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ALSA-2023:0622 — Important: tigervnc security update

Affected: AlmaLinux:9: tigervnc, AlmaLinux:9: tigervnc-icons, AlmaLinux:9: tigervnc-license, AlmaLinux:9: tigervnc-selinux, AlmaLinux:9: tigervnc-server, AlmaLinux:9: tigervnc-server-minimal, AlmaLinux:9: tigervnc-server-module

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.

bdu:2023-00910

Withdrawn: BELL-CVE-2023-0494 — CVE-2023-0494 does not affect BellSoft software

Withdrawn by the publisher.

certfr-2024-avi-0119 — De multiples vulnérabilités ont été découvertes dans les produits Siemens. Certaines d'entr…

certfr-2024-avi-0119

EUVD-2026-218757

fkie_cve-2023-0494

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.

GHSA-5v6x-2hpj-c37x

gsd-2023-0494

ICSA-24-046-11 — Siemens SCALANCE XCM-/XRM-300

A carefully crafted If: request header can cause a memory read, or write of a single zero byte, in a pool (heap) memory location beyond the header value sent. This could cause the process to crash.

This issue affects Apache HTTP Server 2.4.54 and earlier. A flaw was found in python. In algorithms with quadratic time complexity using non-binary bases, when using int("text"), a system could take 50ms to parse an int string with 100,000 digits and 5s for 1,000,000 digits (float, decimal, int.from_bytes(), and int() for binary bases 2, 4, 8, 16, and 32 are not affected). The highest threat from this vulnerability is to system availability. A flaw was found in libdnf's signature verification functionality in versions before 0.60.1. This flaw allows an attacker to achieve code execution if they can alter the header information of an RPM package and then trick a user or system into installing it. The highest risk of this vulnerability is to confidentiality, integrity, as well as system availability. An out-of-bounds memory access flaw was found in the ATI VGA device emulation of QEMU. This flaw occurs in the ati_2d_blt() routine while handling MMIO write operations when the guest provides invalid values for the destination display parameters. A malicious guest could use this flaw to crash the QEMU process on the host, resulting in a denial of service. A vulnerability was found in the fs/inode.c:inode_init_owner() function logic of the LInux kernel that allows local users to create…

OESA-2023-1127 — xorg-x11-server security update

Affected: openEuler:20.03-LTS-SP1: xorg-x11-server, openEuler:20.03-LTS-SP3: xorg-x11-server, openEuler:22.03-LTS: xorg-x11-server, openEuler:22.03-LTS-SP1: xorg-x11-server

X.Org X11 X server Security Fix(es): 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.(CVE-2023-0494)

openSUSE-SU-2024:12664-1 — xorg-x11-server-21.1.7-1.1 on GA media

xorg-x11-server-21.1.7-1.1 on GA media

RHSA-2023:0623 — Red Hat Security Advisory: tigervnc security update

xorg-x11-server: DeepCopyPointerClasses use-after-free leads to privilege elevation

SUSE-SU-2023:0282-1 — Security update for xorg-x11-server

Security update for xorg-x11-server

UBUNTU-CVE-2023-0494

Affected: Ubuntu:Pro:14.04:LTS: xorg-server, Ubuntu:Pro:16.04:LTS: xorg-server, Ubuntu:Pro:16.04:LTS: xorg-server-hwe-16.04, Ubuntu:18.04:LTS: xorg-server, Ubuntu:18.04:LTS: xorg-server-hwe-18.04, Ubuntu:20.04:LTS: xorg-server, Ubuntu:22.04:LTS: xorg-server, Ubuntu:22.04:LTS: xwayland

WID-SEC-W-2023-0293 — X.Org X11: Schwachstelle ermöglicht Privilegieneskalation

Ein lokaler Angreifer kann eine Schwachstelle in X.Org X11 ausnutzen, um seine Privilegien zu erhöhen.