High
Security advisory
In dnsmasq before 2.78, if the DNS packet size does not match the expected size, the size parameter in a memset call gets a negative value. As it is an unsigned value, memset ends up writing up to 0xffffffff zero's (0xffffffffffffffff in 64 bit platforms), making dnsmasq crash.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2017-13704
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 05:12 UTC · Revision 1
Source evidence
In dnsmasq before 2.78, if the DNS packet size does not match the expected size, the size parameter in a memset call gets a negative value. As it is an unsigned value, memset ends up writing up to 0xffffffff zero's (0xffffffffffffffff in 64 bit platforms), making dnsmasq crash.
osv:CVE-2017-13704
Complete source record
{
"id": "689eb901f93aafba45f1642046079998347e41f094ca9aaa44fcdf6d01ad60ff",
"url": "https://osv.dev/vulnerability/CVE-2017-13704",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2017-13704",
"summary": "In dnsmasq before 2.78, if the DNS packet size does not match the expected size, the size parameter in a memset call gets a negative value. As it is an unsigned value, memset ends up writing up to 0xffffffff zero's (0xffffffffffffffff in 64 bit platforms), making dnsmasq crash.",
"evidence": "osv:CVE-2017-13704",
"products": [],
"severity": "high",
"structured": {
"id": "CVE-2017-13704",
"aliases": [
"CVE-2017-13704"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/infrastructureservices/dnsmasq",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"last_affected": "74ea91531a5f0c6ad8c4bcc5f6bda55bf2c2acb1"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:thekelleys:dnsmasq:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"last_affected": "2.77"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
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"v2.77rc5",
"v2.77rc4",
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"v2.71",
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"v2.70",
"v2.69",
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"v2.68",
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"v2.68rc2",
"v2.68rc1",
"v2.68test2",
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"v2.67",
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"v2.66",
"v2.66rc5",
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"v2.66test1",
"v2.64rc3",
"v2.64",
"v2.65test4",
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"v2.63rc6",
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"v2.61test9",
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"v2.61test7",
"v2.61test6",
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"v2.60",
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"v2.60rc4",
"v2.60rc3",
"v2.60rc2",
"v2.60rc1",
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"v2.60test17",
"v2.60test16",
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"v2.60test14",
"v2.60test13",
"v2.60test12",
"v2.60test11",
"v2.60test10",
"v2.60test9",
"v2.60test8",
"v2.60test7",
"v2.59",
"v2.52",
"v2.51",
"v2.53",
"v2.55",
"v2.56",
"v2.57",
"v2.58",
"v2.44",
"v2.43",
"v2.45",
"v2.46",
"v2.47",
"v2.48",
"v2.49",
"v2.50",
"v2.36",
"v2.35",
"v2.37",
"v2.38",
"v2.39",
"v2.40",
"v2.41",
"v2.42",
"v2.29",
"v2.28",
"v2.30",
"v2.31",
"v2.32",
"v2.33",
"v2.34",
"v2.15",
"v2.14",
"v2.16",
"v2.17",
"v2.18",
"v2.19",
"v2.20",
"v2.21",
"v2.22",
"v2.23",
"v2.24",
"v2.25",
"v2.26",
"v2.27",
"v2.0",
"v2.1",
"v2.10",
"v2.9",
"v2.11",
"v2.12",
"v2.13",
"v2.2",
"v2.3",
"v2.4",
"v2.5",
"v2.6",
"v2.7",
"v2.8"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2017-13704.json"
}
}
],
"modified": "2026-10-24T10:30:25.654511379Z",
"provider": "osv",
"references": [
"https://cert-portal.siemens.com/productcert/pdf/ssa-689071.pdf",
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/4TK6DWC53WSU6633EVZL7H4PCWBYHMHK/",
"https://www.mail-archive.com/dnsmasq-discuss%40lists.thekelleys.org.uk/msg11664.html",
"https://www.mail-archive.com/dnsmasq-discuss%40lists.thekelleys.org.uk/msg11665.html",
"https://www.synology.com/support/security/Synology_SA_17_59_Dnsmasq",
"https://security.googleblog.com/2017/10/behind-masq-yet-more-dns-and-dhcp.html",
"https://access.redhat.com/security/vulnerabilities/3199382"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*",
"cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*",
"cpe:2.3:o:canonical:ubuntu_linux:17.04:*:*:*:*:*:*:*"
],
"vendor_product": "canonical:ubuntu_linux",
"extracted_events": [
{
"range": [
{
"introduced": "14.04"
},
{
"last_affected": "14.04"
},
{
"introduced": "16.04"
},
{
"last_affected": "16.04"
},
{
"introduced": "17.04"
},
{
"last_affected": "17.04"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*",
"cpe:2.3:o:debian:debian_linux:7.1:*:*:*:*:*:*:*",
"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
],
"vendor_product": "debian:debian_linux",
"extracted_events": [
{
"range": [
{
"introduced": "7.0"
},
{
"last_affected": "7.0"
},
{
"introduced": "7.1"
},
{
"last_affected": "7.1"
},
{
"introduced": "9.0"
},
{
"last_affected": "9.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:fedoraproject:fedora:27:*:*:*:*:*:*:*"
],
"vendor_product": "fedoraproject:fedora",
"extracted_events": [
{
"range": [
{
"introduced": "27"
},
{
"last_affected": "27"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:novell:leap:42.2:*:*:*:*:*:*:*",
"cpe:2.3:o:novell:leap:42.3:*:*:*:*:*:*:*"
],
"vendor_product": "novell:leap",
"extracted_events": [
{
"range": [
{
"introduced": "42.2"
},
{
"last_affected": "42.2"
},
{
"introduced": "42.3"
},
{
"last_affected": "42.3"
}
],
"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_workstation:7.0:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux_workstation",
"extracted_events": [
{
"range": [
{
"introduced": "7.0"
},
{
"last_affected": "7.0"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2017-13704",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 431413,
"published_at": "2017-10-03T01:29:01.637+00:00"
}