rhsa-2023_0622
Vulnerability from csaf_redhat
Published
2023-02-07 15:26
Modified
2024-11-06 02:23
Summary
Red Hat Security Advisory: tigervnc security update
Notes
Topic
An update for tigervnc is now available for Red Hat Enterprise Linux 9.
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: DeepCopyPointerClasses use-after-free leads to privilege elevation (CVE-2023-0494)
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.
{ "document": { "aggregate_severity": { "namespace": "https://access.redhat.com/security/updates/classification/", "text": "Important" }, "category": "csaf_security_advisory", "csaf_version": "2.0", "distribution": { "text": "Copyright \u00a9 Red Hat, Inc. All rights reserved.", "tlp": { "label": "WHITE", "url": "https://www.first.org/tlp/" } }, "lang": "en", "notes": [ { "category": "summary", "text": "An update for tigervnc is now available for Red Hat Enterprise Linux 9.\n\nRed 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.", "title": "Topic" }, { "category": "general", "text": "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.\n\nSecurity Fix(es):\n\n* xorg-x11-server: DeepCopyPointerClasses use-after-free leads to privilege elevation (CVE-2023-0494)\n\nFor 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.", "title": "Details" }, { "category": "legal_disclaimer", "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 Red Hat Inc. and provide a link to the original.", "title": "Terms of Use" } ], "publisher": { "category": "vendor", "contact_details": "https://access.redhat.com/security/team/contact/", "issuing_authority": "Red Hat Product Security is responsible for vulnerability handling across all Red Hat products and services.", "name": "Red Hat Product Security", "namespace": "https://www.redhat.com" }, "references": [ { "category": "self", "summary": "https://access.redhat.com/errata/RHSA-2023:0622", "url": "https://access.redhat.com/errata/RHSA-2023:0622" }, { "category": "external", "summary": "https://access.redhat.com/security/updates/classification/#important", "url": "https://access.redhat.com/security/updates/classification/#important" }, { "category": "external", "summary": "2165995", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2165995" }, { "category": "self", "summary": "Canonical 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"category": "default_component_of", "full_product_name": { "name": "tigervnc-server-module-debuginfo-0:1.12.0-5.el9_1.1.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)", "product_id": "AppStream-9.1.0.Z.MAIN:tigervnc-server-module-debuginfo-0:1.12.0-5.el9_1.1.x86_64" }, "product_reference": "tigervnc-server-module-debuginfo-0:1.12.0-5.el9_1.1.x86_64", "relates_to_product_reference": "AppStream-9.1.0.Z.MAIN" } ] }, "vulnerabilities": [ { "cve": "CVE-2023-0494", "cwe": { "id": "CWE-416", "name": "Use After Free" }, "discovery_date": "2023-01-31T00:00:00+00:00", "ids": [ { "system_name": "Red Hat Bugzilla ID", "text": "2165995" } ], "notes": [ { "category": "description", "text": "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.", "title": "Vulnerability description" }, { "category": "summary", "text": "xorg-x11-server: DeepCopyPointerClasses use-after-free leads to privilege elevation", "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 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" } ], "product_status": { "fixed": [ "AppStream-9.1.0.Z.MAIN:tigervnc-0:1.12.0-5.el9_1.1.aarch64", 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"references": [ { "category": "self", "summary": "Canonical URL", "url": "https://access.redhat.com/security/cve/CVE-2023-0494" }, { "category": "external", "summary": "RHBZ#2165995", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2165995" }, { "category": "external", "summary": "https://www.cve.org/CVERecord?id=CVE-2023-0494", "url": "https://www.cve.org/CVERecord?id=CVE-2023-0494" }, { "category": "external", "summary": "https://nvd.nist.gov/vuln/detail/CVE-2023-0494", "url": "https://nvd.nist.gov/vuln/detail/CVE-2023-0494" }, { "category": "external", "summary": "https://github.com/advisories/GHSA-5v6x-2hpj-c37x", "url": "https://github.com/advisories/GHSA-5v6x-2hpj-c37x" } ], "release_date": "2023-02-07T00:00:00+00:00", "remediations": [ { "category": "vendor_fix", "date": "2023-02-07T15:26:39+00:00", "details": "For details on how to apply this update, which includes the changes described in this advisory, refer to:\n\nhttps://access.redhat.com/articles/11258", "product_ids": 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Sightings
Author | Source | Type | Date |
---|
Nomenclature
- 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.