High
git — security advisory
GIT version 2.15.1 and earlier contains a Input Validation Error vulnerability in Client that can result in problems including messing up terminal configuration to RCE. This attack appear to be exploitable via The user must interact with a malicious git server, (or have their traffic modified in a MITM attack).
- Products
- git
- Affected versions
- 1:2.14.1-1ubuntu4, 1:2.15.1-1ubuntu2, 1:2.17.0-1ubuntu1, 1:2.17.1-1ubuntu0.1, 1:2.17.1-1ubuntu0.10, 1:2.17.1-1ubuntu0.11, 1:2.17.1-1ubuntu0.12, 1:2.17.1-1ubuntu0.13, 1:2.17.1-1ubuntu0.14, 1:2.17.1-1ubuntu0.15, 1:2.17.1-1ubuntu0.16, 1:2.17.1-1ubuntu0.17, 1:2.17.1-1ubuntu0.18, 1:2.17.1-1ubuntu0.18+esm1, 1:2.17.1-1ubuntu0.18+esm2, 1:2.17.1-1ubuntu0.18+esm3, 1:2.17.1-1ubuntu0.18+esm4, 1:2.17.1-1ubuntu0.18+esm6, 1:2.17.1-1ubuntu0.18+esm8, 1:2.17.1-1ubuntu0.3, 1:2.17.1-1ubuntu0.4, 1:2.17.1-1ubuntu0.5, 1:2.17.1-1ubuntu0.6, 1:2.17.1-1ubuntu0.7, 1:2.17.1-1ubuntu0.8, 1:2.17.1-1ubuntu0.9, 1:2.20.1-2ubuntu1, 1:2.24.0-1ubuntu1, 1:2.24.0-1ubuntu2, 1:2.25.0-1ubuntu1, 1:2.25.1-1ubuntu1, 1:2.25.1-1ubuntu2, 1:2.25.1-1ubuntu3, 1:2.25.1-1ubuntu3.1, 1:2.25.1-1ubuntu3.10, 1:2.25.1-1ubuntu3.11, 1:2.25.1-1ubuntu3.12, 1:2.25.1-1ubuntu3.13, 1:2.25.1-1ubuntu3.14, 1:2.25.1-1ubuntu3.14+esm1, 1:2.25.1-1ubuntu3.14+esm2, 1:2.25.1-1ubuntu3.14+esm3, 1:2.25.1-1ubuntu3.14+esm4, 1:2.25.1-1ubuntu3.14+esm5, 1:2.25.1-1ubuntu3.14+esm6, 1:2.25.1-1ubuntu3.2, 1:2.25.1-1ubuntu3.3, 1:2.25.1-1ubuntu3.4, 1:2.25.1-1ubuntu3.5, 1:2.25.1-1ubuntu3.6, 1:2.25.1-1ubuntu3.7, 1:2.25.1-1ubuntu3.8, 1:2.32.0-1ubuntu1, 1:2.33.1-1ubuntu1, 1:2.34.1-1ubuntu1, 1:2.34.1-1ubuntu1.1, 1:2.34.1-1ubuntu1.10, 1:2.34.1-1ubuntu1.11, 1:2.34.1-1ubuntu1.12, 1:2.34.1-1ubuntu1.13, 1:2.34.1-1ubuntu1.14, 1:2.34.1-1ubuntu1.15, 1:2.34.1-1ubuntu1.16, 1:2.34.1-1ubuntu1.17, 1:2.34.1-1ubuntu1.18, 1:2.34.1-1ubuntu1.2, 1:2.34.1-1ubuntu1.4, 1:2.34.1-1ubuntu1.5, 1:2.34.1-1ubuntu1.6, 1:2.34.1-1ubuntu1.8, 1:2.34.1-1ubuntu1.9, 1:2.40.1-1ubuntu1, 1:2.43.0-1ubuntu1, 1:2.43.0-1ubuntu5, 1:2.43.0-1ubuntu6, 1:2.43.0-1ubuntu7, 1:2.43.0-1ubuntu7.1, 1:2.43.0-1ubuntu7.2, 1:2.43.0-1ubuntu7.3, 1:2.43.0-1ubuntu7.4, 1:2.5.0-1, 1:2.6.2-1, 1:2.6.3-1, 1:2.6.4-1, 1:2.7.0-1, 1:2.7.0~rc3-1, 1:2.7.3-0ubuntu1, 1:2.7.4-0ubuntu1, 1:2.7.4-0ubuntu1.1, 1:2.7.4-0ubuntu1.10, 1:2.7.4-0ubuntu1.10+esm1, 1:2.7.4-0ubuntu1.10+esm10, 1:2.7.4-0ubuntu1.10+esm11, 1:2.7.4-0ubuntu1.10+esm13, 1:2.7.4-0ubuntu1.10+esm3, 1:2.7.4-0ubuntu1.10+esm4, 1:2.7.4-0ubuntu1.10+esm5, 1:2.7.4-0ubuntu1.10+esm6, 1:2.7.4-0ubuntu1.10+esm7, 1:2.7.4-0ubuntu1.10+esm8, 1:2.7.4-0ubuntu1.10+esm9, 1:2.7.4-0ubuntu1.2, 1:2.7.4-0ubuntu1.3, 1:2.7.4-0ubuntu1.4, 1:2.7.4-0ubuntu1.5, 1:2.7.4-0ubuntu1.6, 1:2.7.4-0ubuntu1.7, 1:2.7.4-0ubuntu1.8, 1:2.7.4-0ubuntu1.9
