MediumFix available
libtasn1 — security advisory
GNU Libtasn1-4.13 libtasn1-4.13 version libtasn1-4.13, libtasn1-4.12 contains a DoS, specifically CPU usage will reach 100% when running asn1Paser against the POC due to an issue in _asn1_expand_object_id(p_tree), after a long time, the program will be killed. This attack appears to be exploitable via parsing a crafted file.
- Products
- libtasn1
- Affected versions
- Not specified
- Fixed versions
- 4.12-r4, 4.14-r0
- CVEs
- CVE-2018-1000654
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 21:56 UTC · Revision 1
Source evidence
GNU Libtasn1-4.13 libtasn1-4.13 version libtasn1-4.13, libtasn1-4.12 contains a DoS, specifically CPU usage will reach 100% when running asn1Paser against the POC due to an issue in _asn1_expand_object_id(p_tree), after a long time, the program will be killed. This attack appears to be exploitable via parsing a crafted file.
osv:ALPINE-CVE-2018-1000654
libtasn1
Fixed versions: 4.14-r0
libtasn1
Fixed versions: 4.14-r0
libtasn1
Fixed versions: 4.14-r0
libtasn1
Fixed versions: 4.14-r0
libtasn1
Fixed versions: 4.14-r0
libtasn1
Fixed versions: 4.14-r0
libtasn1
Fixed versions: 4.14-r0
libtasn1
Fixed versions: 4.14-r0
libtasn1
Fixed versions: 4.14-r0
libtasn1
Fixed versions: 4.14-r0
libtasn1
Fixed versions: 4.14-r0
libtasn1
Fixed versions: 4.14-r0
libtasn1
Fixed versions: 4.14-r0
libtasn1
Fixed versions: 4.14-r0
libtasn1
Fixed versions: 4.14-r0
libtasn1
Fixed versions: 4.12-r4
libtasn1
Fixed versions: 4.14-r0
libtasn1
Fixed versions: 4.14-r0
Complete source record
{
"id": "4369ff11ffa1a99c787bdbfaba81ec6592948608fe0f1444e303324e45b86be5",
"url": "https://osv.dev/vulnerability/ALPINE-CVE-2018-1000654",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "ALPINE-CVE-2018-1000654",
"summary": "GNU Libtasn1-4.13 libtasn1-4.13 version libtasn1-4.13, libtasn1-4.12 contains a DoS, specifically CPU usage will reach 100% when running asn1Paser against the POC due to an issue in _asn1_expand_object_id(p_tree), after a long time, the program will be killed. This attack appears to be exploitable via parsing a crafted file.",
"evidence": "osv:ALPINE-CVE-2018-1000654",
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"severity": "medium",
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"aliases": [
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},
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{
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}
],
"package": {
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"purl": "pkg:apk/alpine/libtasn1?arch=source",
"ecosystem": "Alpine:v3.9"
},
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],
"modified": "2026-10-23T17:17:55.157246396Z",
"provider": "osv",
"upstream": [
"CVE-2018-1000654"
],
"references": [
"https://security.alpinelinux.org/vuln/CVE-2018-1000654"
]
},
"related_cves": [
{
"value": "CVE-2018-1000654",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 414947,
"published_at": "2018-08-20T19:31:44.87+00:00"
}