usn-5149-1
Vulnerability from osv_ubuntu
Published
2021-11-16 17:56
Modified
2026-04-22 07:37
Summary
accountsservice vulnerability
Details

Kevin Backhouse discovered that AccountsService incorrectly handled memory when performing certain language setting operations. A local attacker could use this issue to escalate privileges.

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2021-3939",
              "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": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:20.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "accountsservice",
            "binary_version": "0.6.55-0ubuntu12~20.04.5"
          },
          {
            "binary_name": "gir1.2-accountsservice-1.0",
            "binary_version": "0.6.55-0ubuntu12~20.04.5"
          },
          {
            "binary_name": "libaccountsservice0",
            "binary_version": "0.6.55-0ubuntu12~20.04.5"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "accountsservice",
        "purl": "pkg:deb/ubuntu/accountsservice@0.6.55-0ubuntu12~20.04.5?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "0.6.55-0ubuntu12~20.04.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "0.6.55-0ubuntu10",
        "0.6.55-0ubuntu11",
        "0.6.55-0ubuntu12~20.04.1",
        "0.6.55-0ubuntu12~20.04.2",
        "0.6.55-0ubuntu12~20.04.4"
      ]
    }
  ],
  "aliases": [],
  "details": "Kevin Backhouse discovered that AccountsService incorrectly handled memory\nwhen performing certain language setting operations. A local attacker could\nuse this issue to escalate privileges.\n",
  "id": "USN-5149-1",
  "modified": "2026-04-22T07:37:00Z",
  "published": "2021-11-16T17:56:06Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-5149-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2021-3939"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "accountsservice vulnerability",
  "upstream": [
    "UBUNTU-CVE-2021-3939"
  ]
}



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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.