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libpod, rootlesskit — security advisory

Type: advisorySources: OSVAdvisory ID: DEBIAN-CVE-2021-20199

Rootless containers run with Podman, receive all traffic with a source IP address of 127.0.0.1 (including from remote hosts). This impacts containerized applications that trust localhost (127.0.01) connections by default and do not require authentication. This issue affects Podman 1.8.0 onwards.

Products
libpod, rootlesskit
Affected versions
Not specified
Fixed versions
0.12.0-1, 3.0.0~rc2+dfsg1-2
CVEs
CVE-2021-20199
Confirmed fixed CVEs
Not specified
Updated in this feed
1 Nov 2026, 01:40 UTC · Revision 1

Source evidence

DEBIAN-CVE-2021-20199

core-osv · Original source

Published 2 Feb 2021, 19:15 UTC

Rootless containers run with Podman, receive all traffic with a source IP address of 127.0.0.1 (including from remote hosts). This impacts containerized applications that trust localhost (127.0.01) connections by default and do not require authentication. This issue affects Podman 1.8.0 onwards.

osv:DEBIAN-CVE-2021-20199

libpod

Fixed versions: 3.0.0~rc2+dfsg1-2

rootlesskit

Fixed versions: 0.12.0-1

rootlesskit

Fixed versions: 0.12.0-1

rootlesskit

Fixed versions: 0.12.0-1

Complete source record
{
  "id": "32a8ed3cabb938c09fc976cdea8aef269fba7799630e0ff21410918c9852b89b",
  "url": "https://osv.dev/vulnerability/DEBIAN-CVE-2021-20199",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "DEBIAN-CVE-2021-20199",
    "summary": "Rootless containers run with Podman, receive all traffic with a source IP address of 127.0.0.1 (including from remote hosts). This impacts containerized applications that trust localhost (127.0.01) connections by default and do not require authentication. This issue affects Podman 1.8.0 onwards.",
    "evidence": "osv:DEBIAN-CVE-2021-20199",
    "products": [
      {
        "name": {
          "value": "libpod",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "3.0.0~rc2+dfsg1-2",
            "evidence": "/affected/0/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "rootlesskit",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "0.12.0-1",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "rootlesskit",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "0.12.0-1",
            "evidence": "/affected/2/ranges"
          }
        ],
        "affected_versions": []
      },
      {
        "name": {
          "value": "rootlesskit",
          "evidence": "/affected/3/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "0.12.0-1",
            "evidence": "/affected/3/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "DEBIAN-CVE-2021-20199",
      "aliases": [
        "DEBIAN-CVE-2021-20199"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "3.0.0~rc2+dfsg1-2"
                }
              ]
            }
          ],
          "package": {
            "name": "libpod",
            "purl": "pkg:deb/debian/libpod?arch=source&distro=bookworm",
            "ecosystem": "Debian:12"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-20199.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "0.12.0-1"
                }
              ]
            }
          ],
          "package": {
            "name": "rootlesskit",
            "purl": "pkg:deb/debian/rootlesskit?arch=source&distro=bookworm",
            "ecosystem": "Debian:12"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-20199.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "0.12.0-1"
                }
              ]
            }
          ],
          "package": {
            "name": "rootlesskit",
            "purl": "pkg:deb/debian/rootlesskit?arch=source&distro=trixie",
            "ecosystem": "Debian:13"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-20199.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                },
                {
                  "fixed": "0.12.0-1"
                }
              ]
            }
          ],
          "package": {
            "name": "rootlesskit",
            "purl": "pkg:deb/debian/rootlesskit?arch=source&distro=forky",
            "ecosystem": "Debian:14"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2021-20199.json"
          },
          "ecosystem_specific": {
            "urgency": "not yet assigned"
          }
        }
      ],
      "modified": "2026-10-23T18:04:49.159151850Z",
      "provider": "osv",
      "upstream": [
        "CVE-2021-20199"
      ],
      "references": [
        "https://security-tracker.debian.org/tracker/CVE-2021-20199"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2021-20199",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 423964,
  "published_at": "2021-02-02T19:15:14+00:00"
}