MediumFix available
etcd — security advisory
In etcd before versions 3.3.23 and 3.4.10, it is possible to have an entry index greater then the number of entries in the ReadAll method in wal/wal.go. This could cause issues when WAL entries are being read during consensus as an arbitrary etcd consensus participant could go down from a runtime panic when reading the entry.
- Products
- etcd
- Affected versions
- 2.2.0+dfsg-2, 2.2.1+dfsg-1, 2.2.2+dfsg-1, 2.2.2+dfsg-2, 2.2.3+dfsg-1, 2.2.5+dfsg-1, 2.2.5+dfsg-1ubuntu1, 3.1.0-1, 3.2.17+dfsg-1, 3.2.26+dfsg-3, 3.2.26+dfsg-4, 3.2.26+dfsg-6, 3.2.9+dfsg-2, 3.2.9+dfsg-3, 3.3.25+dfsg-6, 3.3.25+dfsg-7, 3.3.25+dfsg-7ubuntu0.22.04.1, 3.3.25+dfsg-7ubuntu0.22.04.1+esm1, 3.3.25+dfsg-7ubuntu0.22.04.2, 3.3.25+dfsg-7ubuntu0.22.04.2+esm1, 3.3.25+dfsg-7ubuntu0.22.04.2+esm2, 3.3.25+dfsg-7ubuntu0.22.04.2+esm3, 3.4.23-4ubuntu2, 3.4.30-1, 3.4.30-1build1, 3.4.30-1ubuntu0.24.04.1, 3.4.30-1ubuntu0.24.04.2, 3.4.30-1ubuntu0.24.04.2+esm1, 3.4.30-1ubuntu0.24.04.3, 3.4.30-1ubuntu0.24.04.3+esm1, 3.4.30-1ubuntu0.24.04.3+esm2, 3.5.16-10, 3.5.16-10ubuntu0.26.04.1~esm1, 3.5.16-4, 3.5.30-2
- Fixed versions
- 3.2.17+dfsg-1ubuntu0.1~esm1, 3.2.26+dfsg-6ubuntu0.1
- CVEs
- CVE-2020-15112
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 00:34 UTC · Revision 1
Source evidence
In etcd before versions 3.3.23 and 3.4.10, it is possible to have an entry index greater then the number of entries in the ReadAll method in wal/wal.go. This could cause issues when WAL entries are being read during consensus as an arbitrary etcd consensus participant could go down from a runtime panic when reading the entry.
osv:UBUNTU-CVE-2020-15112
etcd
Fixed versions: Not specified
etcd
Fixed versions: 3.2.17+dfsg-1ubuntu0.1~esm1
etcd
Fixed versions: 3.2.26+dfsg-6ubuntu0.1
etcd
Fixed versions: Not specified
etcd
Fixed versions: Not specified
etcd
Fixed versions: Not specified
etcd
Fixed versions: Not specified
etcd
Fixed versions: Not specified
Complete source record
{
"id": "66e512c740f7a1e527b79536311f441d6a4a8801b802b82de3e5f6a0a7b06b33",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2020-15112",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2020-15112",
"summary": "In etcd before versions 3.3.23 and 3.4.10, it is possible to have an entry index greater then the number of entries in the ReadAll method in wal/wal.go. This could cause issues when WAL entries are being read during consensus as an arbitrary etcd consensus participant could go down from a runtime panic when reading the entry.",
"evidence": "osv:UBUNTU-CVE-2020-15112",
"products": [
{
"name": {
"value": "etcd",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2.2.0+dfsg-2",
"evidence": "/affected/0/versions"
},
{
"value": "2.2.1+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.2.2+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.2.2+dfsg-2",
"evidence": "/affected/0/versions"
},
{
"value": "2.2.3+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.2.5+dfsg-1",
"evidence": "/affected/0/versions"
},
{
"value": "2.2.5+dfsg-1ubuntu1",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "etcd",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.2.17+dfsg-1ubuntu0.1~esm1",
"evidence": "/affected/1/ranges"
}
],
"affected_versions": [
{
"value": "3.1.0-1",
"evidence": "/affected/1/versions"
},
{
"value": "3.2.9+dfsg-2",
"evidence": "/affected/1/versions"
},
{
"value": "3.2.9+dfsg-3",
"evidence": "/affected/1/versions"
},
{
"value": "3.2.17+dfsg-1",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "etcd",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "3.2.26+dfsg-6ubuntu0.1",
"evidence": "/affected/2/ranges"
}
],
"affected_versions": [
{
"value": "3.2.26+dfsg-3",
"evidence": "/affected/2/versions"
},
{
"value": "3.2.26+dfsg-4",
"evidence": "/affected/2/versions"
},
{
"value": "3.2.26+dfsg-6",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "etcd",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.3.25+dfsg-6",
