Summary
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 write in XIChangeDeviceProperty/RRChangeOutputProperty (CVE-2023-5367)
* 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.
Fixed packages 7
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux · 9 | tigervnc | 1.13.1-3.el9_3.3.alma.1 |
| AlmaLinux · 9 | tigervnc-icons | 1.13.1-3.el9_3.3.alma.1 |
| AlmaLinux · 9 | tigervnc-license | 1.13.1-3.el9_3.3.alma.1 |
| AlmaLinux · 9 | tigervnc-selinux | 1.13.1-3.el9_3.3.alma.1 |
| AlmaLinux · 9 | tigervnc-server | 1.13.1-3.el9_3.3.alma.1 |
| AlmaLinux · 9 | tigervnc-server-minimal | 1.13.1-3.el9_3.3.alma.1 |
| AlmaLinux · 9 | tigervnc-server-module | 1.13.1-3.el9_3.3.alma.1 |
Vulnerabilities 3
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High 7.8
Xorg-x11-server: out-of-bounds write in xichangedeviceproperty/rrchangeoutputproperty
A out-of-bounds write flaw was found in the xorg-x11-server. This issue occurs due to an incorrect calculation of a buffer offset when copying data stored in the heap in the XIChangeDeviceProperty function in Xi/xiproperty.c and in RRChangeOutputProperty func…
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High 7.8
Xorg-x11-server: out-of-bounds memory reads/writes in xkb button actions
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 …
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High 7.6
Xorg-x11-server: out-of-bounds memory read in rrchangeoutputproperty and rrchangeproviderproperty
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.
References
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report
https://access.redhat.com/security/cve/CVE-2023-5367
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report
https://access.redhat.com/security/cve/CVE-2023-6377
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report
https://access.redhat.com/security/cve/CVE-2023-6478
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report
https://bugzilla.redhat.com/2243091
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report
https://bugzilla.redhat.com/2253291
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report
https://bugzilla.redhat.com/2253298
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advisory
https://errata.almalinux.org/9/ALSA-2024-0010.html