CVE-2023-6816 Xorg-x11-server: heap buffer overflow in devicefocusevent and procxiquerypointer

2024-01-1804:31:07

CWE-787

redhat

www.cve.org

cve-2023-6816 xorg-x11-server

heap buffer overflow

devicefocusevent

xiquerypointer

logical button

x.org server

heap overflow

9.8 High

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

9.8 High

AI Score

Confidence

High

0.002 Low

EPSS

Percentile

53.7%

JSON

A flaw was found in X.Org server. Both DeviceFocusEvent and the XIQueryPointer reply contain a bit for each logical button currently down. Buttons can be arbitrarily mapped to any value up to 255, but the X.Org Server was only allocating space for the device’s particular number of buttons, leading to a heap overflow if a bigger value was used.

CNA Affected

[
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 7",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "xorg-x11-server",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "0:1.20.4-27.el7_9",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:7::computenode",
      "cpe:/o:redhat:enterprise_linux:7::server",
      "cpe:/o:redhat:enterprise_linux:7::workstation",
      "cpe:/o:redhat:enterprise_linux:7::client"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 7",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "tigervnc",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "0:1.8.0-31.el7_9",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:7::computenode",
      "cpe:/o:redhat:enterprise_linux:7::server",
      "cpe:/o:redhat:enterprise_linux:7::workstation",
      "cpe:/o:redhat:enterprise_linux:7::client"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8",
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      }
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    "cpes": [
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    ]
  },
  {
    "vendor": "Red Hat",
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    "packageName": "xorg-x11-server-Xwayland",
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    "versions": [
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    "cpes": [
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    ]
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  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8.2 Advanced Update Support",
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    "packageName": "tigervnc",
    "defaultStatus": "affected",
    "versions": [
      {
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        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/a:redhat:rhel_e4s:8.2::appstream",
      "cpe:/a:redhat:rhel_aus:8.2::appstream",
      "cpe:/a:redhat:rhel_tus:8.2::appstream"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8.2 Telecommunications Update Service",
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      "cpe:/a:redhat:rhel_aus:8.2::appstream",
      "cpe:/a:redhat:rhel_tus:8.2::appstream"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/a:redhat:rhel_e4s:8.2::appstream",
      "cpe:/a:redhat:rhel_aus:8.2::appstream",
      "cpe:/a:redhat:rhel_tus:8.2::appstream"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "tigervnc",
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    "versions": [
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        "version": "0:1.11.0-8.el8_4.8",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/a:redhat:rhel_e4s:8.4::appstream",
      "cpe:/a:redhat:rhel_tus:8.4::appstream",
      "cpe:/a:redhat:rhel_aus:8.4::appstream"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8.4 Telecommunications Update Service",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "tigervnc",
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        "lessThan": "*",
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    ],
    "cpes": [
      "cpe:/a:redhat:rhel_e4s:8.4::appstream",
      "cpe:/a:redhat:rhel_tus:8.4::appstream",
      "cpe:/a:redhat:rhel_aus:8.4::appstream"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "tigervnc",
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      "cpe:/a:redhat:rhel_aus:8.4::appstream"
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    ],
    "cpes": [
      "cpe:/a:redhat:rhel_eus:8.8::appstream"
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  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 9",
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    "versions": [
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        "version": "0:1.13.1-3.el9_3.6",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/a:redhat:enterprise_linux:9::appstream"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 9",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "xorg-x11-server",
    "defaultStatus": "affected",
    "versions": [
      {
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        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
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      "cpe:/a:redhat:enterprise_linux:9::crb"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 9",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "xorg-x11-server-Xwayland",
    "defaultStatus": "affected",
    "versions": [
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        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
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    ]
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    "product": "Red Hat Enterprise Linux 9.0 Extended Update Support",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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        "versionType": "rpm",
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        "versionType": "rpm",
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  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 6",
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  {
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    "product": "Red Hat Enterprise Linux 8",
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]