- Fixed versions
- Not specified
- CVEs
- CVE-2018-1000021
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 31 Oct 2026, 08:45 UTC · Revision 1
Source evidence
GIT version 2.15.1 and earlier contains a Input Validation Error vulnerability in Client that can result in problems including messing up terminal configuration to RCE. This attack appear to be exploitable via The user must interact with a malicious git server, (or have their traffic modified in a MITM attack).
osv:UBUNTU-CVE-2018-1000021
git
Fixed versions: Not specified
git
Fixed versions: Not specified
git
Fixed versions: Not specified
git
Fixed versions: Not specified
git
Fixed versions: Not specified
Complete source record
{
"id": "6a3224c7cef59bf448e63e2da4e8dd5e8c1f74846beafe397599e9a26ff89257",
"url": "https://osv.dev/vulnerability/UBUNTU-CVE-2018-1000021",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "UBUNTU-CVE-2018-1000021",
"summary": "GIT version 2.15.1 and earlier contains a Input Validation Error vulnerability in Client that can result in problems including messing up terminal configuration to RCE. This attack appear to be exploitable via The user must interact with a malicious git server, (or have their traffic modified in a MITM attack).",
"evidence": "osv:UBUNTU-CVE-2018-1000021",
"products": [
{
"name": {
"value": "git",
"evidence": "/affected/0/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1:2.5.0-1",
"evidence": "/affected/0/versions"
},
{
"value": "1:2.6.2-1",
"evidence": "/affected/0/versions"
},
{
"value": "1:2.6.3-1",
"evidence": "/affected/0/versions"
},
{
"value": "1:2.6.4-1",
"evidence": "/affected/0/versions"
},
{
"value": "1:2.7.0~rc3-1",
"evidence": "/affected/0/versions"
},
{
"value": "1:2.7.0-1",
"evidence": "/affected/0/versions"
},
{
"value": "1:2.7.3-0ubuntu1",
"evidence": "/affected/0/versions"
},
{
"value": "1:2.7.4-0ubuntu1",
"evidence": "/affected/0/versions"
},
{
"value": "1:2.7.4-0ubuntu1.1",
"evidence": "/affected/0/versions"
},
{
"value": "1:2.7.4-0ubuntu1.2",
"evidence": "/affected/0/versions"
},
{
"value": "1:2.7.4-0ubuntu1.3",
"evidence": "/affected/0/versions"
},
{
"value": "1:2.7.4-0ubuntu1.4",
"evidence": "/affected/0/versions"
},
{
"value": "1:2.7.4-0ubuntu1.5",
"evidence": "/affected/0/versions"
},
{
"value": "1:2.7.4-0ubuntu1.6",
"evidence": "/affected/0/versions"
},
{
"value": "1:2.7.4-0ubuntu1.7",
"evidence": "/affected/0/versions"
},
{
"value": "1:2.7.4-0ubuntu1.8",
"evidence": "/affected/0/versions"
