HighFix available
gnupg, gnupg1 and 1 more products — security advisory
A flaw was found in the way certificate signatures could be forged using collisions found in the SHA-1 algorithm. An attacker could use this weakness to create forged certificate signatures. This issue affects GnuPG versions before 2.2.18.
- Products
- gnupg, gnupg1, gnupg2
- Affected versions
- 1.4.14-1ubuntu2, 1.4.15-1.1ubuntu1, 1.4.15-1.1ubuntu2, 1.4.15-2ubuntu1, 1.4.16-1ubuntu1, 1.4.16-1ubuntu2, 1.4.16-1ubuntu2.1, 1.4.16-1ubuntu2.3, 1.4.16-1ubuntu2.4, 1.4.16-1ubuntu2.5, 1.4.16-1ubuntu2.6, 1.4.16-1ubuntu2.6+esm1, 1.4.16-1ubuntu2.6+esm2, 1.4.18-7ubuntu1, 1.4.19-6ubuntu1, 1.4.20-1ubuntu1, 1.4.20-1ubuntu2, 1.4.20-1ubuntu3, 1.4.20-1ubuntu3.1, 1.4.20-1ubuntu3.2, 1.4.20-1ubuntu3.3, 1.4.20-1ubuntu3.3+esm2, 1.4.20-1ubuntu3.3+esm3, 1.4.22-1ubuntu1, 1.4.22-3ubuntu1, 1.4.22-3ubuntu2, 1.4.23-1, 1.4.23-1.1build1, 1.4.23-1.1build2, 1.4.23-1.1build4, 1.4.23-2, 1.4.23-3, 1.4.23-3build1, 2.0.28-3ubuntu1, 2.0.28-3ubuntu2, 2.1.11-6ubuntu1, 2.1.11-6ubuntu2, 2.1.11-6ubuntu2.1, 2.1.11-6ubuntu2.1+esm1, 2.1.11-6ubuntu2.1+esm2, 2.1.11-6ubuntu2.1+esm3, 2.1.15-1ubuntu8, 2.2.4-1ubuntu1, 2.2.4-1ubuntu1.1, 2.2.4-1ubuntu1.2
- Fixed versions
- 2.2.4-1ubuntu1.3
- CVEs
- CVE-2019-14855
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 00:33 UTC · Revision 1
Source evidence
A flaw was found in the way certificate signatures could be forged using collisions found in the SHA-1 algorithm. An attacker could use this weakness to create forged certificate signatures. This issue affects GnuPG versions before 2.2.18.
osv:UBUNTU-CVE-2019-14855
gnupg
Fixed versions: Not specified
gnupg
Fixed versions: Not specified
gnupg2
Fixed versions: Not specified
gnupg2
Fixed versions: 2.2.4-1ubuntu1.3
gnupg1
Fixed versions: Not specified
gnupg1
Fixed versions: Not specified
gnupg1
Fixed versions: Not specified
gnupg1
Fixed versions: Not specified
gnupg1
Fixed versions: Not specified
gnupg1
Fixed versions: Not specified
gnupg1
Fixed versions: Not specified
Complete source record
{
"id": "471f490f56753bd46971f9c6e6df15296d5da140e5dafbbc3e07da6f94362270",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2019-14855",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2019-14855",
"summary": "A flaw was found in the way certificate signatures could be forged using collisions found in the SHA-1 algorithm. An attacker could use this weakness to create forged certificate signatures. This issue affects GnuPG versions before 2.2.18.",
"evidence": "osv:UBUNTU-CVE-2019-14855",
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{
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{
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{
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{
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{
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{
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{
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{
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{
"value": "1.4.16-1ubuntu2.6+esm1",
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{
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},
{
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{
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{
"value": "1.4.19-6ubuntu1",
"evidence": "/affected/1/versions"
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{
"value": "1.4.20-1ubuntu1",
"evidence": "/affected/1/versions"
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{
"value": "1.4.20-1ubuntu2",
"evidence": "/affected/1/versions"
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{
"value": "1.4.20-1ubuntu3",
"evidence": "/affected/1/versions"
},
{
"value": "1.4.20-1ubuntu3.1",
"evidence": "/affected/1/versions"
},
{
"value": "1.4.20-1ubuntu3.2",
