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CVE fixes for LTS 8.6 libX11
CVE-2023-3138 CVE-2023-43785 CVE-2023-43786 CVE-2023-43787
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‎csaf/vex/cve/2023/cve-2023-3138.json‎

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{
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"document": {
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"category": "csaf_vex",
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"csaf_version": "2.0",
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"distribution": {
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"text": "Copyright (c) CIQ, Inc. All rights reserved. Some vulnerability data may have been imported from https://access.redhat.com/security/data/csaf/v2/vex/ licensed under the same terms and copyright (c) Red Hat, Inc. All rights reserved.",
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"tlp": {
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"label": "WHITE",
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"url": "https://www.first.org/tlp/"
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}
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},
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"notes": [
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{
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"category": "legal_disclaimer",
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"text": "This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to the original copyright holder(s) and provide a link to the original.",
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"title": "Terms of Use"
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}
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],
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"publisher": {
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"category": "vendor",
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"name": "CIQ",
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"namespace": "https://www.ciq.com"
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},
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"title": "CIQ Security Advisory: Remediation of CVE-2023-3138",
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"tracking": {
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"id": "CVE-2023-3138",
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"initial_release_date": "2025-09-19T21:07:03Z",
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"current_release_date": "2025-09-19T21:07:03Z",
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"status": "final",
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"version": "1",
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"revision_history": [
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{
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"date": "2025-09-19T21:07:03Z",
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"number": "1",
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"summary": "Initial version"
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"vulnerabilities": [
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{
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"cve": "CVE-2023-3138",
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"notes": [
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{
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"category": "description",
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"text": "A vulnerability was found in libX11. The security flaw occurs because the functions in src/InitExt.c in libX11 do not check that the values provided for the Request, Event, or Error IDs are within the bounds of the arrays that those functions write to, using those IDs as array indexes. They trust that they were called with values provided by an Xserver adhering to the bounds specified in the X11 protocol, as all X servers provided by X.Org do. As the protocol only specifies a single byte for these values, an out-of-bounds value provided by a malicious server (or a malicious proxy-in-the-middle) can only overwrite other portions of the Display structure and not write outside the bounds of the Display structure itself, possibly causing the client to crash with this memory corruption."
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"remediations": [
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{
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"category": "vendor_fix",
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"details": "CIQ has released new versions of the affected packages, please update the packages to the newest version from Mountain.",
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],
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"scores": [
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{
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"cvss_v3": {
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"attackComplexity": "LOW",
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"attackVector": "NETWORK",
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"availabilityImpact": "HIGH",
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"baseScore": 7.3,
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"baseSeverity": "HIGH",
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"confidentialityImpact": "NONE",
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"integrityImpact": "HIGH",
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"privilegesRequired": "LOW",
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"scope": "UNCHANGED",
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"userInteraction": "REQUIRED",
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"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:H/A:H",
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"version": "3.1"
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},
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