},
{
"value": "1:2.7.4-0ubuntu1.9",
"evidence": "/affected/0/versions"
},
{
"value": "1:2.7.4-0ubuntu1.10",
"evidence": "/affected/0/versions"
},
{
"value": "1:2.7.4-0ubuntu1.10+esm1",
"evidence": "/affected/0/versions"
},
{
"value": "1:2.7.4-0ubuntu1.10+esm3",
"evidence": "/affected/0/versions"
},
{
"value": "1:2.7.4-0ubuntu1.10+esm4",
"evidence": "/affected/0/versions"
},
{
"value": "1:2.7.4-0ubuntu1.10+esm5",
"evidence": "/affected/0/versions"
},
{
"value": "1:2.7.4-0ubuntu1.10+esm6",
"evidence": "/affected/0/versions"
},
{
"value": "1:2.7.4-0ubuntu1.10+esm7",
"evidence": "/affected/0/versions"
},
{
"value": "1:2.7.4-0ubuntu1.10+esm8",
"evidence": "/affected/0/versions"
},
{
"value": "1:2.7.4-0ubuntu1.10+esm9",
"evidence": "/affected/0/versions"
},
{
"value": "1:2.7.4-0ubuntu1.10+esm10",
"evidence": "/affected/0/versions"
},
{
"value": "1:2.7.4-0ubuntu1.10+esm11",
"evidence": "/affected/0/versions"
},
{
"value": "1:2.7.4-0ubuntu1.10+esm13",
"evidence": "/affected/0/versions"
}
]
},
{
"name": {
"value": "git",
"evidence": "/affected/1/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1:2.14.1-1ubuntu4",
"evidence": "/affected/1/versions"
},
{
"value": "1:2.15.1-1ubuntu2",
"evidence": "/affected/1/versions"
},
{
"value": "1:2.17.0-1ubuntu1",
"evidence": "/affected/1/versions"
},
{
"value": "1:2.17.1-1ubuntu0.1",
"evidence": "/affected/1/versions"
},
{
"value": "1:2.17.1-1ubuntu0.3",
"evidence": "/affected/1/versions"
},
{
"value": "1:2.17.1-1ubuntu0.4",
"evidence": "/affected/1/versions"
},
{
"value": "1:2.17.1-1ubuntu0.5",
"evidence": "/affected/1/versions"
},
{
"value": "1:2.17.1-1ubuntu0.6",
"evidence": "/affected/1/versions"
},
{
"value": "1:2.17.1-1ubuntu0.7",
"evidence": "/affected/1/versions"
},
{
"value": "1:2.17.1-1ubuntu0.8",
"evidence": "/affected/1/versions"
},
{
"value": "1:2.17.1-1ubuntu0.9",
"evidence": "/affected/1/versions"
},
{
"value": "1:2.17.1-1ubuntu0.10",
"evidence": "/affected/1/versions"
},
{
"value": "1:2.17.1-1ubuntu0.11",
"evidence": "/affected/1/versions"
},
{
"value": "1:2.17.1-1ubuntu0.12",
"evidence": "/affected/1/versions"
},
{
"value": "1:2.17.1-1ubuntu0.13",
"evidence": "/affected/1/versions"
},
{
"value": "1:2.17.1-1ubuntu0.14",
"evidence": "/affected/1/versions"
},
{
"value": "1:2.17.1-1ubuntu0.15",
"evidence": "/affected/1/versions"
},
{
"value": "1:2.17.1-1ubuntu0.16",
"evidence": "/affected/1/versions"
},
{
"value": "1:2.17.1-1ubuntu0.17",
"evidence": "/affected/1/versions"
},
{
"value": "1:2.17.1-1ubuntu0.18",
"evidence": "/affected/1/versions"
},
{
"value": "1:2.17.1-1ubuntu0.18+esm1",