"evidence": "/affected/1/versions"
},
{
"value": "1.4.20-1ubuntu3.3",
"evidence": "/affected/1/versions"
},
{
"value": "1.4.20-1ubuntu3.3+esm2",
"evidence": "/affected/1/versions"
},
{
"value": "1.4.20-1ubuntu3.3+esm3",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "gnupg2",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "2.0.28-3ubuntu1",
"evidence": "/affected/2/versions"
},
{
"value": "2.0.28-3ubuntu2",
"evidence": "/affected/2/versions"
},
{
"value": "2.1.11-6ubuntu1",
"evidence": "/affected/2/versions"
},
{
"value": "2.1.11-6ubuntu2",
"evidence": "/affected/2/versions"
},
{
"value": "2.1.11-6ubuntu2.1",
"evidence": "/affected/2/versions"
},
{
"value": "2.1.11-6ubuntu2.1+esm1",
"evidence": "/affected/2/versions"
},
{
"value": "2.1.11-6ubuntu2.1+esm2",
"evidence": "/affected/2/versions"
},
{
"value": "2.1.11-6ubuntu2.1+esm3",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "gnupg2",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [
{
"value": "2.2.4-1ubuntu1.3",
"evidence": "/affected/3/ranges"
}
],
"affected_versions": [
{
"value": "2.1.15-1ubuntu8",
"evidence": "/affected/3/versions"
},
{
"value": "2.2.4-1ubuntu1",
"evidence": "/affected/3/versions"
},
{
"value": "2.2.4-1ubuntu1.1",
"evidence": "/affected/3/versions"
},
{
"value": "2.2.4-1ubuntu1.2",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "gnupg1",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.4.22-1ubuntu1",
"evidence": "/affected/4/versions"
},
{
"value": "1.4.22-3ubuntu1",
"evidence": "/affected/4/versions"
},
{
"value": "1.4.22-3ubuntu2",
"evidence": "/affected/4/versions"
}
]
},
{
"name": {
"value": "gnupg1",
"evidence": "/affected/5/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.4.23-1",
"evidence": "/affected/5/versions"
}
]
},
{
"name": {
"value": "gnupg1",
"evidence": "/affected/6/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.4.23-1.1build1",
"evidence": "/affected/6/versions"
}
]
},
{
"name": {
"value": "gnupg1",
"evidence": "/affected/7/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.4.23-1.1build2",
"evidence": "/affected/7/versions"
},
{
"value": "1.4.23-1.1build4",
"evidence": "/affected/7/versions"
},
{
"value": "1.4.23-2",
"evidence": "/affected/7/versions"
}
]
},
{
"name": {
"value": "gnupg1",
"evidence": "/affected/8/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.4.23-3",
"evidence": "/affected/8/versions"
}
]
},
{
"name": {
"value": "gnupg1",
"evidence": "/affected/9/package/name"
},
"prerequisites": [],
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"affected_versions": [
{
"value": "1.4.23-3build1",
"evidence": "/affected/9/versions"
}
]
},
{
"name": {
"value": "gnupg1",
"evidence": "/affected/10/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1.4.23-3",
"evidence": "/affected/10/versions"
},
{
"value": "1.4.23-3build1",
"evidence": "/affected/10/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "UBUNTU-CVE-2019-14855",
"aliases": [
"UBUNTU-CVE-2019-14855"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:N/A:N"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N"
},
{
"type": "Ubuntu",
"score": "low"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "gnupg",
"purl": "pkg:deb/ubuntu/gnupg?arch=source&distro=esm-infra-legacy%2Ftrusty",
"ecosystem": "Ubuntu:Pro:14.04:LTS"
},
"versions": [
"1.4.14-1ubuntu2",
"1.4.15-1.1ubuntu1",
"1.4.15-1.1ubuntu2",
"1.4.15-2ubuntu1",
"1.4.16-1ubuntu1",
"1.4.16-1ubuntu2",
"1.4.16-1ubuntu2.1",
"1.4.16-1ubuntu2.3",
"1.4.16-1ubuntu2.4",
"1.4.16-1ubuntu2.5",
"1.4.16-1ubuntu2.6",
"1.4.16-1ubuntu2.6+esm1",
"1.4.16-1ubuntu2.6+esm2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-14855.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "gnupg",
"binary_version": "1.4.16-1ubuntu2.6+esm2"
},
{
"binary_name": "gnupg-curl",