"evidence": "/affected/3/versions"
},
{
"value": "3.3.25+dfsg-7",
"evidence": "/affected/3/versions"
},
{
"value": "3.3.25+dfsg-7ubuntu0.22.04.1",
"evidence": "/affected/3/versions"
},
{
"value": "3.3.25+dfsg-7ubuntu0.22.04.1+esm1",
"evidence": "/affected/3/versions"
},
{
"value": "3.3.25+dfsg-7ubuntu0.22.04.2",
"evidence": "/affected/3/versions"
},
{
"value": "3.3.25+dfsg-7ubuntu0.22.04.2+esm1",
"evidence": "/affected/3/versions"
},
{
"value": "3.3.25+dfsg-7ubuntu0.22.04.2+esm2",
"evidence": "/affected/3/versions"
},
{
"value": "3.3.25+dfsg-7ubuntu0.22.04.2+esm3",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "etcd",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.4.23-4ubuntu2",
"evidence": "/affected/4/versions"
},
{
"value": "3.4.30-1",
"evidence": "/affected/4/versions"
},
{
"value": "3.4.30-1build1",
"evidence": "/affected/4/versions"
},
{
"value": "3.4.30-1ubuntu0.24.04.1",
"evidence": "/affected/4/versions"
},
{
"value": "3.4.30-1ubuntu0.24.04.2",
"evidence": "/affected/4/versions"
},
{
"value": "3.4.30-1ubuntu0.24.04.2+esm1",
"evidence": "/affected/4/versions"
},
{
"value": "3.4.30-1ubuntu0.24.04.3",
"evidence": "/affected/4/versions"
},
{
"value": "3.4.30-1ubuntu0.24.04.3+esm1",
"evidence": "/affected/4/versions"
},
{
"value": "3.4.30-1ubuntu0.24.04.3+esm2",
"evidence": "/affected/4/versions"
}
]
},
{
"name": {
"value": "etcd",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.5.16-4",
"evidence": "/affected/5/versions"
}
]
},
{
"name": {
"value": "etcd",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.5.16-10",
"evidence": "/affected/6/versions"
},
{
"value": "3.5.30-2",
"evidence": "/affected/6/versions"
}
]
},
{
"name": {
"value": "etcd",
"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "3.5.16-4",
"evidence": "/affected/7/versions"
},
{
"value": "3.5.16-10",
"evidence": "/affected/7/versions"
},
{
"value": "3.5.16-10ubuntu0.26.04.1~esm1",
"evidence": "/affected/7/versions"
}
]
}
],
"severity": "medium",
"structured": {
"id": "UBUNTU-CVE-2020-15112",
"aliases": [
"UBUNTU-CVE-2020-15112"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
},
{
"type": "Ubuntu",
"score": "medium"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "etcd",
"purl": "pkg:deb/ubuntu/etcd?arch=source&distro=xenial",
"ecosystem": "Ubuntu:16.04:LTS"
},
"versions": [
"2.2.0+dfsg-2",
"2.2.1+dfsg-1",
"2.2.2+dfsg-1",
"2.2.2+dfsg-2",
"2.2.3+dfsg-1",
"2.2.5+dfsg-1",
"2.2.5+dfsg-1ubuntu1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-15112.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "etcd",
"binary_version": "2.2.5+dfsg-1ubuntu1"
},
{
"binary_name": "golang-etcd-server-dev",
"binary_version": "2.2.5+dfsg-1ubuntu1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.2.17+dfsg-1ubuntu0.1~esm1"
}
]
}
],
"package": {
"name": "etcd",
"purl": "pkg:deb/ubuntu/etcd?arch=source&distro=esm-apps%2Fbionic",
"ecosystem": "Ubuntu:Pro:18.04:LTS"
},
"versions": [
"3.1.0-1",
"3.2.9+dfsg-2",
"3.2.9+dfsg-3",
"3.2.17+dfsg-1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-15112.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "etcd",
"binary_version": "3.2.17+dfsg-1ubuntu0.1~esm1"
},
{
"binary_name": "etcd-client",
"binary_version": "3.2.17+dfsg-1ubuntu0.1~esm1"
},
{
"binary_name": "etcd-server",
"binary_version": "3.2.17+dfsg-1ubuntu0.1~esm1"
},
{
"binary_name": "golang-etcd-server-dev",
"binary_version": "3.2.17+dfsg-1ubuntu0.1~esm1"
}
],
"availability": "Available with Ubuntu Pro: https://ubuntu.com/pro"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "3.2.26+dfsg-6ubuntu0.1"
}
]
}
],
"package": {
"name": "etcd",
"purl": "pkg:deb/ubuntu/etcd?arch=source&distro=focal",
"ecosystem": "Ubuntu:20.04:LTS"
},
"versions": [
"3.2.26+dfsg-3",
"3.2.26+dfsg-4",
"3.2.26+dfsg-6"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-15112.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "etcd",
"binary_version": "3.2.26+dfsg-6ubuntu0.1"
},
{
"binary_name": "etcd-client",
"binary_version": "3.2.26+dfsg-6ubuntu0.1"