"evidence": "/affected/1/versions"
},
{
"value": "1:2.17.1-1ubuntu0.18+esm2",
"evidence": "/affected/1/versions"
},
{
"value": "1:2.17.1-1ubuntu0.18+esm3",
"evidence": "/affected/1/versions"
},
{
"value": "1:2.17.1-1ubuntu0.18+esm4",
"evidence": "/affected/1/versions"
},
{
"value": "1:2.17.1-1ubuntu0.18+esm6",
"evidence": "/affected/1/versions"
},
{
"value": "1:2.17.1-1ubuntu0.18+esm8",
"evidence": "/affected/1/versions"
}
]
},
{
"name": {
"value": "git",
"evidence": "/affected/2/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1:2.20.1-2ubuntu1",
"evidence": "/affected/2/versions"
},
{
"value": "1:2.24.0-1ubuntu1",
"evidence": "/affected/2/versions"
},
{
"value": "1:2.24.0-1ubuntu2",
"evidence": "/affected/2/versions"
},
{
"value": "1:2.25.0-1ubuntu1",
"evidence": "/affected/2/versions"
},
{
"value": "1:2.25.1-1ubuntu1",
"evidence": "/affected/2/versions"
},
{
"value": "1:2.25.1-1ubuntu2",
"evidence": "/affected/2/versions"
},
{
"value": "1:2.25.1-1ubuntu3",
"evidence": "/affected/2/versions"
},
{
"value": "1:2.25.1-1ubuntu3.1",
"evidence": "/affected/2/versions"
},
{
"value": "1:2.25.1-1ubuntu3.2",
"evidence": "/affected/2/versions"
},
{
"value": "1:2.25.1-1ubuntu3.3",
"evidence": "/affected/2/versions"
},
{
"value": "1:2.25.1-1ubuntu3.4",
"evidence": "/affected/2/versions"
},
{
"value": "1:2.25.1-1ubuntu3.5",
"evidence": "/affected/2/versions"
},
{
"value": "1:2.25.1-1ubuntu3.6",
"evidence": "/affected/2/versions"
},
{
"value": "1:2.25.1-1ubuntu3.7",
"evidence": "/affected/2/versions"
},
{
"value": "1:2.25.1-1ubuntu3.8",
"evidence": "/affected/2/versions"
},
{
"value": "1:2.25.1-1ubuntu3.10",
"evidence": "/affected/2/versions"
},
{
"value": "1:2.25.1-1ubuntu3.11",
"evidence": "/affected/2/versions"
},
{
"value": "1:2.25.1-1ubuntu3.12",
"evidence": "/affected/2/versions"
},
{
"value": "1:2.25.1-1ubuntu3.13",
"evidence": "/affected/2/versions"
},
{
"value": "1:2.25.1-1ubuntu3.14",
"evidence": "/affected/2/versions"
},
{
"value": "1:2.25.1-1ubuntu3.14+esm1",
"evidence": "/affected/2/versions"
},
{
"value": "1:2.25.1-1ubuntu3.14+esm2",
"evidence": "/affected/2/versions"
},
{
"value": "1:2.25.1-1ubuntu3.14+esm3",
"evidence": "/affected/2/versions"
},
{
"value": "1:2.25.1-1ubuntu3.14+esm4",
"evidence": "/affected/2/versions"
},
{
"value": "1:2.25.1-1ubuntu3.14+esm5",
"evidence": "/affected/2/versions"
},
{
"value": "1:2.25.1-1ubuntu3.14+esm6",
"evidence": "/affected/2/versions"
}
]
},
{
"name": {
"value": "git",
"evidence": "/affected/3/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1:2.32.0-1ubuntu1",
"evidence": "/affected/3/versions"
},
{
