CVE-2020-12049 (GCVE-0-2020-12049)

Vulnerability from cvelistv5 – Published: 2020-06-08 00:00 – Updated: 2024-08-04 11:48
VLAI
Summary
An issue was discovered in dbus >= 1.3.0 before 1.12.18. The DBusServer in libdbus, as used in dbus-daemon, leaks file descriptors when a message exceeds the per-message file descriptor limit. A local attacker with access to the D-Bus system bus or another system service's private AF_UNIX socket could use this to make the system service reach its file descriptor limit, denying service to subsequent D-Bus clients.
Severity
No CVSS data available.
CWE
  • n/a
Assigner
References
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T11:48:57.950Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://gitlab.freedesktop.org/dbus/dbus/-/issues/294"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://gitlab.freedesktop.org/dbus/dbus/-/tags/dbus-1.13.16"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "http://www.openwall.com/lists/oss-security/2020/06/04/3"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://gitlab.freedesktop.org/dbus/dbus/-/tags/dbus-1.12.18"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://gitlab.freedesktop.org/dbus/dbus/-/tags/dbus-1.10.30"
          },
          {
            "name": "USN-4398-1",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://usn.ubuntu.com/4398-1/"
          },
          {
            "name": "USN-4398-2",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://usn.ubuntu.com/4398-2/"
          },
          {
            "name": "GLSA-202007-46",
            "tags": [
              "vendor-advisory",
              "x_transferred"
            ],
            "url": "https://security.gentoo.org/glsa/202007-46"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "https://securitylab.github.com/advisories/GHSL-2020-057-DBus-DoS-file-descriptor-leak"
          },
          {
            "tags": [
              "x_transferred"
            ],
            "url": "http://packetstormsecurity.com/files/172840/D-Bus-File-Descriptor-Leak-Denial-Of-Service.html"
          }
        ],
        "title": "CVE Program Container"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "n/a",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "n/a"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "An issue was discovered in dbus \u003e= 1.3.0 before 1.12.18. The DBusServer in libdbus, as used in dbus-daemon, leaks file descriptors when a message exceeds the per-message file descriptor limit. A local attacker with access to the D-Bus system bus or another system service\u0027s private AF_UNIX socket could use this to make the system service reach its file descriptor limit, denying service to subsequent D-Bus clients."
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "n/a",
              "lang": "en",
              "type": "text"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2023-06-12T00:00:00.000Z",
        "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
        "shortName": "mitre"
      },
      "references": [
        {
          "url": "https://gitlab.freedesktop.org/dbus/dbus/-/issues/294"
        },
        {
          "url": "https://gitlab.freedesktop.org/dbus/dbus/-/tags/dbus-1.13.16"
        },
        {
          "url": "http://www.openwall.com/lists/oss-security/2020/06/04/3"
        },
        {
          "url": "https://gitlab.freedesktop.org/dbus/dbus/-/tags/dbus-1.12.18"
        },
        {
          "url": "https://gitlab.freedesktop.org/dbus/dbus/-/tags/dbus-1.10.30"
        },
        {
          "name": "USN-4398-1",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://usn.ubuntu.com/4398-1/"
        },
        {
          "name": "USN-4398-2",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://usn.ubuntu.com/4398-2/"
        },
        {
          "name": "GLSA-202007-46",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://security.gentoo.org/glsa/202007-46"
        },
        {
          "url": "https://securitylab.github.com/advisories/GHSL-2020-057-DBus-DoS-file-descriptor-leak"
        },
        {
          "url": "http://packetstormsecurity.com/files/172840/D-Bus-File-Descriptor-Leak-Denial-Of-Service.html"
        }
      ]
    }
  },
  "cveMetadata": {
    "assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca",
    "assignerShortName": "mitre",
    "cveId": "CVE-2020-12049",
    "datePublished": "2020-06-08T00:00:00.000Z",
    "dateReserved": "2020-04-21T00:00:00.000Z",
    "dateUpdated": "2024-08-04T11:48:57.950Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2020-12049",
      "date": "2026-05-30",
      "epss": "0.00086",
