ghsa-v994-f8vw-g7j4
Vulnerability from github
Published
2024-06-10 18:38
Modified
2024-07-03 20:27
Severity
Summary
`docker cp` allows unexpected chmod of host files in Moby Docker Engine
Details
Impact
A bug was found in Moby (Docker Engine) where attempting to copy files using docker cp into a specially-crafted container can result in Unix file permission changes for existing files in the host’s filesystem, widening access to others. This bug does not directly allow files to be read, modified, or executed without an additional cooperating process.
Patches
This bug has been fixed in Moby (Docker Engine) 20.10.9. Users should update to this version as soon as possible. Running containers do not need to be restarted.
Workarounds
Ensure you only run trusted containers.
Credits
The Moby project would like to thank Lei Wang and Ruizhi Xiao for responsibly disclosing this issue in accordance with the Moby security policy.
For more information
If you have any questions or comments about this advisory:
- Open an issue
- Email us at security@docker.com if you think you’ve found a security bug
{
"affected": [
{
"package": {
"ecosystem": "Go",
"name": "github.com/docker/docker"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "20.10.9"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2021-41089"
],
"database_specific": {
"cwe_ids": [
"CWE-281"
],
"github_reviewed": true,
"github_reviewed_at": "2024-06-10T18:38:43Z",
"nvd_published_at": "2021-10-04T21:15:00Z",
"severity": "LOW"
},
"details": "## Impact\nA bug was found in Moby (Docker Engine) where attempting to copy files using `docker cp` into a specially-crafted container can result in Unix file permission changes for existing files in the host\u2019s filesystem, widening access to others. This bug does not directly allow files to be read, modified, or executed without an additional cooperating process.\n\n## Patches\nThis bug has been fixed in Moby (Docker Engine) 20.10.9. Users should update to this version as soon as possible. Running containers do not need to be restarted.\n\n## Workarounds\nEnsure you only run trusted containers.\n\n## Credits\nThe Moby project would like to thank Lei Wang and Ruizhi Xiao for responsibly disclosing this issue in accordance with the \ufeff[Moby security policy](https://github.com/moby/moby/blob/master/SECURITY.md).\n\n## For more information\nIf you have any questions or comments about this advisory:\n\n* [Open an issue](https://github.com/moby/moby/issues/new)\n* Email us at \ufeff security@docker.com \ufeff if you think you\u2019ve found a security bug",
"id": "GHSA-v994-f8vw-g7j4",
"modified": "2024-07-03T20:27:20Z",
"published": "2024-06-10T18:38:43Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/moby/moby/security/advisories/GHSA-v994-f8vw-g7j4"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-41089"
},
{
"type": "WEB",
"url": "https://github.com/moby/moby/commit/bce32e5c93be4caf1a592582155b9cb837fc129a"
},
{
"type": "WEB",
"url": "https://cert-portal.siemens.com/productcert/pdf/ssa-222547.pdf"
},
{
"type": "PACKAGE",
"url": "https://github.com/moby/moby"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/B5Q6G6I4W5COQE25QMC7FJY3I3PAYFBB"
},
{
"type": "WEB",
"url": "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/ZNFADTCHHYWVM6W4NJ6CB4FNFM2VMBIB"
},
{
"type": "WEB",
"url": "https://pkg.go.dev/vuln/GO-2024-2913"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:N/A:N",
"type": "CVSS_V3"
}
],
"summary": "`docker cp` allows unexpected chmod of host files in Moby Docker Engine"
}
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