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Azure Linux 3.0 Security Update: qt5-qtbase / qtbase (CVE-2025-5455)

high Nessus Plugin ID 244788

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Synopsis

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

Description

The version of qt5-qtbase / qtbase installed on the remote Azure Linux 3.0 host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the CVE-2025-5455 advisory.

 - An issue was found in the private API function qDecodeDataUrl() in QtCore, which is used in QTextDocument and QNetworkReply, and, potentially, in user code. If the function was called with malformed data, for example, an URL that contained a charset parameter that lacked a value (such as data:charset,), and Qt was built with assertions enabled, then it would hit an assertion, resulting in a denial of service (abort). This impacts Qt up to 5.15.18, 6.0.0->6.5.8, 6.6.0->6.8.3 and 6.9.0. This has been fixed in 5.15.19, 6.5.9, 6.8.4 and 6.9.1. (CVE-2025-5455)

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

Solution

Update the affected packages.

See Also

https://nvd.nist.gov/vuln/detail/CVE-2025-5455

Plugin Details

Severity: High

ID: 244788

File Name: azure_linux_CVE-2025-5455.nasl

Version: 1.1

Type: local

Published: 8/7/2025

Updated: 8/7/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Low

Score: 1.4

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2025-5455

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Temporal Score: 4.6

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

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

CVSS v4

Risk Factor: High

Base Score: 8.4

Threat Score: 5.7

Threat Vector: CVSS:4.0/E:U

Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:H/VA:H/SC:N/SI:H/SA:H

Vulnerability Information

CPE: p-cpe:/a:microsoft:azure_linux:qtbase-gui, p-cpe:/a:microsoft:azure_linux:qtbase-examples, p-cpe:/a:microsoft:azure_linux:qtbase-common, p-cpe:/a:microsoft:azure_linux:qt5-qtbase-private-devel, p-cpe:/a:microsoft:azure_linux:qtbase-debuginfo, p-cpe:/a:microsoft:azure_linux:qtbase-static, p-cpe:/a:microsoft:azure_linux:qt5-qtbase-devel, p-cpe:/a:microsoft:azure_linux:qt5-qtbase, p-cpe:/a:microsoft:azure_linux:qtbase-private-devel, p-cpe:/a:microsoft:azure_linux:qt5-qtbase-examples, p-cpe:/a:microsoft:azure_linux:qt5-qtbase-static, p-cpe:/a:microsoft:azure_linux:qtbase, p-cpe:/a:microsoft:azure_linux:qtbase-devel, x-cpe:/o:microsoft:azure_linux, p-cpe:/a:microsoft:azure_linux:qt5-qtbase-common, p-cpe:/a:microsoft:azure_linux:qt5-qtbase-gui

Required KB Items: Host/local_checks_enabled, Host/cpu, Host/AzureLinux/release, Host/AzureLinux/rpm-list

Exploit Ease: No known exploits are available

Patch Publication Date: 8/6/2025

Vulnerability Publication Date: 6/2/2025

Reference Information

CVE: CVE-2025-5455