      "percentile": "0.24877"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2020-12049\",\"sourceIdentifier\":\"cve@mitre.org\",\"published\":\"2020-06-08T17:15:09.910\",\"lastModified\":\"2024-11-21T04:59:10.813\",\"vulnStatus\":\"Modified\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"An issue was discovered in dbus \u003e= 1.3.0 before 1.12.18. The DBusServer in libdbus, as used in dbus-daemon, leaks file descriptors when a message exceeds the per-message file descriptor limit. A local attacker with access to the D-Bus system bus or another system service\u0027s private AF_UNIX socket could use this to make the system service reach its file descriptor limit, denying service to subsequent D-Bus clients.\"},{\"lang\":\"es\",\"value\":\"Se detect\u00f3 un problema en dbus versiones posteriores a 1.3.0 e incluy\u00e9ndola y anteriores a 1.12.18. El DBusServer en libdbus, como es usado en dbus-daemon, filtra los descriptores de archivo cuando un mensaje excede el l\u00edmite del descriptor de archivo por mensaje. Un atacante local con acceso al bus del sistema D-Bus o al socket AF_UNIX privado de otro servicio del sistema podr\u00eda utilizar esto para hacer que el servicio del sistema alcance su l\u00edmite del descriptor de archivos, negando el servicio a los clientes posteriores de D-Bus\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H\",\"baseScore\":5.5,\"baseSeverity\":\"MEDIUM\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":3.6}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:L/AC:L/Au:N/C:N/I:N/A:C\",\"baseScore\":4.9,\"accessVector\":\"LOCAL\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"NONE\",\"integrityImpact\":\"NONE\",\"availabilityImpact\":\"COMPLETE\"},\"baseSeverity\":\"MEDIUM\",\"exploitabilityScore\":3.9,\"impactScore\":6.9,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"CWE-404\"}]}],\"configurations\":[{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:freedesktop:dbus:*:*:*:*:*:*:*:*\",\"versionStartIncluding\":\"1.3.0\",\"versionEndExcluding\":\"1.12.18\",\"matchCriteriaId\":\"4DAA98B8-A6E1-4233-9A80-7963ED2FBC01\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:canonical:ubuntu_linux:12.04:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"1F3EFED2-F6BC-46D9-AB22-D5ED87EF4549\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:canonical:ubuntu_linux:14.04:*:*:*:esm:*:*:*\",\"matchCriteriaId\":\"815D70A8-47D3-459C-A32C-9FEACA0659D1\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:lts:*:*:*\",\"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:19.10:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"A31C8344-3E02-4EB8-8BD8-4C84B7959624\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:o:canonical:ubuntu_linux:20.04:*:*:*:lts:*:*:*\",\"matchCriteriaId\":\"902B8056-9E37-443B-8905-8AA93E2447FB\"}]}]}],\"references\":[{\"url\":\"http://packetstormsecurity.com/files/172840/D-Bus-File-Descriptor-Leak-Denial-Of-Service.html\",\"source\":\"cve@mitre.org\"},{\"url\":\"http://www.openwall.com/lists/oss-security/2020/06/04/3\",\"source\":\"cve@mitre.org\",\"tags\":[\"Mailing List\",\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://gitlab.freedesktop.org/dbus/dbus/-/issues/294\",\"source\":\"cve@mitre.org\",\"tags\":[\"Exploit\",\"Third Party Advisory\"]},{\"url\":\"https://gitlab.freedesktop.org/dbus/dbus/-/tags/dbus-1.10.30\",\"source\":\"cve@mitre.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://gitlab.freedesktop.org/dbus/dbus/-/tags/dbus-1.12.18\",\"source\":\"cve@mitre.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://gitlab.freedesktop.org/dbus/dbus/-/tags/dbus-1.13.16\",\"source\":\"cve@mitre.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://security.gentoo.org/glsa/202007-46\",\"source\":\"cve@mitre.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://securitylab.github.com/advisories/GHSL-2020-057-DBus-DoS-file-descriptor-leak\",\"source\":\"cve@mitre.org\",\"tags\":[\"Exploit\",\"Third Party Advisory\"]},{\"url\":\"https://usn.ubuntu.com/4398-1/\",\"source\":\"cve@mitre.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://usn.ubuntu.com/4398-2/\",\"source\":\"cve@mitre.org\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"http://packetstormsecurity.com/files/172840/D-Bus-File-Descriptor-Leak-Denial-Of-Service.html\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\"},{\"url\":\"http://www.openwall.com/lists/oss-security/2020/06/04/3\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Mailing List\",\"Patch\",\"Third Party Advisory\"]},{\"url\":\"https://gitlab.freedesktop.org/dbus/dbus/-/issues/294\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Exploit\",\"Third Party Advisory\"]},{\"url\":\"https://gitlab.freedesktop.org/dbus/dbus/-/tags/dbus-1.10.30\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://gitlab.freedesktop.org/dbus/dbus/-/tags/dbus-1.12.18\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://gitlab.freedesktop.org/dbus/dbus/-/tags/dbus-1.13.16\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://security.gentoo.org/glsa/202007-46\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://securitylab.github.com/advisories/GHSL-2020-057-DBus-DoS-file-descriptor-leak\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Exploit\",\"Third Party Advisory\"]},{\"url\":\"https://usn.ubuntu.com/4398-1/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]},{\"url\":\"https://usn.ubuntu.com/4398-2/\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Third Party Advisory\"]}]}}"
  }
}


Log in or create an account to share your comment.




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.