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CentOS 7 : rpm (RHSA-2021:4785)

high Nessus Plugin ID 155761

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Synopsis

The remote CentOS Linux host is missing a security update.

Description

The remote CentOS Linux 7 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2021:4785 advisory.

 - 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-2021-20271)

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://access.redhat.com/errata/RHSA-2021:4785

Plugin Details

Severity: High

ID: 155761

File Name: centos_RHSA-2021-4785.nasl

Version: 1.3

Type: local

Agent: unix

Published: 12/1/2021

Updated: 10/9/2024

Supported Sensors: Agentless Assessment, Continuous Assessment, Frictionless Assessment Agent, Frictionless Assessment AWS, Frictionless Assessment Azure, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

Vendor

Vendor Severity: Moderate

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:centos:centos:rpm-apidocs, cpe:/o:centos:centos:7, p-cpe:/a:centos:centos:rpm-build, p-cpe:/a:centos:centos:rpm-python, p-cpe:/a:centos:centos:rpm-devel, p-cpe:/a:centos:centos:rpm-libs, p-cpe:/a:centos:centos:rpm-sign, p-cpe:/a:centos:centos:rpm-cron, p-cpe:/a:centos:centos:rpm-plugin-systemd-inhibit, p-cpe:/a:centos:centos:rpm, p-cpe:/a:centos:centos:rpm-build-libs

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

Exploit Ease: No known exploits are available

Patch Publication Date: 12/1/2021

Vulnerability Publication Date: 3/22/2021

Reference Information

CVE: CVE-2021-20271

RHSA: 2021:4785