UBUNTU-CVE-2025-46805 (CVE-2025-46805)

Vulnerability from osv_ubuntu – Published: 2025-05-08 00:00 – Updated: 2026-01-27 11:14 – Source website
VLAI
Details

Screen version 5.0.0 and older version 4 releases have a TOCTOU race potentially allowing to send SIGHUP, SIGCONT to privileged processes when installed setuid-root.

Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.7 (Medium)
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
N/A (UNKNOWN)
low
References
To clipboard 

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "screen",
            "binary_version": "4.1.0~20120320gitdb59704-9ubuntu0.1~esm3"
          }
        ],
        "priority_reason": "Ubuntu does not install screen setuid-root"
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:14.04:LTS",
        "name": "screen",
        "purl": "pkg:deb/ubuntu/screen@4.1.0~20120320gitdb59704-9ubuntu0.1~esm3?arch=source\u0026distro=esm-infra-legacy/trusty"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.0.3-14ubuntu10",
        "4.1.0~20120320gitdb59704-9",
        "4.1.0~20120320gitdb59704-9ubuntu0.1~esm1",
        "4.1.0~20120320gitdb59704-9ubuntu0.1~esm2",
        "4.1.0~20120320gitdb59704-9ubuntu0.1~esm3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "screen",
            "binary_version": "4.3.1-2ubuntu0.1+esm1"
          }
        ],
        "priority_reason": "Ubuntu does not install screen setuid-root"
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:16.04:LTS",
        "name": "screen",
        "purl": "pkg:deb/ubuntu/screen@4.3.1-2ubuntu0.1+esm1?arch=source\u0026distro=esm-infra/xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.3.1-2",
        "4.3.1-2build1",
        "4.3.1-2ubuntu0.1",
        "4.3.1-2ubuntu0.1+esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "screen",
            "binary_version": "4.6.2-1ubuntu1.1+esm1"
          }
        ],
        "priority_reason": "Ubuntu does not install screen setuid-root"
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:18.04:LTS",
        "name": "screen",
        "purl": "pkg:deb/ubuntu/screen@4.6.2-1ubuntu1.1+esm1?arch=source\u0026distro=esm-infra/bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.6.1-1",
        "4.6.2-1",
        "4.6.2-1ubuntu1",
        "4.6.2-1ubuntu1.1",
        "4.6.2-1ubuntu1.1+esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "screen",
            "binary_version": "4.8.0-1ubuntu0.1"
          }
        ],
        "priority_reason": "Ubuntu does not install screen setuid-root"
      },
      "package": {
        "ecosystem": "Ubuntu:20.04:LTS",
        "name": "screen",
        "purl": "pkg:deb/ubuntu/screen@4.8.0-1ubuntu0.1?arch=source\u0026distro=focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.6.2-3build1",
        "4.7.0-1",
        "4.8.0-1",
        "4.8.0-1ubuntu0.1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "screen",
            "binary_version": "4.9.0-1ubuntu0.1"
          }
        ],
        "priority_reason": "Ubuntu does not install screen setuid-root"
      },
      "package": {
        "ecosystem": "Ubuntu:22.04:LTS",
        "name": "screen",
        "purl": "pkg:deb/ubuntu/screen@4.9.0-1ubuntu0.1?arch=source\u0026distro=jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.9.0-1ubuntu0.1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.8.0-6",
        "4.8.0-6build1",
        "4.8.0-7",
        "4.9.0-1"
      ]
    },
    {
      "ecosystem_specific": {
        "availability": "No subscription required",
        "binaries": [
          {
            "binary_name": "screen",
            "binary_version": "4.9.1-1ubuntu1"
          }
        ],
        "priority_reason": "Ubuntu does not install screen setuid-root"
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "screen",
        "purl": "pkg:deb/ubuntu/screen@4.9.1-1ubuntu1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "4.9.1-1ubuntu1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "4.9.0-4",
        "4.9.1-1",
        "4.9.1-1build1"
      ]
    }
  ],
  "aliases": [],
  "details": "Screen version 5.0.0 and older version 4 releases have  a TOCTOU race potentially allowing to send SIGHUP, SIGCONT to privileged processes when installed setuid-root.",
  "id": "UBUNTU-CVE-2025-46805",
  "modified": "2026-01-27T11:14:02Z",
  "published": "2025-05-08T00:00:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2025-46805"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2025-46805"
    },
    {
      "type": "REPORT",
      "url": "https://www.openwall.com/lists/oss-security/2025/05/12/1"
    },
    {
      "type": "ADVISORY",
      "url": "https://ubuntu.com/security/notices/USN-7978-1"
    }
  ],
  "related": [
    "USN-7978-1"
  ],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N",
      "type": "CVSS_V4"
    },
    {
      "score": "low",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2025-46805"
  ]
}



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