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CVE-2019-6133 (GCVE-0-2019-6133)

Vulnerability from cvelistv5 – Published: 2019-01-11 14:00 – Updated: 2024-08-04 20:16
VLAI
Summary
In PolicyKit (aka polkit) 0.115, the "start time" protection mechanism can be bypassed because fork() is not atomic, and therefore authorization decisions are improperly cached. This is related to lack of uid checking in polkitbackend/polkitbackendinteractiveauthority.c.
Severity
6.7 (Medium)
CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
CWE
  • n/a
Assigner
References
URL Tags
https://gitlab.freedesktop.org/polkit/polkit/comm… x_refsource_MISC
https://usn.ubuntu.com/3903-2/ vendor-advisoryx_refsource_UBUNTU
https://access.redhat.com/errata/RHSA-2019:0230 vendor-advisoryx_refsource_REDHAT
https://git.kernel.org/linus/7b55851367136b1efd84… x_refsource_MISC
https://lists.debian.org/debian-lts-announce/2019… mailing-listx_refsource_MLIST
https://usn.ubuntu.com/3910-1/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/3901-2/ vendor-advisoryx_refsource_UBUNTU
https://gitlab.freedesktop.org/polkit/polkit/merg… x_refsource_MISC
https://bugs.chromium.org/p/project-zero/issues/d… x_refsource_MISC
https://usn.ubuntu.com/3910-2/ vendor-advisoryx_refsource_UBUNTU
https://access.redhat.com/errata/RHSA-2019:0420 vendor-advisoryx_refsource_REDHAT
https://usn.ubuntu.com/3908-2/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/3901-1/ vendor-advisoryx_refsource_UBUNTU
https://usn.ubuntu.com/3903-1/ vendor-advisoryx_refsource_UBUNTU
http://www.securityfocus.com/bid/106537 vdb-entryx_refsource_BID
https://usn.ubuntu.com/3908-1/ vendor-advisoryx_refsource_UBUNTU
https://support.f5.com/csp/article/K22715344 x_refsource_CONFIRM
https://usn.ubuntu.com/3934-1/ vendor-advisoryx_refsource_UBUNTU
https://access.redhat.com/errata/RHSA-2019:0832 vendor-advisoryx_refsource_REDHAT
https://lists.debian.org/debian-lts-announce/2019… mailing-listx_refsource_MLIST
https://lists.debian.org/debian-lts-announce/2019… mailing-listx_refsource_MLIST
http://lists.opensuse.org/opensuse-security-annou… vendor-advisoryx_refsource_SUSE
https://usn.ubuntu.com/3934-2/ vendor-advisoryx_refsource_UBUNTU
https://access.redhat.com/errata/RHSA-2019:2699 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2019:2978 vendor-advisoryx_refsource_REDHAT
Date Public
2019-01-11 00:00
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                    "matchCriteriaId": "F7016A2A-8365-4F1A-89A2-7A19F2BCAE5B",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:canonical:ubuntu_linux:18.04:*:*:*:lts:*:*:*",
                    "matchCriteriaId": "23A7C53F-B80F-4E6A-AFA9-58EEA84BE11D",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:canonical:ubuntu_linux:18.10:*:*:*:*:*:*:*",
                    "matchCriteriaId": "07C312A0-CD2C-4B9C-B064-6409B25C278F",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In PolicyKit (aka polkit) 0.115, the \"start time\" protection mechanism can be bypassed because fork() is not atomic, and therefore authorization decisions are improperly cached. This is related to lack of uid checking in polkitbackend/polkitbackendinteractiveauthority.c."
          },
          {
            "lang": "es",
            "value": "En PolicyKit (tambi\u00e9n conocido como polkit) 0.115, el mecanismo de protecci\u00f3n \"start time\" puede omitirse debido a que fork() no es at\u00f3mico y, por lo tanto, las decisiones de autorizaci\u00f3n se cachean incorrectamente. Esto est\u00e1 relacionado con la falta de comprobaci\u00f3n de uid en polkitbackend/polkitbackendinteractiveauthority.c."
          }
        ],
        "id": "CVE-2019-6133",
        "lastModified": "2024-11-21T04:46:00.397",
        "metrics": {
          "cvssMetricV2": [
            {
              "acInsufInfo": false,
              "baseSeverity": "MEDIUM",
              "cvssData": {
                "accessComplexity": "MEDIUM",
                "accessVector": "LOCAL",
                "authentication": "NONE",
                "availabilityImpact": "PARTIAL",
                "baseScore": 4.4,
                "confidentialityImpact": "PARTIAL",
                "integrityImpact": "PARTIAL",
                "vectorString": "AV:L/AC:M/Au:N/C:P/I:P/A:P",
                "version": "2.0"
              },
              "exploitabilityScore": 3.4,
              "impactScore": 6.4,
              "obtainAllPrivilege": false,
              "obtainOtherPrivilege": false,
              "obtainUserPrivilege": false,
              "source": "nvd@nist.gov",
              "type": "Primary",
              "userInteractionRequired": true
            }
          ],
          "cvssMetricV30": [
            {
              "cvssData": {
                "attackComplexity": "HIGH",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 6.7,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "HIGH",
                "integrityImpact": "HIGH",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "REQUIRED",
                "vectorString": "CVSS:3.0/AV:L/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H",
                "version": "3.0"
              },
              "exploitabilityScore": 0.8,
              "impactScore": 5.9,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2019-01-11T14:29:00.390",
        "references": [
          {
            "source": "cve@mitre.org",
            "url": "http://lists.opensuse.org/opensuse-security-announce/2019-08/msg00049.html"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Third Party Advisory",
              "VDB Entry"
            ],
            "url": "http://www.securityfocus.com/bid/106537"
          },
          {
            "source": "cve@mitre.org",
            "tags": [
              "Third Party Advisory"
            ],
            "url": "https://access.redhat.com/errata/RHSA-2019:0230"
          },
          {
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            ],
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          {
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            ],
            "url": "https://bugs.chromium.org/p/project-zero/issues/detail?id=1692"
          },
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          },
          {
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              "Third Party Advisory"
            ],
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            ],
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          },
          {
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          },
          {
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            "tags": [
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            ],
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          },
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          },
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          },
          {
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          },
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          },
          {
            "source": "af854a3a-2127-422b-91ae-364da2661108",
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          },
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            "url": "https://usn.ubuntu.com/3934-2/"
          }
        ],
        "sourceIdentifier": "cve@mitre.org",
        "vulnStatus": "Modified",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "CWE-362"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Important",
      "current_release_date": "2026-06-26T23:14:45+00:00",
      "cve": "CVE-2019-6133",
      "id": "CVE-2019-6133",
      "initial_release_date": "2019-01-09T00:00:00+00:00",
      "product_status:fixed": "197",
      "product_status:known_affected": "2",
      "product_status:known_not_affected": "5",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "polkit: Temporary auth hijacking via PID reuse and non-atomic fork",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2019/cve-2019-6133.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "moderate",
      "current_release_date": "2026-09-04T00:55:27Z",
      "cve": "CVE-2019-6133",
      "id": "CVE-2019-6133",
      "initial_release_date": "2023-02-15T04:16:30Z",
      "product_status:known_affected": "466",
      "product_status:known_not_affected": "54",
      "product_status:recommended": "588",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2019-6133",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2019-6133.json",
      "version": "51"
    }
  }
}



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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.


Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.