Critical
Security advisory
Git before 2.14.5, 2.15.x before 2.15.3, 2.16.x before 2.16.5, 2.17.x before 2.17.2, 2.18.x before 2.18.1, and 2.19.x before 2.19.1 allows remote code execution during processing of a recursive "git clone" of a superproject if a .gitmodules file has a URL field beginning with a '-' character.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2018-17456
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 1 Nov 2026, 09:19 UTC · Revision 1
Source evidence
Git before 2.14.5, 2.15.x before 2.15.3, 2.16.x before 2.16.5, 2.17.x before 2.17.2, 2.18.x before 2.18.1, and 2.19.x before 2.19.1 allows remote code execution during processing of a recursive "git clone" of a superproject if a .gitmodules file has a URL field beginning with a '-' character.
osv:CVE-2018-17456
Complete source record
{
"id": "6752c99bd65605b6c4c1a8182428679f650ee76d532ecc33ab3899e5ae0f21fc",
"url": "https://osv.dev/vulnerability/CVE-2018-17456",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "CVE-2018-17456",
"summary": "Git before 2.14.5, 2.15.x before 2.15.3, 2.16.x before 2.16.5, 2.17.x before 2.17.2, 2.18.x before 2.18.1, and 2.19.x before 2.19.1 allows remote code execution during processing of a recursive \"git clone\" of a superproject if a .gitmodules file has a URL field beginning with a '-' character.",
"evidence": "osv:CVE-2018-17456",
"products": [],
"severity": "critical",
"structured": {
"id": "CVE-2018-17456",
"aliases": [
"CVE-2018-17456"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/git-for-windows/git",
"type": "GIT",
"events": [
{
"introduced": "1d4361b0f344188ab5eec6dcea01f61a3a3a1670"
},
{
"fixed": "cae598d9980661a978e2df4fb338518f7bf09572"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:git-scm:git:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "2.19.0"
},
{
"fixed": "2.19.1"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
"v2.19.0"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-17456.json"
}
},
{
"ranges": [
{
"repo": "https://github.com/git/git",
"type": "GIT",
"events": [
{
"introduced": "4384e3cde2ce8ecd194202e171ae16333d241326"
},
{
"fixed": "d0832b2847aa9669c09397c5639d7fe56abaf9fc"
},
{
"introduced": "cb5918aa0d50f50e83787f65c2ddc3dcb10159fe"
},
{
"fixed": "924c623e1c71b98da608f980a97f9730c021ba44"
},
{
"introduced": "2512f15446149235156528dafbe75930c712b29e"
},
{
"fixed": "27d05d1a1a62273aa3749f4d0ab8a126ef11ff66"
},
{
"introduced": "468165c1d8a442994a825f3684528361727cd8c0"
},
{
"fixed": "6e9e91e9cae74cd7feb9300563d40361b2b17dd2"
},
{
"introduced": "53f9a3e157dbbc901a02ac2c73346d375e24978c"
},
{
"fixed": "268fbcd172cdb306e8a3e7143cc16677c963d6cd"
},
{
"introduced": "1d4361b0f344188ab5eec6dcea01f61a3a3a1670"
},
{
"fixed": "cae598d9980661a978e2df4fb338518f7bf09572"
},
{
"fixed": "1a7fd1fb2998002da6e9ff2ee46e1bdd25ee8404"
},
{
"fixed": "a124133e1e6ab5c7a9fef6d0e6bcb084e3455b46"
}
],
"database_specific": {
"extracted_events": [
{
"cpe": "cpe:2.3:a:git-scm:git:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "2.14.0"
},
{
"fixed": "2.14.5"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:git-scm:git:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "2.15.0"
},
{
"fixed": "2.15.3"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:git-scm:git:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "2.16.0"
},
{
"fixed": "2.16.5"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:git-scm:git:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "2.17.0"
},
{
"fixed": "2.17.2"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:git-scm:git:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "2.18.0"
