Alibaba Cloud Linux 3 : 0203: cups (ALINUX3-SA-2026:0203)

medium Nessus Plugin ID 327260

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 a vulnerability as referenced in the ALINUX3-SA-2026:0203 advisory.

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

CVE-2026-34980:
OpenPrinting CUPS is an open source printing system for Linux and other Unix-like operating systems. In versions 2.4.16 and prior, in a network-exposed cupsd with a shared target queue, an unauthorized client can send a Print-Job to that shared PostScript queue without authentication. The server accepts a page- border value supplied as textWithoutLanguage, preserves an embedded newline through option escaping and reparse, and then reparses the resulting second-line PPD: text as a trusted scheduler control record. A follow-up raw print job can therefore make the server execute an attacker-chosen existing binary such as /usr/bin/vim as lp. At time of publication, there are no publicly available patches.

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

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.

Plugin Details

Severity: Medium

ID: 327260

File Name: alinux3_sa_2026-0203.nasl

Version: 1.2

Type: Local

Family: Alibaba Cloud Linux Local Security Checks

Published: 7/16/2026

Updated: 7/17/2026

Supported Sensors: Nessus

Risk Information

VPR

Risk Factor: High

Score: 7.6

Percentile: 98.46

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5.6

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

CVSS Score Source: CVE-2026-34980

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 7

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

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

CVSS v4

Risk Factor: Medium

Base Score: 6.1

Threat Score: 5.6

Threat Vector: CVSS:4.0/E:P

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

Vulnerability Information

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

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 7/15/2026

Vulnerability Publication Date: 4/3/2026

Exploitable With

Core Impact

Reference Information

CVE: CVE-2026-34980

Detections

Analytics