FKIE_CVE-2023-0494

Vulnerability from fkie_nvd - Published: 2023-03-27 21:15 - Updated: 2026-06-17 05:25
Severity
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
A vulnerability was found in X.Org. This issue occurs due to a dangling pointer in DeepCopyPointerClasses that can be exploited by ProcXkbSetDeviceInfo() and ProcXkbGetDeviceInfo() to read and write into freed memory. This can lead to local privilege elevation on systems where the X server runs privileged and remote code execution for ssh X forwarding sessions.
References
secalert@redhat.comhttps://bugzilla.redhat.com/show_bug.cgi?id=2165995Issue Tracking, Third Party Advisory
secalert@redhat.comhttps://gitlab.freedesktop.org/xorg/xserver/-/commit/0ba6d8c37071131a49790243cdac55392ecf71ecPatch
secalert@redhat.comhttps://lists.x.org/archives/xorg-announce/2023-February/003320.htmlMailing List, Vendor Advisory
secalert@redhat.comhttps://security.gentoo.org/glsa/202305-30
af854a3a-2127-422b-91ae-364da2661108https://bugzilla.redhat.com/show_bug.cgi?id=2165995Issue Tracking, Third Party Advisory
af854a3a-2127-422b-91ae-364da2661108https://gitlab.freedesktop.org/xorg/xserver/-/commit/0ba6d8c37071131a49790243cdac55392ecf71ecPatch
af854a3a-2127-422b-91ae-364da2661108https://lists.x.org/archives/xorg-announce/2023-February/003320.htmlMailing List, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://security.gentoo.org/glsa/202305-30
Impacted products
Vendor Product Version
x.org x_server *
fedoraproject fedora 36
fedoraproject fedora 37
redhat enterprise_linux 8.0
redhat enterprise_linux 8.1
redhat enterprise_linux 9.0
redhat enterprise_linux_aus 8.4
redhat enterprise_linux_aus 8.6
redhat enterprise_linux_desktop 7.0
redhat enterprise_linux_eus 8.4
redhat enterprise_linux_eus 8.6
redhat enterprise_linux_eus 9.0
redhat enterprise_linux_for_ibm_z_systems 7.0
redhat enterprise_linux_for_ibm_z_systems 8.0
redhat enterprise_linux_for_ibm_z_systems_eus 8.4
redhat enterprise_linux_for_ibm_z_systems_eus 8.6
redhat enterprise_linux_for_power_big_endian 7.0
redhat enterprise_linux_for_power_little_endian 7.0
redhat enterprise_linux_for_power_little_endian 8.0
redhat enterprise_linux_for_power_little_endian 9.0
redhat enterprise_linux_for_power_little_endian_eus 8.4
redhat enterprise_linux_for_power_little_endian_eus 8.6
redhat enterprise_linux_for_scientific_computing 7.0
redhat enterprise_linux_server 7.0
redhat enterprise_linux_server_aus 8.2
redhat enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions 8.1
redhat enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions 8.2
redhat enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions 8.4
redhat enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions 8.6
redhat enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions 9.0
redhat enterprise_linux_server_tus 8.2
redhat enterprise_linux_server_tus 8.4
redhat enterprise_linux_server_tus 8.6
redhat enterprise_linux_server_update_services_for_sap_solutions 8.2
redhat enterprise_linux_server_workstation 7.0
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "product": "xorg-x11-server",
          "vendor": "n/a",
          "versions": [
            {
              "status": "affected",
              "version": "xorg-server 21.1.7"
            }
          ]
        }
      ],
      "source": "secalert@redhat.com"
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:a:x.org:x_server:*:*:*:*:*:*:*:*",
              "matchCriteriaId": "8B7D5030-1EC6-4BAD-B66D-859A906E3D38",
              "versionEndExcluding": "21.1.7",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:fedoraproject:fedora:36:*:*:*:*:*:*:*",
              "matchCriteriaId": "5C675112-476C-4D7C-BCB9-A2FB2D0BC9FD",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:*",
              "matchCriteriaId": "E30D0E6F-4AE8-4284-8716-991DFA48CC5D",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    },
    {
      "nodes": [
        {
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "F4CFF558-3C47-480D-A2F0-BABF26042943",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux:8.1:*:*:*:*:*:*:*",
              "matchCriteriaId": "EF30E57A-97EA-4A44-8404-6AE4F058B44D",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "7F6FB57C-2BC7-487C-96DD-132683AEB35D",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux_aus:8.4:*:*:*:*:*:*:*",
              "matchCriteriaId": "4D5F4FA7-E5C5-4C23-BDA8-36A36972E4F4",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux_aus:8.6:*:*:*:*:*:*:*",
              "matchCriteriaId": "5CA4F12A-5BC5-4D75-8F20-80D8BB2C5BF2",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux_desktop:7.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "33C068A4-3780-4EAB-A937-6082DF847564",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux_eus:8.4:*:*:*:*:*:*:*",
              "matchCriteriaId": "0E3F09B5-569F-4C58-9FCA-3C0953D107B5",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux_eus:8.6:*:*:*:*:*:*:*",
              "matchCriteriaId": "6C3741B8-851F-475D-B428-523F4F722350",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux_eus:9.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "4DDA3E5A-8754-4C48-9A27-E2415F8A6000",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:7.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "566507B6-AC95-47F7-A3FB-C6F414E45F51",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems:8.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "87C21FE1-EA5C-498F-9C6C-D05F91A88217",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.4:*:*:*:*:*:*:*",
              "matchCriteriaId": "8C9BD9AE-46FC-4609-8D99-A3CFE91D58D1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux_for_ibm_z_systems_eus:8.6:*:*:*:*:*:*:*",