"binary_version": "1.4.16-1ubuntu2.6+esm2"
},
{
"binary_name": "gpgv",
"binary_version": "1.4.16-1ubuntu2.6+esm2"
}
]
}
},
{
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{
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}
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}
],
"package": {
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"versions": [
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"database_specific": {
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},
"ecosystem_specific": {
"binaries": [
{
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},
{
"binary_name": "gnupg-curl",
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},
{
"binary_name": "gpgv",
"binary_version": "1.4.20-1ubuntu3.3+esm3"
}
]
}
},
{
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{
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}
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],
"package": {
"name": "gnupg2",
"purl": "pkg:deb/ubuntu/gnupg2?arch=source&distro=esm-infra%2Fxenial",
"ecosystem": "Ubuntu:Pro:16.04:LTS"
},
"versions": [
"2.0.28-3ubuntu1",
"2.0.28-3ubuntu2",
"2.1.11-6ubuntu1",
"2.1.11-6ubuntu2",
"2.1.11-6ubuntu2.1",
"2.1.11-6ubuntu2.1+esm1",
"2.1.11-6ubuntu2.1+esm2",
"2.1.11-6ubuntu2.1+esm3"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-14855.json"
},
"ecosystem_specific": {
"binaries": [
{
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},
{
"binary_name": "gnupg-agent",
"binary_version": "2.1.11-6ubuntu2.1+esm3"
},
{
"binary_name": "gnupg2",
"binary_version": "2.1.11-6ubuntu2.1+esm3"
},
{
"binary_name": "gpgsm",
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},
{
"binary_name": "gpgv2",
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},
{
"binary_name": "scdaemon",
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}
]
}
},
{
"ranges": [
{
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{
"introduced": "0"
},
{
"fixed": "2.2.4-1ubuntu1.3"
}
]
}
],
"package": {
"name": "gnupg2",
"purl": "pkg:deb/ubuntu/gnupg2?arch=source&distro=bionic",
"ecosystem": "Ubuntu:18.04:LTS"
},
"versions": [
"2.1.15-1ubuntu8",
"2.2.4-1ubuntu1",
"2.2.4-1ubuntu1.1",
"2.2.4-1ubuntu1.2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-14855.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "dirmngr",
"binary_version": "2.2.4-1ubuntu1.3"
},
{
"binary_name": "gnupg",
"binary_version": "2.2.4-1ubuntu1.3"
},
{
"binary_name": "gnupg-agent",
"binary_version": "2.2.4-1ubuntu1.3"
},
{
"binary_name": "gnupg-l10n",
"binary_version": "2.2.4-1ubuntu1.3"
},
{
"binary_name": "gnupg-utils",
"binary_version": "2.2.4-1ubuntu1.3"
},
{
"binary_name": "gnupg2",
"binary_version": "2.2.4-1ubuntu1.3"
},
{
"binary_name": "gpg",
"binary_version": "2.2.4-1ubuntu1.3"
},
{
"binary_name": "gpg-agent",
"binary_version": "2.2.4-1ubuntu1.3"
},
{
"binary_name": "gpg-wks-client",
"binary_version": "2.2.4-1ubuntu1.3"
},
{
"binary_name": "gpg-wks-server",
"binary_version": "2.2.4-1ubuntu1.3"
},
{
"binary_name": "gpgconf",
"binary_version": "2.2.4-1ubuntu1.3"
},
{
"binary_name": "gpgsm",
"binary_version": "2.2.4-1ubuntu1.3"
},
{
"binary_name": "gpgv",
"binary_version": "2.2.4-1ubuntu1.3"
},
{
"binary_name": "gpgv-static",
"binary_version": "2.2.4-1ubuntu1.3"
},
{
"binary_name": "gpgv-win32",
"binary_version": "2.2.4-1ubuntu1.3"
},
{
"binary_name": "gpgv2",
"binary_version": "2.2.4-1ubuntu1.3"
},
{
"binary_name": "scdaemon",
"binary_version": "2.2.4-1ubuntu1.3"
}
],
"availability": "No subscription required"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "gnupg1",
"purl": "pkg:deb/ubuntu/gnupg1?arch=source&distro=bionic",
"ecosystem": "Ubuntu:18.04:LTS"
},
"versions": [
"1.4.22-1ubuntu1",
"1.4.22-3ubuntu1",
"1.4.22-3ubuntu2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-14855.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "gnupg1",
