Vulnerability-Lookup

OESA-2021-1230 (CVE-2021-3560)

Vulnerability from osv_openeuler – Published: 2021-06-22 11:04 – Updated: 2026-08-06 11:04 – Source website

Summary

polkit security update

Details

polkit is a toolkit for defining and handling authorizations. It is used for allowing unprivileged processes to speak to privileged processes.

Security Fix(es):

A flaw was found in polkit. When a requesting process disconnects from dbus-daemon just before the call to polkit_system_bus_name_get_creds_sync starts, the process cannot get a unique uid and pid of the process and it cannot verify the privileges of the requesting process. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.(CVE-2021-3560)

Severity

7.8 (High)


                    
                      CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

References

URL

Type

	https://openeuler.org/en/security/safety-bulletin…	ADVISORY
	https://nvd.nist.gov/vuln/detail/CVE-2021-3560	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "polkit-debuginfo-0.116-7.oe1.aarch64.rpm",
          "polkit-devel-0.116-7.oe1.aarch64.rpm",
          "polkit-debugsource-0.116-7.oe1.aarch64.rpm",
          "polkit-0.116-7.oe1.aarch64.rpm",
          "polkit-libs-0.116-7.oe1.aarch64.rpm"
        ],
        "noarch": [
          "polkit-help-0.116-7.oe1.noarch.rpm"
        ],
        "src": [
          "polkit-0.116-7.oe1.src.rpm"
        ],
        "x86_64": [
          "polkit-devel-0.116-7.oe1.x86_64.rpm",
          "polkit-libs-0.116-7.oe1.x86_64.rpm",
          "polkit-0.116-7.oe1.x86_64.rpm",
          "polkit-debugsource-0.116-7.oe1.x86_64.rpm",
          "polkit-debuginfo-0.116-7.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP1",
        "name": "polkit",
        "purl": "pkg:rpm/openEuler/polkit\u0026distro=openEuler-20.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.116-7.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "polkit is a toolkit for defining and handling authorizations. It is used for allowing unprivileged processes to speak to privileged processes.\r\n\r\nSecurity Fix(es):\r\n\r\nA flaw was found in polkit. When a requesting process disconnects from dbus-daemon just before the call to polkit_system_bus_name_get_creds_sync starts, the process cannot get a unique uid and pid of the process and it cannot verify the privileges of the requesting process. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.(CVE-2021-3560)",
  "id": "OESA-2021-1230",
  "modified": "2026-08-06T11:04:28Z",
  "published": "2021-06-22T11:04:28Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1230"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-3560"
    }
  ],
  "schema_version": "1.7.2",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "polkit security update",
  "upstream": [
    "CVE-2021-3560"
  ]
}

CVE-2021-3560 (GCVE-0-2021-3560)

Vulnerability from cvelistv5 – Published: 2022-02-16 00:00 – Updated: 2025-10-21 23:15

Summary

It was found that polkit could be tricked into bypassing the credential checks for D-Bus requests, elevating the privileges of the requestor to the root user. This flaw could be used by an unprivileged local attacker to, for example, create a new local administrator. The highest threat from this vulnerability is to data confidentiality and integrity as well as system availability.

Severity

7.8 (High)


                        
                          CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

SSVC

Exploitation: active Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-01-29 21:24 UTC

CWE

CWE-863

Assigner

redhat redhat root

References

5 references

URL	Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1961710
https://github.blog/2021-06-10-privilege-escalati…
http://packetstormsecurity.com/files/172836/polki…
http://packetstormsecurity.com/files/172846/Faceb…
https://www.cisa.gov/known-exploited-vulnerabilit…	government-resource

Impacted products

1 product

Vendor	Product	Version
n/a	polkit	Affected: polkit 0.119

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T17:01:06.571Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
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        },
        "references": [
          {
            "tags": [
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            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1961710"
          },
          {
            "tags": [
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            ],
            "url": "https://github.blog/2021-06-10-privilege-escalation-polkit-root-on-linux-with-bug/"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "http://packetstormsecurity.com/files/172836/polkit-Authentication-Bypass.html"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "http://packetstormsecurity.com/files/172846/Facebook-Fizz-Denial-Of-Service.html"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "cvssV3_1": {
              "attackComplexity": "LOW",
              "attackVector": "LOCAL",
              "availabilityImpact": "HIGH",
              "baseScore": 7.8,
              "baseSeverity": "HIGH",
              "confidentialityImpact": "HIGH",
              "integrityImpact": "HIGH",
              "privilegesRequired": "LOW",
              "scope": "UNCHANGED",
              "userInteraction": "NONE",
              "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
              "version": "3.1"
            }
          },
          {
            "other": {
              "content": {
                "id": "CVE-2021-3560",
                "options": [
                  {
                    "Exploitation": "active"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-01-29T21:24:12.585039Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          },
          {
            "other": {
              "content": {
                "dateAdded": "2023-05-12",
                "reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-3560"
              },
              "type": "kev"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-10-21T23:15:46.259Z",
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        },
        "references": [
          {
            "tags": [
              "government-resource"
            ],
            "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-3560"
          }
        ],
        "timeline": [
          {
            "lang": "en",
            "time": "2023-05-12T00:00:00.000Z",
            "value": "CVE-2021-3560 added to CISA KEV"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "polkit",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
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          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
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        }
      ],
      "problemTypes": [
        {
          "descriptions": [
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              "description": "CWE-863",
              "lang": "en",
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      "references": [
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          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1961710"
        },
        {
          "url": "https://github.blog/2021-06-10-privilege-escalation-polkit-root-on-linux-with-bug/"
        },
        {
          "url": "http://packetstormsecurity.com/files/172836/polkit-Authentication-Bypass.html"
        },
        {
          "url": "http://packetstormsecurity.com/files/172846/Facebook-Fizz-Denial-Of-Service.html"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2021-3560",
    "datePublished": "2022-02-16T00:00:00.000Z",
    "dateReserved": "2021-05-20T00:00:00.000Z",
    "dateUpdated": "2025-10-21T23:15:46.259Z",
    "state": "PUBLISHED"
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  "dataVersion": "5.1"
}

Sightings

Author	Source	Type	Date	Other

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.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

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Action not permitted

OESA-2021-1230 (CVE-2021-3560)

CVE-2021-3560 (GCVE-0-2021-3560)

Tags

Sightings

Nomenclature

Related by attack behaviour