"value": "1:2.33.1-1ubuntu1",
"evidence": "/affected/3/versions"
},
{
"value": "1:2.34.1-1ubuntu1",
"evidence": "/affected/3/versions"
},
{
"value": "1:2.34.1-1ubuntu1.1",
"evidence": "/affected/3/versions"
},
{
"value": "1:2.34.1-1ubuntu1.2",
"evidence": "/affected/3/versions"
},
{
"value": "1:2.34.1-1ubuntu1.4",
"evidence": "/affected/3/versions"
},
{
"value": "1:2.34.1-1ubuntu1.5",
"evidence": "/affected/3/versions"
},
{
"value": "1:2.34.1-1ubuntu1.6",
"evidence": "/affected/3/versions"
},
{
"value": "1:2.34.1-1ubuntu1.8",
"evidence": "/affected/3/versions"
},
{
"value": "1:2.34.1-1ubuntu1.9",
"evidence": "/affected/3/versions"
},
{
"value": "1:2.34.1-1ubuntu1.10",
"evidence": "/affected/3/versions"
},
{
"value": "1:2.34.1-1ubuntu1.11",
"evidence": "/affected/3/versions"
},
{
"value": "1:2.34.1-1ubuntu1.12",
"evidence": "/affected/3/versions"
},
{
"value": "1:2.34.1-1ubuntu1.13",
"evidence": "/affected/3/versions"
},
{
"value": "1:2.34.1-1ubuntu1.14",
"evidence": "/affected/3/versions"
},
{
"value": "1:2.34.1-1ubuntu1.15",
"evidence": "/affected/3/versions"
},
{
"value": "1:2.34.1-1ubuntu1.16",
"evidence": "/affected/3/versions"
},
{
"value": "1:2.34.1-1ubuntu1.17",
"evidence": "/affected/3/versions"
},
{
"value": "1:2.34.1-1ubuntu1.18",
"evidence": "/affected/3/versions"
}
]
},
{
"name": {
"value": "git",
"evidence": "/affected/4/package/name"
},
"prerequisites": [],
"fixed_versions": [],
"affected_versions": [
{
"value": "1:2.40.1-1ubuntu1",
"evidence": "/affected/4/versions"
},
{
"value": "1:2.43.0-1ubuntu1",
"evidence": "/affected/4/versions"
},
{
"value": "1:2.43.0-1ubuntu5",
"evidence": "/affected/4/versions"
},
{
"value": "1:2.43.0-1ubuntu6",
"evidence": "/affected/4/versions"
},
{
"value": "1:2.43.0-1ubuntu7",
"evidence": "/affected/4/versions"
},
{
"value": "1:2.43.0-1ubuntu7.1",
"evidence": "/affected/4/versions"
},
{
"value": "1:2.43.0-1ubuntu7.2",
"evidence": "/affected/4/versions"
},
{
"value": "1:2.43.0-1ubuntu7.3",
"evidence": "/affected/4/versions"
},
{
"value": "1:2.43.0-1ubuntu7.4",
"evidence": "/affected/4/versions"
}
]
}
],
"severity": "high",
"structured": {
"id": "UBUNTU-CVE-2018-1000021",
"aliases": [
"UBUNTU-CVE-2018-1000021"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L"
},
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"
},
{
"type": "Ubuntu",
"score": "low"
}
],
"affected": [
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
}
]
}
],
"package": {
"name": "git",
"purl": "pkg:deb/ubuntu/git?arch=source&distro=esm-infra%2Fxenial",
"ecosystem": "Ubuntu:Pro:16.04:LTS"
},
"versions": [
"1:2.5.0-1",
"1:2.6.2-1",
"1:2.6.3-1",
