CVE-2023-6377 Xorg-x11-server: out-of-bounds memory reads/writes in xkb button actions

2023-12-1306:27:40

CWE-125

redhat

www.cve.org

xorg-x11-server

out-of-bounds memory

local privilege escalation

remote code execution

x11 forwarding

touchpad

mouse

7.8 High

CVSS3

Attack Vector

LOCAL

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

NONE

Scope

UNCHANGED

Confidentiality Impact

HIGH

Integrity Impact

HIGH

Availability Impact

HIGH

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

8.4 High

AI Score

Confidence

High

0.273 Low

EPSS

Percentile

96.8%

JSON

A flaw was found in xorg-server. Querying or changing XKB button actions such as moving from a touchpad to a mouse can result in out-of-bounds memory reads and writes. This may allow local privilege escalation or possible remote code execution in cases where X11 forwarding is involved.

CNA Affected

[
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 7",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "tigervnc",
    "defaultStatus": "affected",
    "versions": [
      {
        "version": "0:1.8.0-28.el7_9",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:7::workstation",
      "cpe:/o:redhat:enterprise_linux:7::client",
      "cpe:/o:redhat:enterprise_linux:7::computenode",
      "cpe:/o:redhat:enterprise_linux:7::server"
    ]
  },
  {
    "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": "0:1.20.4-25.el7_9",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/o:redhat:enterprise_linux:7::workstation",
      "cpe:/o:redhat:enterprise_linux:7::client",
      "cpe:/o:redhat:enterprise_linux:7::computenode",
      "cpe:/o:redhat:enterprise_linux:7::server"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8",
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    "defaultStatus": "affected",
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        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/a:redhat:enterprise_linux:8::appstream"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "xorg-x11-server",
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        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
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    "cpes": [
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    ]
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  {
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    "packageName": "xorg-x11-server-Xwayland",
    "defaultStatus": "affected",
    "versions": [
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        "version": "0:21.1.3-15.el8",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
    ],
    "cpes": [
      "cpe:/a:redhat:enterprise_linux:8::appstream"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8.2 Advanced Update Support",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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    "versions": [
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        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
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    "cpes": [
      "cpe:/a:redhat:rhel_tus:8.2::appstream",
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      "cpe:/a:redhat:rhel_e4s:8.2::appstream"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8.2 Telecommunications Update Service",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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    "versions": [
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    ],
    "cpes": [
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      "cpe:/a:redhat:rhel_aus:8.2::appstream",
      "cpe:/a:redhat:rhel_e4s:8.2::appstream"
    ]
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  {
    "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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    "cpes": [
      "cpe:/a:redhat:rhel_tus:8.2::appstream",
      "cpe:/a:redhat:rhel_aus:8.2::appstream",
      "cpe:/a:redhat:rhel_e4s: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_4.5",
        "lessThan": "*",
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      "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",
    "defaultStatus": "affected",
    "versions": [
      {
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        "lessThan": "*",
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      "cpe:/a:redhat:rhel_tus:8.4::appstream",
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  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 8.4 Update Services for SAP Solutions",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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    "product": "Red Hat Enterprise Linux 8.6 Extended Update Support",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
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    "versions": [
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        "version": "0:1.12.0-6.el8_6.6",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
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    "cpes": [
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    "product": "Red Hat Enterprise Linux 8.8 Extended Update Support",
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    "versions": [
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        "version": "0:1.12.0-15.el8_8.4",
        "lessThan": "*",
        "versionType": "rpm",
        "status": "unaffected"
      }
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    "cpes": [
      "cpe:/a:redhat:rhel_eus:8.8::appstream"
    ]
  },
  {
    "vendor": "Red Hat",
    "product": "Red Hat Enterprise Linux 9",
    "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
    "packageName": "tigervnc",
    "defaultStatus": "affected",
    "versions": [
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        "version": "0:1.13.1-3.el9_3.3",
        "lessThan": "*",
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        "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": [
      {
        "version": "0:1.20.11-24.el9",
        "lessThan": "*",
        "versionType": "rpm",
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      }
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    ]
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    "product": "Red Hat Enterprise Linux 9.2 Extended Update Support",
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  {
    "vendor": "Red Hat",
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]