RHEL 7 : expat (RHSA-2020:3952)

high Nessus Plugin ID 141017

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Synopsis

The remote Red Hat host is missing one or more security updates for expat.

Description

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:3952 advisory.

Expat is a C library for parsing XML documents.

Security Fix(es):

* expat: large number of colons in input makes parser consume high amount of resources, leading to DoS (CVE-2018-20843)

* expat: heap-based buffer over-read via crafted XML input (CVE-2019-15903)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Additional Changes:

For detailed information on changes in this release, see the Red Hat Enterprise Linux 7.9 Release Notes linked from the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise 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 RHEL expat package based on the guidance in RHSA-2020:3952.

Plugin Details

Severity: High

ID: 141017

File Name: redhat-RHSA-2020-3952.nasl

Version: 1.13

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 9/29/2020

Updated: 11/7/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 4.4

Vendor

Vendor Severity: Moderate

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 6.1

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

CVSS Score Source: CVE-2018-20843

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.7

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

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

CVSS Score Source: CVE-2019-15903

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:expat-devel, p-cpe:/a:redhat:enterprise_linux:expat, p-cpe:/a:redhat:enterprise_linux:expat-static, cpe:/o:redhat:enterprise_linux:7

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

Exploit Available: true

Exploit Ease: Exploits are available

Patch Publication Date: 9/29/2020

Vulnerability Publication Date: 6/24/2019

Reference Information

CVE: CVE-2018-20843, CVE-2019-15903

CWE: 125, 400

RHSA: 2020:3952

Detections

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