              "matchCriteriaId": "9EF5C4AC-CA69-41E3-AD93-7AC21931374A",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux_for_power_big_endian:7.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "1CDCFF34-6F1D-45A1-BE37-6A0E17B04801",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:7.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "B4A684C7-88FD-43C4-9BDB-AE337FCBD0AB",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:8.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "47811209-5CE5-4375-8391-B0A7F6A0E420",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian:9.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "35EEDB95-DCD1-4FED-9BBB-877B2062410C",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.4:*:*:*:*:*:*:*",
              "matchCriteriaId": "983533DD-3970-4A37-9A9C-582BD48AA1E5",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux_for_power_little_endian_eus:8.6:*:*:*:*:*:*:*",
              "matchCriteriaId": "729C515E-1DD3-466D-A50B-AFE058FFC94A",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux_for_scientific_computing:7.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "37CE1DC7-72C5-483C-8921-0B462C8284D1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux_server:7.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "51EF4996-72F4-4FA4-814F-F5991E7A8318",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux_server_aus:8.2:*:*:*:*:*:*:*",
              "matchCriteriaId": "6897676D-53F9-45B3-B27F-7FF9A4C58D33",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.1:*:*:*:*:*:*:*",
              "matchCriteriaId": "4DF2B9A2-8CA6-4EDF-9975-07265E363ED2",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.2:*:*:*:*:*:*:*",
              "matchCriteriaId": "7DA6A5AF-2EBE-4ED9-B312-DCD9D150D031",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.4:*:*:*:*:*:*:*",
              "matchCriteriaId": "22D095ED-9247-4133-A133-73B7668565E4",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:8.6:*:*:*:*:*:*:*",
              "matchCriteriaId": "871A5C26-DB7B-4870-A5B2-5DD24C90B4A7",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux_server_for_power_little_endian_update_services_for_sap_solutions:9.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "492DF629-16B8-4882-822D-A6897B03DD30",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux_server_tus:8.2:*:*:*:*:*:*:*",
              "matchCriteriaId": "B09ACF2D-D83F-4A86-8185-9569605D8EE1",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux_server_tus:8.4:*:*:*:*:*:*:*",
              "matchCriteriaId": "AC10D919-57FD-4725-B8D2-39ECB476902F",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux_server_tus:8.6:*:*:*:*:*:*:*",
              "matchCriteriaId": "1272DF03-7674-4BD4-8E64-94004B195448",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux_server_update_services_for_sap_solutions:8.2:*:*:*:*:*:*:*",
              "matchCriteriaId": "3921C1CF-A16D-4727-99AD-03EFFA7C91CA",
              "vulnerable": true
            },
            {
              "criteria": "cpe:2.3:o:redhat:enterprise_linux_server_workstation:7.0:*:*:*:*:*:*:*",
              "matchCriteriaId": "DC7808D1-B267-4361-8187-5AB70B64179A",
              "vulnerable": true
            }
          ],
          "negate": false,
          "operator": "OR"
        }
      ]
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "A vulnerability was found in X.Org. This issue occurs due to a dangling pointer in DeepCopyPointerClasses that can be exploited by ProcXkbSetDeviceInfo() and ProcXkbGetDeviceInfo() to read and write into freed memory. This can lead to local privilege elevation on systems where the X server runs privileged and remote code execution for ssh X forwarding sessions."
    }
  ],
  "id": "CVE-2023-0494",
  "lastModified": "2026-06-17T05:25:40.823",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Primary"
      },
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2023-0494",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2025-02-24T17:41:52.537361Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2023-03-27T21:15:10.193",
  "references": [
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Issue Tracking",
        "Third Party Advisory"
      ],
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2165995"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Patch"
      ],
      "url": "https://gitlab.freedesktop.org/xorg/xserver/-/commit/0ba6d8c37071131a49790243cdac55392ecf71ec"
    },
    {
      "source": "secalert@redhat.com",
      "tags": [
        "Mailing List",
        "Vendor Advisory"
      ],
      "url": "https://lists.x.org/archives/xorg-announce/2023-February/003320.html"
    },
    {
      "source": "secalert@redhat.com",
      "url": "https://security.gentoo.org/glsa/202305-30"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Issue Tracking",
        "Third Party Advisory"
      ],
      "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2165995"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Patch"
      ],
      "url": "https://gitlab.freedesktop.org/xorg/xserver/-/commit/0ba6d8c37071131a49790243cdac55392ecf71ec"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "tags": [
        "Mailing List",
        "Vendor Advisory"
      ],
      "url": "https://lists.x.org/archives/xorg-announce/2023-February/003320.html"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://security.gentoo.org/glsa/202305-30"
    }
  ],
  "sourceIdentifier": "secalert@redhat.com",
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "secalert@redhat.com",
      "type": "Secondary"
    },
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-416"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





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.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.