"1:2.6.4-1",
"1:2.7.0~rc3-1",
"1:2.7.0-1",
"1:2.7.3-0ubuntu1",
"1:2.7.4-0ubuntu1",
"1:2.7.4-0ubuntu1.1",
"1:2.7.4-0ubuntu1.2",
"1:2.7.4-0ubuntu1.3",
"1:2.7.4-0ubuntu1.4",
"1:2.7.4-0ubuntu1.5",
"1:2.7.4-0ubuntu1.6",
"1:2.7.4-0ubuntu1.7",
"1:2.7.4-0ubuntu1.8",
"1:2.7.4-0ubuntu1.9",
"1:2.7.4-0ubuntu1.10",
"1:2.7.4-0ubuntu1.10+esm1",
"1:2.7.4-0ubuntu1.10+esm3",
"1:2.7.4-0ubuntu1.10+esm4",
"1:2.7.4-0ubuntu1.10+esm5",
"1:2.7.4-0ubuntu1.10+esm6",
"1:2.7.4-0ubuntu1.10+esm7",
"1:2.7.4-0ubuntu1.10+esm8",
"1:2.7.4-0ubuntu1.10+esm9",
"1:2.7.4-0ubuntu1.10+esm10",
"1:2.7.4-0ubuntu1.10+esm11",
"1:2.7.4-0ubuntu1.10+esm13"
],
"database_specific": {
"source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2018/UBUNTU-CVE-2018-1000021.json"
},
"ecosystem_specific": {
"binaries": [
{
"binary_name": "git",
"binary_version": "1:2.7.4-0ubuntu1.10+esm13"
},
{
"binary_name": "git-all",
"binary_version": "1:2.7.4-0ubuntu1.10+esm13"
},
{
"binary_name": "git-arch",
"binary_version": "1:2.7.4-0ubuntu1.10+esm13"
},
{
"binary_name": "git-core",
"binary_version": "1:2.7.4-0ubuntu1.10+esm13"
},
{
"binary_name": "git-cvs",
"binary_version": "1:2.7.4-0ubuntu1.10+esm13"
},
{
"binary_name": "git-daemon-run",
"binary_version": "1:2.7.4-0ubuntu1.10+esm13"
},
{
"binary_name": "git-daemon-sysvinit",
"binary_version": "1:2.7.4-0ubuntu1.10+esm13"
},
{
"binary_name": "git-el",
"binary_version": "1:2.7.4-0ubuntu1.10+esm13"
},
{
"binary_name": "git-email",
"binary_version": "1:2.7.4-0ubuntu1.10+esm13"
},
{
"binary_name": "git-gui",
"binary_version": "1:2.7.4-0ubuntu1.10+esm13"
},
{
"binary_name": "git-man",
"binary_version": "1:2.7.4-0ubuntu1.10+esm13"
},
{
"binary_name": "git-mediawiki",
"binary_version": "1:2.7.4-0ubuntu1.10+esm13"
},
{
"binary_name": "git-svn",
"binary_version": "1:2.7.4-0ubuntu1.10+esm13"
},
{
"binary_name": "gitk",
"binary_version": "1:2.7.4-0ubuntu1.10+esm13"
},
{
"binary_name": "gitweb",
"binary_version": "1:2.7.4-0ubuntu1.10+esm13"
}
]
}
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],
"modified": "2026-10-19T23:30:11.423415043Z",
"provider": "osv",
"upstream": [
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],
"references": [
"https://ubuntu.com/security/CVE-2018-1000021",
"https://public-inbox.org/git/20180205204312.GB104086@aiede.svl.corp.google.com/",
"https://www.cve.org/CVERecord?id=CVE-2018-1000021"
]
},
"related_cves": [
{
"value": "CVE-2018-1000021",
"evidence": "/upstream"
}
],
"security_relevant": true,
"severity_evidence": "/severity/1/score"
},
"source_id": "core-osv",
"document_id": 376851,
"published_at": "2018-02-09T23:29:00+00:00"
}