"binary_version": "1.4.22-3ubuntu2"
},
{
"binary_name": "gnupg1-l10n",
"binary_version": "1.4.22-3ubuntu2"
},
{
"binary_name": "gpgv1",
"binary_version": "1.4.22-3ubuntu2"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
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{
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}
]
}
],
"package": {
"name": "gnupg1",
"purl": "pkg:deb/ubuntu/gnupg1?arch=source&distro=focal",
"ecosystem": "Ubuntu:20.04:LTS"
},
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],
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"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-14855.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "gnupg1",
"binary_version": "1.4.23-1"
},
{
"binary_name": "gnupg1-l10n",
"binary_version": "1.4.23-1"
},
{
"binary_name": "gpgv1",
"binary_version": "1.4.23-1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "gnupg1",
"purl": "pkg:deb/ubuntu/gnupg1?arch=source&distro=jammy",
"ecosystem": "Ubuntu:22.04:LTS"
},
"versions": [
"1.4.23-1.1build1"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-14855.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "gnupg1",
"binary_version": "1.4.23-1.1build1"
},
{
"binary_name": "gnupg1-l10n",
"binary_version": "1.4.23-1.1build1"
},
{
"binary_name": "gpgv1",
"binary_version": "1.4.23-1.1build1"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "gnupg1",
"purl": "pkg:deb/ubuntu/gnupg1?arch=source&distro=noble",
"ecosystem": "Ubuntu:24.04:LTS"
},
"versions": [
"1.4.23-1.1build2",
"1.4.23-1.1build4",
"1.4.23-2"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-14855.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "gnupg1",
"binary_version": "1.4.23-2"
},
{
"binary_name": "gnupg1-l10n",
"binary_version": "1.4.23-2"
},
{
"binary_name": "gpgv1",
"binary_version": "1.4.23-2"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "gnupg1",
"purl": "pkg:deb/ubuntu/gnupg1?arch=source&distro=questing",
"ecosystem": "Ubuntu:25.10"
},
"versions": [
"1.4.23-3"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-14855.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "gnupg1",
"binary_version": "1.4.23-3"
},
{
"binary_name": "gnupg1-l10n",
"binary_version": "1.4.23-3"
},
{
"binary_name": "gpgv1",
"binary_version": "1.4.23-3"
}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
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"purl": "pkg:deb/ubuntu/gnupg1?arch=source&distro=stonking",
"ecosystem": "Ubuntu:26.10"
},
"versions": [
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],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2019/UBUNTU-CVE-2019-14855.json"
},
"ecosystem_specific": {
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"binary_version": "1.4.23-3build1"
},
{
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},
{
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}
]
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
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"ecosystem": "Ubuntu:26.04:LTS"
},
"versions": [
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],
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},
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},
{
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]
}
}
],
"modified": "2026-10-17T12:55:39.095355956Z",
"provider": "osv",
"upstream": [
"CVE-2019-14855"
],
"references": [
"https://ubuntu.com/security/CVE-2019-14855",
"https://eprint.iacr.org/2020/014.pdf",
"https://ubuntu.com/security/notices/USN-4516-1",
"https://www.cve.org/CVERecord?id=CVE-2019-14855"
]
},
"related_cves": [
{
"value": "CVE-2019-14855",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/1/score"
},
"source_id": "core-osv",
"document_id": 353950,
"published_at": "2020-03-20T16:15:00+00:00"
}