rhsa-2024_0017
Vulnerability from csaf_redhat
Published
2024-01-02 08:46
Modified
2024-11-06 04:36
Summary
Red Hat Security Advisory: tigervnc security update
Notes
Topic
An update for tigervnc is now available for Red Hat Enterprise Linux 8.2 Advanced Update Support, Red Hat Enterprise Linux 8.2 Telecommunications Update Service, and Red Hat Enterprise Linux 8.2 Update Services for SAP Solutions.
Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.
Details
Virtual Network Computing (VNC) is a remote display system which allows users to view a computing desktop environment not only on the machine where it is running, but from anywhere on the Internet and from a wide variety of machine architectures. TigerVNC is a suite of VNC servers and clients.
Security Fix(es):
* xorg-x11-server: out-of-bounds memory reads/writes in XKB button actions (CVE-2023-6377)
* xorg-x11-server: out-of-bounds memory read in RRChangeOutputProperty and RRChangeProviderProperty (CVE-2023-6478)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Terms of Use
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 Red Hat Inc. and provide a link to the original.
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"name": "Out-of-bounds Read"
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"discovery_date": "2023-11-30T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2253291"
}
],
"notes": [
{
"category": "description",
"text": "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.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "xorg-x11-server: out-of-bounds memory reads/writes in XKB button actions",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "Xorg server does not run with root privileges in Red Hat Enterprise Linux 8 and 9, therefore, Red Hat Enterprise Linux 8 and 9 have been rated with a moderate severity.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
"title": "CVSS score applicability"
}
],
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"references": [
{
"category": "self",
"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2023-6377"
},
{
"category": "external",
"summary": "RHBZ#2253291",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2253291"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2023-6377",
"url": "https://www.cve.org/CVERecord?id=CVE-2023-6377"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-6377",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-6377"
},
{
"category": "external",
"summary": "https://gitlab.freedesktop.org/xorg/xserver/-/commit/0c1a93d319558fe3ab2d94f51d174b4f93810afd",
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{
"category": "external",
"summary": "https://lists.x.org/archives/xorg-announce/2023-December/003435.html",
"url": "https://lists.x.org/archives/xorg-announce/2023-December/003435.html"
}
],
"release_date": "2023-12-13T00:00:00+00:00",
"remediations": [
{
"category": "vendor_fix",
"date": "2024-01-02T08:46:17+00:00",
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{
"cvss_v3": {
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"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"
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"details": "Important"
}
],
"title": "xorg-x11-server: out-of-bounds memory reads/writes in XKB button actions"
},
{
"acknowledgments": [
{
"names": [
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],
"organization": "Red Hat",
"summary": "This issue was discovered by Red Hat."
}
],
"cve": "CVE-2023-6478",
"cwe": {
"id": "CWE-190",
"name": "Integer Overflow or Wraparound"
},
"discovery_date": "2023-11-30T00:00:00+00:00",
"ids": [
{
"system_name": "Red Hat Bugzilla ID",
"text": "2253298"
}
],
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{
"category": "description",
"text": "A flaw was found in xorg-server. A specially crafted request to RRChangeProviderProperty or RRChangeOutputProperty can trigger an integer overflow which may lead to a disclosure of sensitive information.",
"title": "Vulnerability description"
},
{
"category": "summary",
"text": "xorg-x11-server: out-of-bounds memory read in RRChangeOutputProperty and RRChangeProviderProperty",
"title": "Vulnerability summary"
},
{
"category": "other",
"text": "Xorg server does not run with root privileges in Red Hat Enterprise Linux 8 and 9, therefore, Red Hat Enterprise Linux 8 and 9 have been rated with a moderate severity.",
"title": "Statement"
},
{
"category": "general",
"text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
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"references": [
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"summary": "Canonical URL",
"url": "https://access.redhat.com/security/cve/CVE-2023-6478"
},
{
"category": "external",
"summary": "RHBZ#2253298",
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2253298"
},
{
"category": "external",
"summary": "https://www.cve.org/CVERecord?id=CVE-2023-6478",
"url": "https://www.cve.org/CVERecord?id=CVE-2023-6478"
},
{
"category": "external",
"summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-6478",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2023-6478"
},
{
"category": "external",
"summary": "https://gitlab.freedesktop.org/xorg/xserver/-/commit/14f480010a93ff962fef66a16412fafff81ad632",
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{
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"summary": "https://lists.x.org/archives/xorg-announce/2023-December/003435.html",
"url": "https://lists.x.org/archives/xorg-announce/2023-December/003435.html"
}
],
"release_date": "2023-12-13T00:00:00+00:00",
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{
"category": "vendor_fix",
"date": "2024-01-02T08:46:17+00:00",
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],
"scores": [
{
"cvss_v3": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 7.6,
"baseSeverity": "HIGH",
"confidentialityImpact": "HIGH",
"integrityImpact": "LOW",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:L",
"version": "3.1"
},
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}
],
"threats": [
{
"category": "impact",
"details": "Important"
}
],
"title": "xorg-x11-server: out-of-bounds memory read in RRChangeOutputProperty and RRChangeProviderProperty"
}
]
}
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- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.