Critical
Security advisory
In LibTomCrypt through 1.18.2, the der_decode_utf8_string function (in der_decode_utf8_string.c) does not properly detect certain invalid UTF-8 sequences. This allows context-dependent attackers to cause a denial of service (out-of-bounds read and crash) or read information from other memory locations via carefully crafted DER-encoded data.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2019-17362
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 10:38 UTC · Revision 1
Source evidence
In LibTomCrypt through 1.18.2, the der_decode_utf8_string function (in der_decode_utf8_string.c) does not properly detect certain invalid UTF-8 sequences. This allows context-dependent attackers to cause a denial of service (out-of-bounds read and crash) or read information from other memory locations via carefully crafted DER-encoded data.
osv:CVE-2019-17362
Complete source record
{
"id": "94b8d473684fbe8c83e022224776295e1e166f36bb0f070b84c72d8ffd20ffb1",
"url": "https://osv.dev/vulnerability/CVE-2019-17362",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2019-17362",
"summary": "In LibTomCrypt through 1.18.2, the der_decode_utf8_string function (in der_decode_utf8_string.c) does not properly detect certain invalid UTF-8 sequences. This allows context-dependent attackers to cause a denial of service (out-of-bounds read and crash) or read information from other memory locations via carefully crafted DER-encoded data.",
"evidence": "osv:CVE-2019-17362",
"products": [],
"severity": "critical",
"structured": {
"id": "CVE-2019-17362",
"aliases": [
"CVE-2019-17362"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/libtom/libtomcrypt",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"last_affected": "7e7eb695d581782f04b24dc444cbfde86af59853"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:libtom:libtomcrypt:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"last_affected": "1.18.2"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"v1.18.2",
"v1.18.1",
"v1.18.0",
"1.17",
"1.16",
"1.15",
"1.14",
"1.13",
"1.12",
"1.11",
"1.10",
"1.09",
"1.08",
"1.07",
"1.06",
"1.05",
"1.04",
"1.03",
"1.02",
"1.01",
"1.00",
"0.99",
"0.98",
"0.97b",
"0.97a",
"0.97",
"0.96",
"0.95",
"0.94",
"0.93",
"0.92",
"0.91",
"0.90",
"0.89",
"0.88",
"0.87",
"0.86",
"0.85",
"0.84",
"0.83",
"0.82",
"0.81",
"0.80",
"0.79",
"0.78",
"0.77",
"0.76",
"0.75"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2019-17362.json"
}
}
],
"modified": "2026-10-20T10:50:49.349973777Z",
"provider": "osv",
"references": [
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/47YP5SXQ4RY6KMTK2HI5ZZR244XKRMCZ/",
"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/YU5OMCY3PX54YVI4FMNDEENHDJZJ3RJW/",
"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/47YP5SXQ4RY6KMTK2HI5ZZR244XKRMCZ/",
"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/YU5OMCY3PX54YVI4FMNDEENHDJZJ3RJW/",
"https://lists.debian.org/debian-lts-announce/2019/10/msg00010.html",
"https://vuldb.com/?id.142995",
"https://github.com/libtom/libtomcrypt/pull/508",
"https://github.com/libtom/libtomcrypt/issues/507"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*"
],
"vendor_product": "debian:debian_linux",
"extracted_events": [
{
"range": [
{
"introduced": "8.0"
},
{
"last_affected": "8.0"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2019-17362",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 382210,
"published_at": "2019-10-09T01:15:10.13+00:00"
}