ghsa-7452-xqpj-6rpc
Vulnerability from github
Published
2024-01-31 23:14
Modified
2024-06-10 18:39
Severity ?
Summary
moby Access to remapped root allows privilege escalation to real root
Details
Impact
When using --userns-remap, if the root user in the remapped namespace has access to the host filesystem they can modify files under /var/lib/docker/<remapping> that cause writing files with extended privileges.
Patches
Versions 20.10.3 and 19.03.15 contain patches that prevent privilege escalation from remapped user.
Credits
Maintainers would like to thank Alex Chapman for discovering the vulnerability; @awprice, @nathanburrell, @raulgomis, @chris-walz, @erin-jensby, @bassmatt, @mark-adams, @dbaxa for working on it and Zac Ellis for responsibly disclosing it to security@docker.com
{
"affected": [
{
"package": {
"ecosystem": "Go",
"name": "github.com/moby/moby"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "19.3.15"
}
],
"type": "ECOSYSTEM"
}
]
},
{
"package": {
"ecosystem": "Go",
"name": "github.com/moby/moby"
},
"ranges": [
{
"events": [
{
"introduced": "20.10.0-beta1"
},
{
"fixed": "20.10.3"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"aliases": [
"CVE-2021-21284"
],
"database_specific": {
"cwe_ids": [
"CWE-22"
],
"github_reviewed": true,
"github_reviewed_at": "2024-01-31T23:14:25Z",
"nvd_published_at": "2021-02-02T18:15:00Z",
"severity": "MODERATE"
},
"details": "### Impact\n\nWhen using `--userns-remap`, if the root user in the remapped namespace has access to the host filesystem they can modify files under `/var/lib/docker/\u003cremapping\u003e` that cause writing files with extended privileges.\n\n### Patches\n\nVersions 20.10.3 and 19.03.15 contain patches that prevent privilege escalation from remapped user.\n\n### Credits\n\nMaintainers would like to thank Alex Chapman for discovering the vulnerability; @awprice, @nathanburrell, @raulgomis, @chris-walz, @erin-jensby, @bassmatt, @mark-adams, @dbaxa for working on it and Zac Ellis for responsibly disclosing it to security@docker.com",
"id": "GHSA-7452-xqpj-6rpc",
"modified": "2024-06-10T18:39:17Z",
"published": "2024-01-31T23:14:25Z",
"references": [
{
"type": "WEB",
"url": "https://github.com/moby/moby/security/advisories/GHSA-7452-xqpj-6rpc"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2021-21284"
},
{
"type": "WEB",
"url": "https://github.com/moby/moby/commit/64bd4485b3a66a597c02c95f5776395e540b2c7c"
},
{
"type": "WEB",
"url": "https://docs.docker.com/engine/release-notes/#20103"
},
{
"type": "WEB",
"url": "https://github.com/moby/moby/releases/tag/v19.03.15"
},
{
"type": "WEB",
"url": "https://github.com/moby/moby/releases/tag/v20.10.3"
},
{
"type": "WEB",
"url": "https://security.gentoo.org/glsa/202107-23"
},
{
"type": "WEB",
"url": "https://security.netapp.com/advisory/ntap-20210226-0005"
},
{
"type": "WEB",
"url": "https://www.debian.org/security/2021/dsa-4865"
}
],
"schema_version": "1.4.0",
"severity": [
{
"score": "CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N",
"type": "CVSS_V3"
}
],
"summary": "moby Access to remapped root allows privilege escalation to real root"
}
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- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.