HighFix available
krb5 — security advisory
MIT Kerberos 5 (aka krb5) before 1.17.2 and 1.18.x before 1.18.3 allows unbounded recursion via an ASN.1-encoded Kerberos message because the lib/krb5/asn.1/asn1_encode.c support for BER indefinite lengths lacks a recursion limit.
- Products
- krb5
- Affected versions
- Not specified
- Fixed versions
- 1.15.5-r1, 1.17.2-r0, 1.18.3-r0
- CVEs
- CVE-2020-28196
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 12:09 UTC · Revision 1
Source evidence
MIT Kerberos 5 (aka krb5) before 1.17.2 and 1.18.x before 1.18.3 allows unbounded recursion via an ASN.1-encoded Kerberos message because the lib/krb5/asn.1/asn1_encode.c support for BER indefinite lengths lacks a recursion limit.
osv:ALPINE-CVE-2020-28196
krb5
Fixed versions: 1.17.2-r0
krb5
Fixed versions: 1.17.2-r0
krb5
Fixed versions: 1.18.3-r0
krb5
Fixed versions: 1.18.3-r0
krb5
Fixed versions: 1.18.3-r0
krb5
Fixed versions: 1.18.3-r0
krb5
Fixed versions: 1.18.3-r0
krb5
Fixed versions: 1.18.3-r0
krb5
Fixed versions: 1.18.3-r0
krb5
Fixed versions: 1.18.3-r0
krb5
Fixed versions: 1.18.3-r0
krb5
Fixed versions: 1.18.3-r0
krb5
Fixed versions: 1.18.3-r0
krb5
Fixed versions: 1.18.3-r0
krb5
Fixed versions: 1.18.3-r0
krb5
Fixed versions: 1.15.5-r1
Complete source record
{
"id": "29c3fd11d698244abeffefcc4ab947242de85bb79c9882c717c6e802f6717f81",
"url": "https://osv.dev/vulnerability/ALPINE-CVE-2020-28196",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "ALPINE-CVE-2020-28196",
"summary": "MIT Kerberos 5 (aka krb5) before 1.17.2 and 1.18.x before 1.18.3 allows unbounded recursion via an ASN.1-encoded Kerberos message because the lib/krb5/asn.1/asn1_encode.c support for BER indefinite lengths lacks a recursion limit.",
"evidence": "osv:ALPINE-CVE-2020-28196",
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{
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},
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{
"value": "1.17.2-r0",
"evidence": "/affected/0/ranges"
}
],
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},
{
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{
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{
"name": {
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"evidence": "/affected/12/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
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],
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},
{
"name": {
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{
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"fixed_versions": [
{
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"affected_versions": []
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],
"severity": "high",
"structured": {
"id": "ALPINE-CVE-2020-28196",
"aliases": [
"ALPINE-CVE-2020-28196"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "1.17.2-r0"
}
]
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],
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},
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{
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{
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],
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"ecosystem": "Alpine:v3.9"
},
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],
"modified": "2026-10-26T11:17:55.165379379Z",
"provider": "osv",
"upstream": [
"CVE-2020-28196"
],
"references": [
"https://security.alpinelinux.org/vuln/CVE-2020-28196"
]
},
"related_cves": [
{
"value": "CVE-2020-28196",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 450590,
"published_at": "2020-11-06T08:15:13.86+00:00"
}