Red Hat Security Advisory: tigervnc security update

Fixed packages 36

Vulnerabilities 4

• Critical 9.8
  CVE-2023-6816

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

  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'…

  Red Hat Red Hat Enterprise Linux 9 Red Hat Enterprise Linux 8 Red Hat Enterprise Linux 7 Linux Debian Ubuntu Azure Linux Alpine Wolfi
  Jan 18, 2024
• High 7.8
  CVE-2024-0229

  Xorg-x11-server: reattaching to different master device may lead to out-of-bounds memory access

  An out-of-bounds memory access flaw was found in the X.Org server. This issue can be triggered when a device frozen by a sync grab is reattached to a different master device. This issue may lead to an application crash, local privilege escalation (if the serv…

  Red Hat Red Hat Enterprise Linux 9 Red Hat Enterprise Linux 8 Red Hat Enterprise Linux 7 Linux Debian Ubuntu Azure Linux Alpine Wolfi
  Feb 9, 2024
• High 7.8
  CVE-2024-21885

  Xorg-x11-server: heap buffer overflow in xisenddevicehierarchyevent

  A flaw was found in X.Org server. In the XISendDeviceHierarchyEvent function, it is possible to exceed the allocated array length when certain new device IDs are added to the xXIHierarchyInfo struct. This can trigger a heap buffer overflow condition, which ma…

  Red Hat Red Hat Enterprise Linux 9 Red Hat Enterprise Linux 8 Red Hat Enterprise Linux 7 Linux Debian Ubuntu Azure Linux Alpine Wolfi
  Feb 28, 2024
• High 7.8
  CVE-2024-21886

  Xorg-x11-server: heap buffer overflow in disabledevice

  A heap buffer overflow flaw was found in the DisableDevice function in the X.Org server. This issue may lead to an application crash or, in some circumstances, remote code execution in SSH X11 forwarding environments.

  Red Hat Red Hat Enterprise Linux 9 Red Hat Enterprise Linux 8 Red Hat Enterprise Linux 7 Linux Debian Ubuntu Azure Linux Alpine Wolfi
  Feb 28, 2024

References

• article
  https://access.redhat.com/security/updates/classification/#important
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2256540
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2256542
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2256690
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2257691
• advisory
  https://security.access.redhat.com/data/csaf/v2/advisories/2024/rhsa-2024_0558.json
• report
  https://access.redhat.com/security/cve/CVE-2023-6816
• advisory
  https://www.cve.org/CVERecord?id=CVE-2023-6816
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2023-6816
• report
  https://access.redhat.com/security/cve/CVE-2024-0229
• advisory
  https://www.cve.org/CVERecord?id=CVE-2024-0229
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2024-0229
• report
  https://access.redhat.com/security/cve/CVE-2024-21885
• advisory
  https://www.cve.org/CVERecord?id=CVE-2024-21885
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2024-21885
• report
  https://access.redhat.com/security/cve/CVE-2024-21886
• advisory
  https://www.cve.org/CVERecord?id=CVE-2024-21886
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2024-21886