Medium
Security advisory
In stroke_socket.c in strongSwan before 5.6.3, a missing packet length check could allow a buffer underflow, which may lead to resource exhaustion and denial of service while reading from the socket.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2018-5388
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 07:33 UTC · Revision 1
Source evidence
In stroke_socket.c in strongSwan before 5.6.3, a missing packet length check could allow a buffer underflow, which may lead to resource exhaustion and denial of service while reading from the socket.
osv:CVE-2018-5388
Complete source record
{
"id": "e980c76818e4daa14c6de33ade9c8dc609d08bbaeca9f8b55fda92806c2c9218",
"url": "https://osv.dev/vulnerability/CVE-2018-5388",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2018-5388",
"summary": "In stroke_socket.c in strongSwan before 5.6.3, a missing packet length check could allow a buffer underflow, which may lead to resource exhaustion and denial of service while reading from the socket.",
"evidence": "osv:CVE-2018-5388",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2018-5388",
"aliases": [
"CVE-2018-5388"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/strongswan/strongswan",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "b2ab0995c11a6074a06e3d8d9a8325dc9e6154a1"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:strongswan:strongswan:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "5.6.3"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"5.6.3rc1",
"5.6.3dr2",
"5.6.3dr1",
"5.6.2",
"5.6.2rc1",
"5.6.2dr4",
"5.6.2dr3",
"5.6.2dr2",
"5.6.2dr1",
"5.6.1",
"5.6.1rc1",
"5.6.1dr3",
"5.6.1dr2",
"5.6.1dr1",
"5.6.0",
"5.6.0rc2",
"5.6.0rc1",
"5.6.0dr4",
"5.6.0dr3",
"5.6.0dr2",
"5.6.0dr1",
"5.5.3",
"5.5.3dr2",
"5.5.3dr1",
"5.5.2",
"5.5.2rc1",
"5.5.2dr7",
"5.5.2dr6",
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"5.5.2dr4",
"5.5.2dr3",
"5.5.2dr2",
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"5.5.1dr5",
"5.5.1dr4",
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"5.5.1dr2",
"5.5.0",
"5.5.1dr1",
"5.5.0rc1",
"5.5.0dr1",
"5.4.1dr4",
"5.4.1dr3",
"5.4.1dr2",
"5.4.1dr1",
"5.4.0",
"5.4.0rc1",
"5.4.0dr8",
"5.4.0dr7",
"5.4.0dr6",
"5.4.0dr5",
"5.4.0dr4",
"5.4.0dr3",
"5.4.0dr2",
"5.4.0dr1",
"5.3.5",
"5.3.4",
"5.3.4rc1",
"5.3.4dr3",
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"5.3.3",
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"5.3.3dr6",
"5.3.3dr5",
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"5.3.2",
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"5.3.0dr1",
"5.2.2",
"5.2.2rc1",
"5.2.2dr1",
"5.2.1",
"5.2.1rc1",
"5.2.1dr1",
"5.2.0",
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"5.2.0dr6",
"5.2.0dr5",
"5.2.0dr4",
"5.2.0dr3",
"5.2.0dr2",
"5.2.0dr1",
"5.1.3",
"5.1.3rc1",
"5.1.3dr1",
"5.1.2",
"5.1.2rc2",
"5.1.2rc1",
"5.1.2dr3",
"5.1.2.dr2",
"5.1.2dr1",
"5.1.1",
"5.1.1rc1",
"5.1.1dr4",
"5.1.1dr3",
"5.1.1dr2",
"5.1.1dr1",
"5.1.0",
"5.1.0rc1",
"5.1.0dr2",
"5.1.0dr1",
"5.0.4",
"5.0.3",
"5.0.3rc1",
"5.0.2",
"5.0.3dr3",
"5.0.3dr2",
"5.0.3dr1",
"5.0.2rc1",
"5.0.2dr4",
"5.0.1",
"5.0.0",
"4.6.3",
"4.6.2",
"4.6.1",
"4.6.0",
"4.5.3",
"4.5.2",
"4.5.1",
"4.5.0",
"4.4.1",
"4.3.6",
"4.4.0",
"4.3.5",
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"4.3.4",
"4.3.3",
"4.3.2",
"4.3.1",
"4.2.14",
"4.3.0",
"4.2.13",
"4.2.12",
"4.2.11",
"4.2.10",
"4.2.9",
"4.2.8",
"4.2.7",
"4.2.6",
"4.2.5",
"4.2.4",
"4.2.3",
"4.2.2",
"4.2.1",
"4.2.0",
"4.1.11",
"4.1.10",
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"4.1.3",
"4.1.2",
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"4.1.0",
"4.0.7",
"4.0.6",
"4.0.5",
"4.0.4",
"4.0.3",
"4.0.2",
"4.0.1",
"4.0.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-5388.json"
}
}
],
"modified": "2026-10-24T10:30:54.707170869Z",
"provider": "osv",
"references": [
"https://git.strongswan.org/?p=strongswan.git%3Ba=commitdiff%3Bh=0acd1ab4",
"https://security.gentoo.org/glsa/201811-16",
"https://usn.ubuntu.com/3771-1/",
"https://www.debian.org/security/2018/dsa-4229"
],
"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:18.04:*:*:*:lts:*:*:*"
],
"vendor_product": "canonical:ubuntu_linux",
"extracted_events": [
{
"range": [
{
"introduced": "14.04"
},
{
"last_affected": "14.04"
},
{
"introduced": "16.04"
},
{
"last_affected": "16.04"
},
{
"introduced": "18.04"
},
{
"last_affected": "18.04"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*",
"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
],
"vendor_product": "debian:debian_linux",
"extracted_events": [
{
"range": [
{
"introduced": "8.0"
},
{
"last_affected": "8.0"
},
{
"introduced": "9.0"
},
{
"last_affected": "9.0"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2018-5388",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 438260,
"published_at": "2018-05-31T13:29:00.22+00:00"
}