USN-3255-1 (UBUNTU-CVE-2017-7358)

Vulnerability from osv_ubuntu – Published: 2017-04-04 22:06 – Updated: 2026-04-22 07:36 – Source website
VLAI
Summary
lightdm vulnerability
Details

It was discovered that LightDM incorrectly handled home directory creation for guest users. A local attacker could use this issue to gain ownership of arbitrary directory paths and possibly gain administrative privileges.

References
To clipboard 

{
  "affected": [
    {
      "database_specific": {
        "cves_map": {
          "cves": [
            {
              "id": "CVE-2017-7358",
              "severity": [
                {
                  "score": "CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H",
                  "type": "CVSS_V3"
                },
                {
                  "score": "high",
                  "type": "Ubuntu"
                }
              ]
            }
          ],
          "ecosystem": "Ubuntu:16.04:LTS"
        }
      },
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "gir1.2-lightdm-1",
            "binary_version": "1.18.3-0ubuntu1.1"
          },
          {
            "binary_name": "liblightdm-gobject-1-0",
            "binary_version": "1.18.3-0ubuntu1.1"
          },
          {
            "binary_name": "liblightdm-qt-3-0",
            "binary_version": "1.18.3-0ubuntu1.1"
          },
          {
            "binary_name": "liblightdm-qt5-3-0",
            "binary_version": "1.18.3-0ubuntu1.1"
          },
          {
            "binary_name": "lightdm",
            "binary_version": "1.18.3-0ubuntu1.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "lightdm",
        "purl": "pkg:deb/ubuntu/lightdm@1.18.3-0ubuntu1.1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "1.18.3-0ubuntu1.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.16.4-0ubuntu1",
        "1.17.0-0ubuntu1",
        "1.17.1-0ubuntu1",
        "1.17.1-0ubuntu2",
        "1.17.2-0ubuntu1",
        "1.17.3-0ubuntu1",
        "1.17.4-0ubuntu1",
        "1.17.5-0ubuntu2",
        "1.17.6-0ubuntu1",
        "1.18.0-0ubuntu1",
        "1.18.0-0ubuntu2",
        "1.18.1-0ubuntu1",
        "1.18.2-0ubuntu1",
        "1.18.2-0ubuntu2",
        "1.18.3-0ubuntu1"
      ]
    }
  ],
  "aliases": [],
  "details": "It was discovered that LightDM incorrectly handled home directory creation for\nguest users. A local attacker could use this issue to gain ownership of\narbitrary directory paths and possibly gain administrative privileges.\n",
  "id": "USN-3255-1",
  "modified": "2026-04-22T07:36:34Z",
  "published": "2017-04-04T22:06:15Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-3255-1"
    },
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2017-7358"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "summary": "lightdm vulnerability",
  "upstream": [
    "UBUNTU-CVE-2017-7358"
  ]
}



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