Alibaba Cloud Linux 3 : 0046: rpm (ALINUX3-SA-2021:0046)

high Nessus Plugin ID 236458

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-2021:0046 advisory.

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

CVE-2021-20271:
A flaw was found in RPM's signature check functionality when reading a package file. This flaw allows an attacker who can convince a victim to install a seemingly verifiable package, whose signature header was modified, to cause RPM database corruption and execute code. The highest threat from this vulnerability is to data integrity, confidentiality, and system availability.

CVE-2021-3421:
A flaw was found in the RPM package in the read functionality. This flaw allows an attacker who can convince a victim to install a seemingly verifiable package or compromise an RPM repository, to cause RPM database corruption. The highest threat from this vulnerability is to data integrity. This flaw affects RPM versions before 4.17.0-alpha.

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: 236458

File Name: alinux3_sa_2021-0046.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: 5.9

CVSS v2

Risk Factor: Medium

Base Score: 5.1

Temporal Score: 3.8

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

CVSS Score Source: CVE-2021-20271

CVSS v3

Risk Factor: High

Base Score: 7

Temporal Score: 6.1

Vector: CVSS:3.0/AV:L/AC:H/PR:N/UI:R/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:alibabacloud:alibaba_cloud_linux_3:rpm-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rpm-devel-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rpm-libs-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rpm-plugin-fapolicyd-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rpm-plugin-prioreset, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rpm-plugin-systemd-inhibit-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rpm-apidocs, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rpm-cron, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:python3-rpm-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rpm-devel, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rpm-sign, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rpm-plugin-prioreset-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rpm-sign-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rpm-plugin-fapolicyd, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rpm-build, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rpm-plugin-syslog-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rpm-plugin-ima, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rpm-plugin-systemd-inhibit, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rpm-plugin-selinux-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rpm-plugin-ima-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rpm-build-debuginfo, cpe:/o:alibabacloud:alibaba_cloud_linux_3, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rpm-libs, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rpm, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rpm-build-libs-debuginfo, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rpm-debugsource, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rpm-build-libs, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:python3-rpm, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rpm-plugin-selinux, p-cpe:/a:alibabacloud:alibaba_cloud_linux_3:rpm-plugin-syslog

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

Exploit Ease: No known exploits are available

Patch Publication Date: 7/14/2021

Vulnerability Publication Date: 3/22/2021

Reference Information

CVE: CVE-2021-20271, CVE-2021-3421

Detections

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