USN-5244-1 (UBUNTU-CVE-2020-35512)

Vulnerability from osv_ubuntu – Published: 2022-01-20 19:51 – Updated: 2026-06-25 10:46 – Source website
VLAI
Summary
dbus vulnerability
Details

Daniel Onaca discovered that DBus contained a use-after-free vulnerability, caused by the incorrect handling of usernames sharing the same UID. An attacker could possibly use this issue to cause DBus to crash, resulting in a denial of service.

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2020-35512",
              "severity": [
                {
                  "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "low",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:Pro:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro",
        "binaries": [
          {
            "binary_name": "dbus",
            "binary_version": "1.10.6-1ubuntu3.6+esm1"
          },
          {
            "binary_name": "dbus-tests",
            "binary_version": "1.10.6-1ubuntu3.6+esm1"
          },
          {
            "binary_name": "dbus-user-session",
            "binary_version": "1.10.6-1ubuntu3.6+esm1"
          },
          {
            "binary_name": "dbus-x11",
            "binary_version": "1.10.6-1ubuntu3.6+esm1"
          },
          {
            "binary_name": "libdbus-1-3",
            "binary_version": "1.10.6-1ubuntu3.6+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "dbus",
        "purl": "pkg:deb/ubuntu/dbus@1.10.6-1ubuntu3.6+esm1?arch=source\u0026distro=esm-infra/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.10.6-1ubuntu3.6+esm1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.10.0-1ubuntu1",
        "1.10.4-1ubuntu2",
        "1.10.6-1ubuntu1",
        "1.10.6-1ubuntu2",
        "1.10.6-1ubuntu3",
        "1.10.6-1ubuntu3.1",
        "1.10.6-1ubuntu3.3",
        "1.10.6-1ubuntu3.4",
        "1.10.6-1ubuntu3.5",
        "1.10.6-1ubuntu3.6"
      ]
    }
  ],
  "aliases": [],
  "details": "Daniel Onaca discovered that DBus contained a use-after-free vulnerability,\ncaused by the incorrect handling of usernames sharing the same UID. An\nattacker could possibly use this issue to cause DBus to crash, resulting\nin a denial of service.\n",
  "id": "USN-5244-1",
  "modified": "2026-06-25T10:46:03Z",
  "published": "2022-01-20T19:51:21Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5244-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2020-35512"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "dbus vulnerability",
  "upstream": [
    "UBUNTU-CVE-2020-35512"
  ]
}



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