},
{
"fixed": "2.18.1"
}
],
"source": "CPE_RANGE"
},
{
"cpe": "cpe:2.3:a:git-scm:git:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "2.19.0"
},
{
"fixed": "2.19.1"
}
],
"source": "CPE_RANGE"
},
{
"range": [
{
"fixed": "1a7fd1fb2998002da6e9ff2ee46e1bdd25ee8404"
}
],
"source": "REFERENCES_COMMIT"
},
{
"range": [
{
"fixed": "a124133e1e6ab5c7a9fef6d0e6bcb084e3455b46"
}
],
"source": "REFERENCES_COMMIT"
}
]
}
}
],
"versions": [
"v2.15.0",
"v2.17.0",
"v2.18.0",
"v2.19.0",
"v2.17.1",
"v2.16.4",
"v2.15.2",
"v2.14.4",
"v2.16.3",
"v2.14.3",
"v2.16.2",
"v2.16.1",
"v2.16.0",
"v2.15.1",
"v2.14.2",
"v2.14.0",
"v2.14.1"
],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2018-17456.json",
"vanir_signatures": [
{
"id": "CVE-2018-17456-2df45b27",
"digest": {
"length": 653,
"function_hash": "280767856758277171414092295284574468787"
},
"source": "https://github.com/git/git/commit/1a7fd1fb2998002da6e9ff2ee46e1bdd25ee8404",
"target": {
"file": "fsck.c",
"function": "fsck_gitmodules_fn"
},
"deprecated": false,
"signature_type": "Function",
"signature_version": "v1"
},
{
"id": "CVE-2018-17456-6395f845",
"digest": {
"length": 464,
"function_hash": "74687755865234334360883501852567920378"
},
"source": "https://github.com/git/git/commit/a124133e1e6ab5c7a9fef6d0e6bcb084e3455b46",
"target": {
"file": "fsck.c",
"function": "fsck_gitmodules_fn"
},
"deprecated": false,
"signature_type": "Function",
"signature_version": "v1"
},
{
"id": "CVE-2018-17456-f3198db8",
"digest": {
"threshold": 0.9,
"line_hashes": [
"61187277327173978608487490955699247805",
"322478933031989535159482901598085121490",
"105640845193175585999041621410241546937",
"320863403475869972817195883113195046675",
"112056197659761133531585212977590424954",
"186663816293050747954242156545984267682",
"206904128480667008530182138888978574630",
"191728292391714541701984138567608141284"
]
},
"source": "https://github.com/git/git/commit/1a7fd1fb2998002da6e9ff2ee46e1bdd25ee8404",
"target": {
"file": "fsck.c"
},
"deprecated": false,
"signature_type": "Line",
"signature_version": "v1"
},
{
"id": "CVE-2018-17456-ff58f248",
"digest": {
"threshold": 0.9,
"line_hashes": [
"217918380924176957102810654075341599196",
"117753730928290908950277960920988579234",
"238564133705298630809711888480831625193",
"40793998524149642212331206026820467726",
"131744534305363149181561143635993325041",
"118269845443441089115293841204093565177",
"154178865154027729581994095520201329671",
"45981377794252269677761437338334550314"
]
},
"source": "https://github.com/git/git/commit/a124133e1e6ab5c7a9fef6d0e6bcb084e3455b46",
"target": {
"file": "fsck.c"
},
"deprecated": false,
"signature_type": "Line",
"signature_version": "v1"
}
],
"vanir_signatures_modified": "2026-10-24T14:12:16Z"
}
}
],
"modified": "2026-10-24T14:12:16.653039007Z",
"provider": "osv",
"references": [
"https://access.redhat.com/errata/RHSA-2018:3408",
"https://access.redhat.com/errata/RHSA-2018:3505",
"https://access.redhat.com/errata/RHSA-2018:3541",
"https://access.redhat.com/errata/RHSA-2020:0316",
"https://marc.info/?l=git&m=153875888916397&w=2",
"https://seclists.org/bugtraq/2019/Mar/30",
"https://usn.ubuntu.com/3791-1/",
"https://www.debian.org/security/2018/dsa-4311",
"https://www.openwall.com/lists/oss-security/2018/10/06/3",
"https://github.com/git/git/commit/1a7fd1fb2998002da6e9ff2ee46e1bdd25ee8404",
"https://github.com/git/git/commit/a124133e1e6ab5c7a9fef6d0e6bcb084e3455b46",
"https://www.exploit-db.com/exploits/45548/",
"https://www.exploit-db.com/exploits/45631/"
],
"provider_metadata": {
"unresolved_ranges": [
{
"cpes": [
"cpe:2.3:a:git-scm:git:*:*:*:*:*:*:*:*"
],
"vendor_product": "git-scm:git",
