ubuntu-cve-2018-20681
Vulnerability from osv_ubuntu
Published
2019-01-09 23:29
Modified
2025-10-24 04:47
Summary
Details

mate-screensaver before 1.20.2 in MATE Desktop Environment allows physically proximate attackers to view screen content and possibly control applications. By unplugging and re-plugging or power-cycling external output devices (such as additionally attached graphical outputs via HDMI, VGA, DVI, etc.) the content of a screensaver-locked session can be revealed. In some scenarios, the attacker can execute applications, such as by clicking with a mouse.

Severity
6.1 (Medium)
CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
N/A (UNKNOWN)
medium
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "mate-screensaver",
            "binary_version": "1.12.0-1"
          },
          {
            "binary_name": "mate-screensaver-common",
            "binary_version": "1.12.0-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "mate-screensaver",
        "purl": "pkg:deb/ubuntu/mate-screensaver@1.12.0-1?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.10.2-1",
        "1.12.0-1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "mate-screensaver",
            "binary_version": "1.20.0-1"
          },
          {
            "binary_name": "mate-screensaver-common",
            "binary_version": "1.20.0-1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "mate-screensaver",
        "purl": "pkg:deb/ubuntu/mate-screensaver@1.20.0-1?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "1.18.1-2ubuntu0",
        "1.18.2-1",
        "1.19.1-0ubuntu1",
        "1.19.1-0ubuntu2",
        "1.20.0-0ubuntu1",
        "1.20.0-1"
      ]
    }
  ],
  "aliases": [],
  "details": "mate-screensaver before 1.20.2 in MATE Desktop Environment allows physically proximate attackers to view screen content and possibly control applications. By unplugging and re-plugging or power-cycling external output devices (such as additionally attached graphical outputs via HDMI, VGA, DVI, etc.) the content of a screensaver-locked session can be revealed. In some scenarios, the attacker can execute applications, such as by clicking with a mouse.",
  "id": "UBUNTU-CVE-2018-20681",
  "modified": "2025-10-24T04:47:18Z",
  "published": "2019-01-09T23:29:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2018-20681"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/mate-desktop/mate-screensaver/issues/152"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/mate-desktop/mate-screensaver/issues/155"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/mate-desktop/mate-screensaver/issues/170"
    },
    {
      "type": "REPORT",
      "url": "https://github.com/mate-desktop/mate-screensaver/pull/167"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2018-20681"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.0/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2018-20681"
  ]
}



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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.