ubuntu-cve-2021-21996
Vulnerability from osv_ubuntu
Published
2021-09-08 15:15
Modified
2026-04-02 04:52
Summary
Details

An issue was discovered in SaltStack Salt before 3003.3. A user who has control of the source, and source_hash URLs can gain full file system access as root on a salt minion.

Severity
7.5 (High)
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "salt-api",
            "binary_version": "2017.7.4+dfsg1-1ubuntu18.04.2+esm1"
          },
          {
            "binary_name": "salt-cloud",
            "binary_version": "2017.7.4+dfsg1-1ubuntu18.04.2+esm1"
          },
          {
            "binary_name": "salt-common",
            "binary_version": "2017.7.4+dfsg1-1ubuntu18.04.2+esm1"
          },
          {
            "binary_name": "salt-master",
            "binary_version": "2017.7.4+dfsg1-1ubuntu18.04.2+esm1"
          },
          {
            "binary_name": "salt-minion",
            "binary_version": "2017.7.4+dfsg1-1ubuntu18.04.2+esm1"
          },
          {
            "binary_name": "salt-proxy",
            "binary_version": "2017.7.4+dfsg1-1ubuntu18.04.2+esm1"
          },
          {
            "binary_name": "salt-ssh",
            "binary_version": "2017.7.4+dfsg1-1ubuntu18.04.2+esm1"
          },
          {
            "binary_name": "salt-syndic",
            "binary_version": "2017.7.4+dfsg1-1ubuntu18.04.2+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "salt",
        "purl": "pkg:deb/ubuntu/salt@2017.7.4+dfsg1-1ubuntu18.04.2+esm1?arch=source\u0026distro=esm-apps/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "2016.11.5+ds-1",
        "2016.11.8+dfsg1-1",
        "2017.7.2+dfsg1-2ubuntu1",
        "2017.7.3+dfsg1-1",
        "2017.7.4+dfsg1-1",
        "2017.7.4+dfsg1-1ubuntu18.04.1",
        "2017.7.4+dfsg1-1ubuntu18.04.2",
        "2017.7.4+dfsg1-1ubuntu18.04.2+esm1"
      ]
    }
  ],
  "aliases": [],
  "details": "An issue was discovered in SaltStack Salt before 3003.3. A user who has control of the source, and source_hash URLs can gain full file system access as root on a salt minion.",
  "id": "UBUNTU-CVE-2021-21996",
  "modified": "2026-04-02T04:52:15Z",
  "published": "2021-09-08T15:15:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-21996"
    },
    {
      "type": "REPORT",
      "url": "https://saltproject.io/security_announcements/salt-security-advisory-2021-sep-02/"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2021-21996"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2021-21996"
  ]
}



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Sightings

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.