Alibaba Cloud Linux 3 : 0049: cups (ALINUX3-SA-2024:0049)

high Nessus Plugin ID 236335

Synopsis

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

Description

The remote Alibaba Cloud Linux 3 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALINUX3-SA-2024:0049 advisory.

Package updates are available for Alibaba Cloud Linux 3 that fix the following vulnerabilities:

CVE-2023-32324:
OpenPrinting CUPS is an open source printing system. In versions 2.4.2 and prior, a heap buffer overflow vulnerability would allow a remote attacker to launch a denial of service (DoS) attack. A buffer overflow vulnerability in the function `format_log_line` could allow remote attackers to cause a DoS on the affected system. Exploitation of the vulnerability can be triggered when the configuration file `cupsd.conf` sets the value of `loglevel `to `DEBUG`. No known patches or workarounds exist at time of publication.

CVE-2023-34241:
OpenPrinting CUPS is a standards-based, open source printing system for Linux and other Unix-like operating systems. Starting in version 2.0.0 and prior to version 2.4.6, CUPS logs data of free memory to the logging service AFTER the connection has been closed, when it should have logged the data right before. This is a use-after-free bug that impacts the entire cupsd process.
The exact cause of this issue is the function `httpClose(con->http)` being called in `scheduler/client.c`.
The problem is that httpClose always, provided its argument is not null, frees the pointer at the end of the call, only for cupsdLogClient to pass the pointer to httpGetHostname. This issue happens in function `cupsdAcceptClient` if LogLevel is warn or higher and in two scenarios: there is a double-lookup for the IP Address (HostNameLookups Double is set in `cupsd.conf`) which fails to resolve, or if CUPS is compiled with TCP wrappers and the connection is refused by rules from `/etc/hosts.allow` and `/etc/hosts.deny`.
Version 2.4.6 has a patch for this issue.

Tenable has extracted the preceding description block directly from the Alibaba Cloud 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.

Plugin Details

Severity: High

ID: 236335

File Name: alinux3_sa_2024-0049.nasl

Version: 1.1

Type: local

Family: Alibaba Cloud Linux Local Security Checks

Published: 5/14/2025

Updated: 5/14/2025

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 6.0

CVSS v2

Risk Factor: Medium

Base Score: 6.2

Temporal Score: 4.9

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

CVSS Score Source: CVE-2023-34241

CVSS v3

Risk Factor: High

Base Score: 7.1

Temporal Score: 6.4

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

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

Vulnerability Information

CPE: p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:cups-client, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:cups-ipptool, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:cups, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:cups-libs-debuginfo, cpe:/o:alibabacloud:alibaba_cloud_linux_3, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:cups-filesystem, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:cups-libs, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:cups-client-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:cups-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:cups-ipptool-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:cups-lpd-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:cups-devel, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:cups-debugsource, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:cups-doc, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:cups-lpd

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 4/12/2024

Vulnerability Publication Date: 6/1/2023

Reference Information

CVE: CVE-2023-32324, CVE-2023-34241

Detections

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