Vulnerability-Lookup

OESA-2021-1101 (CVE-2020-35512)

Vulnerability from osv_openeuler – Published: 2021-04-07 11:04 – Updated: 2026-08-06 11:04 – Source website

Summary

dbus security update

Details

D-Bus is a message bus system, a simple way for applications to talk to one another. In addition to interprocess communication, D-Bus helps coordinate process lifecycle; it makes it simple and reliable to code a "single instance" application or daemon, and to launch applications and daemons on demand when their services are needed.

Security Fix(es):

A use-after-free flaw was found in D-Bus Development branch <= 1.13.16, dbus-1.12.x stable branch <= 1.12.18, and dbus-1.10.x and older branches <= 1.10.30 when a system has multiple usernames sharing the same UID. When a set of policy rules references these usernames, D-Bus may free some memory in the heap, which is still used by data structures necessary for the other usernames sharing the UID, possibly leading to a crash or other undefined behaviors(CVE-2020-35512)

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-2020-35512	ADVISORY

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "aarch64": [
          "dbus-tools-1.12.16-16.oe1.aarch64.rpm",
          "dbus-1.12.16-16.oe1.aarch64.rpm",
          "dbus-devel-1.12.16-16.oe1.aarch64.rpm",
          "dbus-daemon-1.12.16-16.oe1.aarch64.rpm",
          "dbus-libs-1.12.16-16.oe1.aarch64.rpm",
          "dbus-debuginfo-1.12.16-16.oe1.aarch64.rpm",
          "dbus-debugsource-1.12.16-16.oe1.aarch64.rpm",
          "dbus-x11-1.12.16-16.oe1.aarch64.rpm",
          "dbus-daemon-1.12.16-17.oe1.aarch64.rpm",
          "dbus-debugsource-1.12.16-17.oe1.aarch64.rpm",
          "dbus-devel-1.12.16-17.oe1.aarch64.rpm",
          "dbus-libs-1.12.16-17.oe1.aarch64.rpm",
          "dbus-x11-1.12.16-17.oe1.aarch64.rpm",
          "dbus-tools-1.12.16-17.oe1.aarch64.rpm",
          "dbus-1.12.16-17.oe1.aarch64.rpm",
          "dbus-debuginfo-1.12.16-17.oe1.aarch64.rpm"
        ],
        "noarch": [
          "dbus-help-1.12.16-16.oe1.noarch.rpm",
          "dbus-common-1.12.16-16.oe1.noarch.rpm",
          "dbus-common-1.12.16-17.oe1.noarch.rpm",
          "dbus-help-1.12.16-17.oe1.noarch.rpm"
        ],
        "src": [
          "dbus-1.12.16-16.oe1.src.rpm",
          "dbus-1.12.16-17.oe1.src.rpm"
        ],
        "x86_64": [
          "dbus-debuginfo-1.12.16-16.oe1.x86_64.rpm",
          "dbus-devel-1.12.16-16.oe1.x86_64.rpm",
          "dbus-x11-1.12.16-16.oe1.x86_64.rpm",
          "dbus-1.12.16-16.oe1.x86_64.rpm",
          "dbus-debugsource-1.12.16-16.oe1.x86_64.rpm",
          "dbus-tools-1.12.16-16.oe1.x86_64.rpm",
          "dbus-libs-1.12.16-16.oe1.x86_64.rpm",
          "dbus-daemon-1.12.16-16.oe1.x86_64.rpm",
          "dbus-daemon-1.12.16-17.oe1.x86_64.rpm",
          "dbus-1.12.16-17.oe1.x86_64.rpm",
          "dbus-tools-1.12.16-17.oe1.x86_64.rpm",
          "dbus-devel-1.12.16-17.oe1.x86_64.rpm",
          "dbus-x11-1.12.16-17.oe1.x86_64.rpm",
          "dbus-debuginfo-1.12.16-17.oe1.x86_64.rpm",
