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Oracle Linux 7 : tigervnc (ELSA-2025-2861)

high Nessus Plugin ID 233579

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Synopsis

The remote Oracle Linux host is missing one or more security updates.

Description

The remote Oracle Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2025-2861 advisory.

 - Fix CVE-2025-26594 xorg-x11-server Use-after-free of the root cursor [Orabug: 37712725]
 - Fix CVE-2025-26595 xorg-x11-server Buffer overflow in XkbVModMaskText()
 - Fix CVE-2025-26596 xorg-x11-server Heap overflow in XkbWriteKeySyms()
 - Fix CVE-2025-26597 xorg-x11-server Buffer overflow in XkbChangeTypesOfKey()
 - Fix CVE-2025-26598 xorg-x11-server Out-of-bounds write in CreatePointerBarrierClient()
 - Fix CVE-2025-26599 xorg-x11-server Use of uninitialized pointer in compRedirectWindow()
 - Fix CVE-2025-26600 xorg-x11-server Use-after-free in PlayReleasedEvents()
 - Fix CVE-2025-26601 xorg-x11-server Use-after-free in SyncInitTrigger()
 - xorg-x11-server: xkb: Fix buffer overflow in _XkbSetCompatMap() [CVE-2024-9632][Orabug: 37295822]
 - Dropped xorg-CVE-2023-5367.patch, xorg-CVE-2023-6816.patch, xorg-CVE-2023-6377.patch, xorg- CVE-2023-6478.patch, xorg-CVE-2024-0229-1.patch, xorg-CVE-2024-0229-2.patch, xorg-CVE-2024-0229-3.patch, xorg- CVE-2024-21885.patch, xorg-CVE-2024-21886-1.patch, xorg-CVE-2024-21886-2.patch, xorg-dix-fix-use-after-free-in-input-device- shutdown.patch, xorg-CVE-2024-31080.patch, xorg-CVE-2024-31081.patch, xorg-CVE-2024-31082.patch, xorg- CVE-2024-31083.patch, xorg-CVE-2024-31083-followup.patch
 - Fix crash caused by fix for CVE-2024-31083 Resolves: RHEL-30976
 - Fix CVE-2024-31080 tigervnc: xorg-x11-server: Heap buffer overread/data leakage in ProcXIGetSelectedEvents Resolves: RHEL-31006
 - Fix CVE-2024-31083 tigervnc: xorg-x11-server: User-after-free in ProcRenderAddGlyphs Resolves: RHEL-30976
 - Fix CVE-2024-31081 tigervnc: xorg-x11-server: Heap buffer overread/data leakage in ProcXIPassiveGrabDevice Resolves: RHEL-30993
 - Fix use after free related to CVE-2024-21886 Resolves: RHEL-20436
 - Fix CVE-2024-21886 tigervnc: xorg-x11-server: heap buffer overflow in DisableDevice Resolves: RHEL-20436
 - Fix CVE-2024-21885 tigervnc: xorg-x11-server: heap buffer overflow in XISendDeviceHierarchyEvent Resolves: RHEL-20427
 - Fix CVE-2024-0229 tigervnc: xorg-x11-server: reattaching to different master device may lead to out-of- bounds memory access Resolves: RHEL-20587
 - Fix CVE-2023-6816 tigervnc: xorg-x11-server: Heap buffer overflow in DeviceFocusEvent and ProcXIQueryPointer Resolves: RHEL-21212
 - Updated fix for CVE-2023-6377 tigervnc: xorg-x11-server: out-of-bounds memory reads/writes in XKB button actions Resolves: RHEL-18415
 - Fix CVE-2023-6377 tigervnc: xorg-x11-server: out-of-bounds memory reads/writes in XKB button actions Resolves: RHEL-18415
 - CVE-2023-6478 tigervnc: xorg-x11-server: out-of-bounds memory read in RRChangeOutputProperty and RRChangeProviderProperty Resolves: RHEL-18427
 - Fix CVE-2023-5380 tigervnc: xorg-x11-server: Use-after-free bug in DestroyWindow Resolves: RHEL-15235
 - Fix CVE-2023-5367 tigervnc: xorg-x11-server: Out-of-bounds write in XIChangeDeviceProperty/RRChangeOutputProperty Resolves: RHEL-15223
 - CVE fix for: CVE-2023-1393 Resolves: bz#2180291
 - CVE fix for: CVE-2023-0494 Resolves: bz#2166532
 - Rebuild for xorg-x11-server CVEs Resolves: CVE-2022-4283 (bz#2154267) Resolves: CVE-2022-46340 (bz#2154261) Resolves: CVE-2022-46341 (bz#2154264) Resolves: CVE-2022-46342 (bz#2154262) Resolves: CVE-2022-46343 (bz#2154265) Resolves: CVE-2022-46344 (bz#2154266)
 - Delete underlying ssecurity in SSecurityVeNCrypt [CCVE-2017-7392] Resolves: bz#1439127 Prevent double free by crafted fences [CVE-2017-7393] Resolves: bz#1439134
 - Be more restrictive with shared memory mode bits Resolves: bz#1152552 Limit max username/password size in SSecurityPlain [CVE-2017-7394] Resolves: bz#1438737 Fix crash from integer overflow in SMsgReader::readClientCutText [CVE-2017-7395] Resolves: bz#1438742
 - Resolves: bz#1248422 CVE-2014-8240 CVE-2014-8241 tigervnc: various flaws
 - Fixed heap-based buffer overflow (CVE-2014-0011, bug #1050928).
 - patches merged
 - tigervnc11-glx.patch
 - tigervnc11-CVE-2011-1775.patch
 - 0001-Use-memmove-instead-of-memcpy-in-fbblt.c-when-memory.patch
 - viewer can send password without proper validation of X.509 certs (CVE-2011-1775)

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the affected packages.

See Also

https://linux.oracle.com/errata/ELSA-2025-2861.html

Plugin Details

Severity: High

ID: 233579

File Name: oraclelinux_ELSA-2025-2861.nasl

Version: 1.1

Type: local

Agent: unix

Published: 3/31/2025

Updated: 3/31/2025

Supported Sensors: Frictionless Assessment Agent, Nessus Agent, Continuous Assessment, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

Vector: CVSS2#AV:L/AC:L/Au:S/C:C/I:C/A:C

CVSS Score Source: CVE-2025-26601

CVSS v3

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.8

Vector: CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

CPE: p-cpe:/a:oracle:linux:tigervnc-server-applet, p-cpe:/a:oracle:linux:tigervnc-server-minimal, p-cpe:/a:oracle:linux:tigervnc, p-cpe:/a:oracle:linux:tigervnc-icons, p-cpe:/a:oracle:linux:tigervnc-server, cpe:/o:oracle:linux:7, p-cpe:/a:oracle:linux:tigervnc-license, cpe:/a:oracle:linux:7:9:latest_els, p-cpe:/a:oracle:linux:tigervnc-server-module

Required KB Items: Host/local_checks_enabled, Host/RedHat/release, Host/RedHat/rpm-list, Host/OracleLinux

Exploit Ease: No known exploits are available

Patch Publication Date: 3/31/2025

Vulnerability Publication Date: 2/18/2025

Reference Information

CVE: CVE-2025-26594, CVE-2025-26595, CVE-2025-26596, CVE-2025-26597, CVE-2025-26598, CVE-2025-26599, CVE-2025-26600, CVE-2025-26601