"extracted_events": [
{
"range": [
{
"introduced": "2.14.0"
},
{
"fixed": "2.14.5"
},
{
"introduced": "2.15.0"
},
{
"fixed": "2.15.3"
},
{
"introduced": "2.16.0"
},
{
"fixed": "2.16.5"
},
{
"introduced": "2.17.0"
},
{
"fixed": "2.17.2"
},
{
"introduced": "2.18.0"
},
{
"fixed": "2.18.1"
}
],
"source": "CPE_RANGE"
}
]
},
{
"cpes": [
"cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:lts:*:*:*",
"cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*",
"cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*"
],
"vendor_product": "canonical:ubuntu_linux",
"extracted_events": [
{
"range": [
{
"introduced": "14.04"
},
{
"last_affected": "14.04"
},
{
"introduced": "16.04"
},
{
"last_affected": "16.04"
},
{
"introduced": "18.04"
},
{
"last_affected": "18.04"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
],
"vendor_product": "debian:debian_linux",
"extracted_events": [
{
"range": [
{
"introduced": "9.0"
},
{
"last_affected": "9.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:a:redhat:ansible_tower:3.3:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:ansible_tower",
"extracted_events": [
{
"range": [
{
"introduced": "3.3"
},
{
"last_affected": "3.3"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:redhat:enterprise_linux:6.0:*:*:*:*:*:*:*",
"cpe:2.3:o:redhat:enterprise_linux:6.7:*:*:*:*:*:*:*",
"cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*",
"cpe:2.3:o:redhat:enterprise_linux:7.3:*:*:*:*:*:*:*",
"cpe:2.3:o:redhat:enterprise_linux:7.4:*:*:*:*:*:*:*",
"cpe:2.3:o:redhat:enterprise_linux:7.5:*:*:*:*:*:*:*",
"cpe:2.3:o:redhat:enterprise_linux:7.6:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux",
"extracted_events": [
{
"range": [
{
"introduced": "6.0"
},
{
"last_affected": "6.0"
},
{
"introduced": "6.7"
},
{
"last_affected": "6.7"
},
{
"introduced": "7.0"
},
{
"last_affected": "7.0"
},
{
"introduced": "7.3"
},
{
"last_affected": "7.3"
},
{
"introduced": "7.4"
},
{
"last_affected": "7.4"
},
{
"introduced": "7.5"
},
{
"last_affected": "7.5"
},
{
"introduced": "7.6"
},
{
"last_affected": "7.6"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux_desktop",
"extracted_events": [
{
"range": [
{
"introduced": "7.0"
},
{
"last_affected": "7.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux_server",
"extracted_events": [
{
"range": [
{
"introduced": "7.0"
},
{
"last_affected": "7.0"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:redhat:enterprise_linux_server_aus:7.6:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux_server_aus",
"extracted_events": [
{
"range": [
{
"introduced": "7.6"
},
{
"last_affected": "7.6"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:redhat:enterprise_linux_server_eus:7.6:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux_server_eus",
"extracted_events": [
{
"range": [
{
"introduced": "7.6"
},
{
"last_affected": "7.6"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:redhat:enterprise_linux_server_tus:7.6:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux_server_tus",
"extracted_events": [
{
"range": [
{
"introduced": "7.6"
},
{
"last_affected": "7.6"
}
],
"source": "CPE_STRING"
}
]
},
{
"cpes": [
"cpe:2.3:o:redhat:enterprise_linux_workstation:7.0:*:*:*:*:*:*:*"
],
"vendor_product": "redhat:enterprise_linux_workstation",
"extracted_events": [
{
"range": [
{
"introduced": "7.0"
},
{
"last_affected": "7.0"
}
],
"source": "CPE_STRING"
}
]
}
]
}
},
"related_cves": [
{
"value": "CVE-2018-17456",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": "/severity/0/score"
},
"source_id": "core-osv",
"document_id": 443380,
"published_at": "2018-10-06T14:29:00.3+00:00"
}