          "dbus-libs-1.12.16-17.oe1.x86_64.rpm",
          "dbus-debugsource-1.12.16-17.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS",
        "name": "dbus",
        "purl": "pkg:rpm/openEuler/dbus\u0026distro=openEuler-20.03-LTS"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.12.16-17.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "aarch64": [
          "dbus-daemon-1.12.16-17.oe1.aarch64.rpm",
          "dbus-debugsource-1.12.16-17.oe1.aarch64.rpm",
          "dbus-devel-1.12.16-17.oe1.aarch64.rpm",
          "dbus-libs-1.12.16-17.oe1.aarch64.rpm",
          "dbus-x11-1.12.16-17.oe1.aarch64.rpm",
          "dbus-tools-1.12.16-17.oe1.aarch64.rpm",
          "dbus-1.12.16-17.oe1.aarch64.rpm",
          "dbus-debuginfo-1.12.16-17.oe1.aarch64.rpm"
        ],
        "noarch": [
          "dbus-common-1.12.16-17.oe1.noarch.rpm",
          "dbus-help-1.12.16-17.oe1.noarch.rpm"
        ],
        "src": [
          "dbus-1.12.16-17.oe1.src.rpm"
        ],
        "x86_64": [
          "dbus-daemon-1.12.16-17.oe1.x86_64.rpm",
          "dbus-1.12.16-17.oe1.x86_64.rpm",
          "dbus-tools-1.12.16-17.oe1.x86_64.rpm",
          "dbus-devel-1.12.16-17.oe1.x86_64.rpm",
          "dbus-x11-1.12.16-17.oe1.x86_64.rpm",
          "dbus-debuginfo-1.12.16-17.oe1.x86_64.rpm",
          "dbus-libs-1.12.16-17.oe1.x86_64.rpm",
          "dbus-debugsource-1.12.16-17.oe1.x86_64.rpm"
        ]
      },
      "package": {
        "ecosystem": "openEuler:20.03-LTS-SP1",
        "name": "dbus",
        "purl": "pkg:rpm/openEuler/dbus\u0026distro=openEuler-20.03-LTS-SP1"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.12.16-17.oe1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "severity": "High"
  },
  "details": "D-Bus is a message bus system, a simple way for applications to talk to one another. In addition to interprocess communication, D-Bus helps coordinate process lifecycle; it makes it simple and reliable to code a \u0026quot;single instance\u0026quot; application or daemon, and to launch applications and daemons on demand when their services are needed.\r\n\r\nSecurity Fix(es):\r\n\r\nA use-after-free flaw was found in D-Bus Development branch \u0026lt;= 1.13.16, dbus-1.12.x stable branch \u0026lt;= 1.12.18, and dbus-1.10.x and older branches \u0026lt;= 1.10.30 when a system has multiple usernames sharing the same UID. When a set of policy rules references these usernames, D-Bus may free some memory in the heap, which is still used by data structures necessary for the other usernames sharing the UID, possibly leading to a crash or other undefined behaviors(CVE-2020-35512)",
  "id": "OESA-2021-1101",
  "modified": "2026-08-06T11:04:20Z",
  "published": "2021-04-07T11:04:20Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://openeuler.org/en/security/safety-bulletin/detail.html?id=openEuler-SA-2021-1101"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2020-35512"
    }
  ],
  "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": "dbus security update",
  "upstream": [
    "CVE-2020-35512"
  ]
}

