Medium
Security advisory
usrsctp before 2019-12-20 has out-of-bounds reads in sctp_load_addresses_from_init.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2019-20503
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 12:29 UTC · Revision 1
Source evidence
usrsctp before 2019-12-20 has out-of-bounds reads in sctp_load_addresses_from_init.
osv:CVE-2019-20503
Complete source record
{
"id": "828ee4d21403e0a888921c97ac95e210a5f725c5ead7e5dfd5cf68dc7f90dbb6",
"url": "https://osv.dev/vulnerability/CVE-2019-20503",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2019-20503",
"summary": "usrsctp before 2019-12-20 has out-of-bounds reads in sctp_load_addresses_from_init.",
"evidence": "osv:CVE-2019-20503",
"products": [],
"severity": "medium",
"structured": {
"id": "CVE-2019-20503",
"aliases": [
"CVE-2019-20503"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/sctplab/usrsctp",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "f1de842428b6d97c424e0d4b40bb4a25bd91b7ec"
},
{
"fixed": "790a7a2555aefb392a5a69923f1e9d17b4968467"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:usrsctp_project:usrsctp:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "0.9.4.0"
}
],
"source": "CPE_RANGE"
},
{
"range": [
{
"fixed": "790a7a2555aefb392a5a69923f1e9d17b4968467"
}
],
"source": "REFERENCES_COMMIT"
}
]
}
}
],
"versions": [
"0.9.3.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-20503.json",
"vanir_signatures": [
{
"id": "CVE-2019-20503-14ff5ff7",
"digest": {
"threshold": 0.9,
"line_hashes": [
"327730508206728550863753806873793731736",
"232271758629531299930137668846449714744",
"194005753297318196458770335547941487347",
"86204924904057636553596664040784693774",
"244136754859619190609903659491420283679",
"44612721252499536122830739299996825008",
"116186934364462999016852279057551526709",
"64501329213993218393816168186692126019",
"119328532300576277392225218027534876256",
"329598022706840916657844249803604086365",
"176396067618788986641177387171929621588"
]
},
"source": "https://github.com/sctplab/usrsctp/commit/790a7a2555aefb392a5a69923f1e9d17b4968467",
"target": {
"file": "usrsctplib/netinet/sctp_pcb.c"
},
"deprecated": false,
"signature_type": "Line",
"signature_version": "v1"
},
{
"id": "CVE-2019-20503-185f67a0",
"digest": {
"length": 3188,
"function_hash": "27420102985421191217555899899753575960"
},
"source": "https://github.com/sctplab/usrsctp/commit/790a7a2555aefb392a5a69923f1e9d17b4968467",
"target": {
"file": "usrsctplib/netinet/sctp_auth.c",
"function": "sctp_auth_get_cookie_params"
},
"deprecated": false,
"signature_type": "Function",
"signature_version": "v1"
},
{
"id": "CVE-2019-20503-e574742e",
"digest": {
"threshold": 0.9,
"line_hashes": [
"198649497057395982509242331217339772045",
"326714267827621994314007627938541425994",
"200687103341371863484723060369228893508",
"35232636956357906578787539674949587156",
"293811026459325849753854165102556642130",
"187752912983013076529152616624826225304",
"177037905624134339009325707825459025466"
]
},
"source": "https://github.com/sctplab/usrsctp/commit/790a7a2555aefb392a5a69923f1e9d17b4968467",
"target": {
"file": "usrsctplib/netinet/sctp_auth.c"
},
"deprecated": false,
"signature_type": "Line",
"signature_version": "v1"
},
{
"id": "CVE-2019-20503-e903d135",
"digest": {
"length": 12999,
"function_hash": "72565663288024329373879027215936898435"
},
"source": "https://github.com/sctplab/usrsctp/commit/790a7a2555aefb392a5a69923f1e9d17b4968467",
"target": {
"file": "usrsctplib/netinet/sctp_pcb.c",
"function": "sctp_load_addresses_from_init"
},
"deprecated": false,
"signature_type": "Function",
"signature_version": "v1"
}
],
"vanir_signatures_modified": "2026-10-20T13:43:03Z"
}
}
],
"modified": "2026-10-20T13:43:03.738024506Z",
"provider": "osv",
"references": [
"https://access.redhat.com/errata/RHSA-2020:0815",
"https://access.redhat.com/errata/RHSA-2020:0816",
"https://access.redhat.com/errata/RHSA-2020:0819",
"https://access.redhat.com/errata/RHSA-2020:0820",
"https://chromereleases.googleblog.com/2020/03/stable-channel-update-for-desktop_18.html",
"https://crbug.com/1059349",
"https://lists.debian.org/debian-lts-announce/2020/03/msg00013.html",
"https://lists.debian.org/debian-lts-announce/2020/03/msg00023.html",
"https://lists.debian.org/debian-lts-announce/2023/07/msg00003.html",
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2DDNOAGIX5D77TTHT6YPMVJ5WTXTCQEI/",
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/6IOHSO6BUKC6I66J5PZOMAGFVJ66ZS57/",
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JWANFIR3PYAL5RJQ4AO3ZS2DYMSF2ZGZ/",
"https://security.gentoo.org/glsa/202003-02",
"https://security.gentoo.org/glsa/202003-10",
"https://support.apple.com/HT211168",
"https://support.apple.com/HT211171",
"https://support.apple.com/HT211175",
"https://support.apple.com/HT211177",
"https://support.apple.com/kb/HT211168",
"https://support.apple.com/kb/HT211171",
"https://support.apple.com/kb/HT211175",
"https://support.apple.com/kb/HT211177",
"https://usn.ubuntu.com/4299-1/",
"https://usn.ubuntu.com/4328-1/",
"https://usn.ubuntu.com/4335-1/",
"https://www.debian.org/security/2020/dsa-4639",
"https://www.debian.org/security/2020/dsa-4642",
"https://www.debian.org/security/2020/dsa-4645",
"https://bugs.chromium.org/p/project-zero/issues/detail?id=1992",
"https://github.com/sctplab/usrsctp/commit/790a7a2555aefb392a5a69923f1e9d17b4968467"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*",
"cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:esm:*:*:*",
"cpe:2.3:o:canonical:ubuntu_linux:19.10:*:*:*:*:*:*:*"
],
"vendor_product": "canonical:ubuntu_linux",
"extracted_events": [
{
"range": [
{
"introduced": "16.04"
},
{
"last_affected": "16.04"
},
{
"introduced": "18.04"
},
{
"last_affected": "18.04"
},
{
"introduced": "19.10"
},
{
"last_affected": "19.10"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
"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"
},
{
"introduced": "10.0"
},
{
"last_affected": "10.0"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2019-20503",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 387991,
"published_at": "2020-03-06T20:15:12.47+00:00"
}