},
{
"binary_name": "etcd-server",
"binary_version": "3.2.26+dfsg-6ubuntu0.1"
},
{
"binary_name": "golang-etcd-server-dev",
"binary_version": "3.2.26+dfsg-6ubuntu0.1"
}
],
"availability": "No subscription required"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "etcd",
"purl": "pkg:deb/ubuntu/etcd?arch=source&distro=esm-apps%2Fjammy",
"ecosystem": "Ubuntu:Pro:22.04:LTS"
},
"versions": [
"3.3.25+dfsg-6",
"3.3.25+dfsg-7",
"3.3.25+dfsg-7ubuntu0.22.04.1",
"3.3.25+dfsg-7ubuntu0.22.04.1+esm1",
"3.3.25+dfsg-7ubuntu0.22.04.2",
"3.3.25+dfsg-7ubuntu0.22.04.2+esm1",
"3.3.25+dfsg-7ubuntu0.22.04.2+esm2",
"3.3.25+dfsg-7ubuntu0.22.04.2+esm3"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-15112.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "etcd",
"binary_version": "3.3.25+dfsg-7ubuntu0.22.04.2+esm3"
},
{
"binary_name": "etcd-client",
"binary_version": "3.3.25+dfsg-7ubuntu0.22.04.2+esm3"
},
{
"binary_name": "etcd-server",
"binary_version": "3.3.25+dfsg-7ubuntu0.22.04.2+esm3"
},
{
"binary_name": "golang-etcd-server-dev",
"binary_version": "3.3.25+dfsg-7ubuntu0.22.04.2+esm3"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "etcd",
"purl": "pkg:deb/ubuntu/etcd?arch=source&distro=esm-apps%2Fnoble",
"ecosystem": "Ubuntu:Pro:24.04:LTS"
},
"versions": [
"3.4.23-4ubuntu2",
"3.4.30-1",
"3.4.30-1build1",
"3.4.30-1ubuntu0.24.04.1",
"3.4.30-1ubuntu0.24.04.2",
"3.4.30-1ubuntu0.24.04.2+esm1",
"3.4.30-1ubuntu0.24.04.3",
"3.4.30-1ubuntu0.24.04.3+esm1",
"3.4.30-1ubuntu0.24.04.3+esm2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-15112.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "etcd-client",
"binary_version": "3.4.30-1ubuntu0.24.04.3+esm2"
},
{
"binary_name": "etcd-server",
"binary_version": "3.4.30-1ubuntu0.24.04.3+esm2"
},
{
"binary_name": "golang-etcd-server-dev",
"binary_version": "3.4.30-1ubuntu0.24.04.3+esm2"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "etcd",
"purl": "pkg:deb/ubuntu/etcd?arch=source&distro=questing",
"ecosystem": "Ubuntu:25.10"
},
"versions": [
"3.5.16-4"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-15112.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "etcd-client",
"binary_version": "3.5.16-4"
},
{
"binary_name": "etcd-server",
"binary_version": "3.5.16-4"
},
{
"binary_name": "golang-etcd-server-dev",
"binary_version": "3.5.16-4"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "etcd",
"purl": "pkg:deb/ubuntu/etcd?arch=source&distro=stonking",
"ecosystem": "Ubuntu:26.10"
},
"versions": [
"3.5.16-10",
"3.5.30-2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-15112.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "etcd-client",
"binary_version": "3.5.30-2"
},
{
"binary_name": "etcd-server",
"binary_version": "3.5.30-2"
},
{
"binary_name": "golang-etcd-server-dev",
"binary_version": "3.5.30-2"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "etcd",
"purl": "pkg:deb/ubuntu/etcd?arch=source&distro=esm-apps%2Fresolute",
"ecosystem": "Ubuntu:Pro:26.04:LTS"
},
"versions": [
"3.5.16-4",
"3.5.16-10",
"3.5.16-10ubuntu0.26.04.1~esm1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-15112.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "etcd-client",
"binary_version": "3.5.16-10ubuntu0.26.04.1~esm1"
},
{
"binary_name": "etcd-server",
"binary_version": "3.5.16-10ubuntu0.26.04.1~esm1"
},
{
"binary_name": "golang-etcd-server-dev",
"binary_version": "3.5.16-10ubuntu0.26.04.1~esm1"
}
]
}
}
],
"modified": "2026-10-17T12:55:44.783898648Z",
"provider": "osv",
"upstream": [
"CVE-2020-15112"
],
"references": [
"https://ubuntu.com/security/CVE-2020-15112",
"https://github.com/etcd-io/etcd/security/advisories/GHSA-m332-53r6-2w93",
"https://ubuntu.com/security/notices/USN-5628-1",
"https://ubuntu.com/security/notices/USN-5628-2",
"https://www.cve.org/CVERecord?id=CVE-2020-15112"
]
},
"related_cves": [
{
"value": "CVE-2020-15112",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 354006,
"published_at": "2020-08-05T20:15:00+00:00"
}