
"signature_type": "Function",
"signature_version": "v1"
},
{
"id": "CVE-2017-12896-df6808a2",
"digest": {
"threshold": 0.9,
"line_hashes": [
"92476039214299902913464049845602499755",
"127476701255543416211591624465891517165",
"77254627758977974949835247697373969547",
"176839869703757769384565147195255420664",
"151147998512336889841084261265686820891",
"82334409732181199188306388935128945223",
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},
"source": "https://github.com/the-tcpdump-group/tcpdump/commit/f76e7feb41a4327d2b0978449bbdafe98d4a3771",
"target": {
"file": "print-isakmp.c"
},
"deprecated": false,
"signature_type": "Line",
"signature_version": "v1"
}
],
"vanir_signatures_modified": "2026-10-24T14:08:59Z"
}
}
],
"modified": "2026-10-24T14:08:59.753979774Z",
"provider": "osv",
"references": [
"https://access.redhat.com/errata/RHEA-2018:0705",
"https://security.gentoo.org/glsa/201709-23",
"https://support.apple.com/HT208221",
"https://github.com/the-tcpdump-group/tcpdump/commit/4e430c6b0d8b7e77c7abca7e7afb0c3e727502f2",
"https://github.com/the-tcpdump-group/tcpdump/commit/f76e7feb41a4327d2b0978449bbdafe98d4a3771"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:a:tcpdump:tcpdump:*:*:*:*:*:*:*:*"
],
"vendor_product": "tcpdump:tcpdump",
"extracted_events": [
{
"range": [
{
"last_affected": "4.9.1"
}
],
"source": "CPE_RANGE"
}
]
},
{
"cpes": [
"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
],
"vendor_product": "debian:debian_linux",
"extracted_events": [
{
"range": [
{
"introduced": "9.0"
},
{
"last_affected": "9.0"
},
{
"introduced": "10.0"
},
{
"last_affected": "10.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux_desktop",
"extracted_events": [
{
"range": [
{
"introduced": "7.0"
},
{
"last_affected": "7.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux_server",
"extracted_events": [
{
"range": [
{
"introduced": "7.0"
},
{
"last_affected": "7.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*",
"cpe:2.3:o:redhat:enterprise_linux_server_aus:7.7:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux_server_aus",
"extracted_events": [
{
"range": [
{
"introduced": "7.6"
},
{
"last_affected": "7.6"
},
{
"introduced": "7.7"
},
{
"last_affected": "7.7"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2017-12896",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 443122,
"published_at": "2017-09-14T06:29:00.327+00:00"
}