CVE-2020-35512 (GCVE-0-2020-35512)

Vulnerability from cvelistv5 – Published: 2021-02-15 16:08 – Updated: 2024-11-19 15:32

Summary

Severity

No CVSS data available.

SSVC

Exploitation: none Automatable: no Technical Impact: total

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2024-11-19 15:31 UTC

CWE

Use-After-Free

Assigner

redhat redhat root

References

4 references

URL	Tags
https://bugs.gentoo.org/755392	x_refsource_MISC
https://gitlab.freedesktop.org/dbus/dbus/-/issues…	x_refsource_MISC
https://bugzilla.redhat.com/show_bug.cgi?id=1909101	x_refsource_MISC
https://security-tracker.debian.org/tracker/CVE-2…	x_refsource_MISC

Impacted products

3 products

Vendor	Product	Version
n/a	D-Bus Development branch	Affected: <= 1.13.16 (Fixed: >= 1.13.18)
n/a	dbus-1.12.x stable branch	Affected: <= 1.12.18 (Fixed: >= 1.12.20)
n/a	dbus-1.10.x and older branches (EOL)	Affected: <= 1.10.30 (Fixed: 1.10.32)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-04T17:02:08.036Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://bugs.gentoo.org/755392"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://gitlab.freedesktop.org/dbus/dbus/-/issues/305#note_829128"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1909101"
          },
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://security-tracker.debian.org/tracker/CVE-2020-35512"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2020-35512",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-11-19T15:31:25.634957Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2024-11-19T15:32:44.371Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "product": "D-Bus Development branch",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "\u003c= 1.13.16 (Fixed: \u003e= 1.13.18)"
            }
          ]
        },
        {
          "product": "dbus-1.12.x stable branch",
          "vendor": "n/a",
          "versions": [
            {
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              "version": "\u003c= 1.12.18 (Fixed: \u003e= 1.12.20)"
            }
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        },
        {
          "product": "dbus-1.10.x and older branches (EOL)",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
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        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A use-after-free flaw was found in D-Bus Development branch \u003c= 1.13.16, dbus-1.12.x stable branch \u003c= 1.12.18, and dbus-1.10.x and older branches \u003c= 1.10.30 when a system has multiple usernames sharing the same UID. When a set of policy rules references these usernames, D-Bus may free some memory in the heap, which is still used by data structures necessary for the other usernames sharing the UID, possibly leading to a crash or other undefined behaviors"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "Use-After-Free",
              "lang": "en",
              "type": "text"
            }
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      "providerMetadata": {
        "dateUpdated": "2021-03-08T20:46:11.000Z",
        "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
        "shortName": "redhat"
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          "tags": [
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          "url": "https://bugs.gentoo.org/755392"
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          "url": "https://gitlab.freedesktop.org/dbus/dbus/-/issues/305#note_829128"
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          "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1909101"
        },
        {
          "tags": [
            "x_refsource_MISC"
          ],
          "url": "https://security-tracker.debian.org/tracker/CVE-2020-35512"
        }
      ],
      "x_legacyV4Record": {
        "CVE_data_meta": {
          "ASSIGNER": "secalert@redhat.com",
          "ID": "CVE-2020-35512",
          "STATE": "PUBLIC"
        },
        "affects": {
          "vendor": {
            "vendor_data": [
              {
                "product": {
                  "product_data": [
                    {
                      "product_name": "D-Bus Development branch",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "\u003c= 1.13.16 (Fixed: \u003e= 1.13.18)"
                          }
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                      }
                    },
                    {
                      "product_name": "dbus-1.12.x stable branch",
                      "version": {
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                            "version_value": "\u003c= 1.12.18 (Fixed: \u003e= 1.12.20)"
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                    },
                    {
                      "product_name": "dbus-1.10.x and older branches (EOL)",
                      "version": {
                        "version_data": [
                          {
                            "version_value": "\u003c= 1.10.30 (Fixed: 1.10.32)"
                          }
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                "vendor_name": "n/a"
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            }
          ]
        },
        "problemtype": {
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            {
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                {
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                  "value": "Use-After-Free"
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          ]
        },
        "references": {
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              "refsource": "MISC",
              "url": "https://bugs.gentoo.org/755392"
            },
            {
              "name": "https://gitlab.freedesktop.org/dbus/dbus/-/issues/305#note_829128",
              "refsource": "MISC",
              "url": "https://gitlab.freedesktop.org/dbus/dbus/-/issues/305#note_829128"
            },
            {
              "name": "https://bugzilla.redhat.com/show_bug.cgi?id=1909101",
              "refsource": "MISC",
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            },
            {
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              "refsource": "MISC",
              "url": "https://security-tracker.debian.org/tracker/CVE-2020-35512"
            }
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  "cveMetadata": {
    "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749",
    "assignerShortName": "redhat",
    "cveId": "CVE-2020-35512",
    "datePublished": "2021-02-15T16:08:39.000Z",
    "dateReserved": "2020-12-17T00:00:00.000Z",
    "dateUpdated": "2024-11-19T15:32:44.371Z",
    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
  "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.

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.

Action not permitted

OESA-2021-1101 (CVE-2020-35512)

CVE-2020-35512 (GCVE-0-2020-35512)

Tags

Sightings

Nomenclature

Related by attack behaviour