RHEL 8 : expat (RHSA-2020:4484)

High Nessus Plugin ID 143071

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VPR Score: 4.4

Synopsis

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

Description

The remote Redhat Enterprise Linux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2020:4484 advisory.

- 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)

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 expat, expat-debugsource and / or expat-devel packages.

See Also

https://cwe.mitre.org/data/definitions/122.html

https://cwe.mitre.org/data/definitions/125.html

https://cwe.mitre.org/data/definitions/400.html

https://access.redhat.com/security/cve/CVE-2018-20843

https://access.redhat.com/security/cve/CVE-2019-15903

https://access.redhat.com/errata/RHSA-2020:4484

https://bugzilla.redhat.com/1723723

https://bugzilla.redhat.com/1752592

Plugin Details

Severity: High

ID: 143071

File Name: redhat-RHSA-2020-4484.nasl

Version: 1.3

Type: local

Agent: unix

Published: 2020/11/19

Updated: 2020/11/24

Dependencies: 12634

Risk Information

Risk Factor: High

VPR Score: 4.4

CVSS Score Source: CVE-2018-20843

CVSS v2.0

Base Score: 7.8

Temporal Score: 5.8

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

Temporal Vector: CVSS2#E:U/RL:OF/RC:C

CVSS v3.0

Base Score: 7.5

Temporal Score: 6.5

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:U/RL:O/RC:C

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:8, cpe:/o:redhat:enterprise_linux:8::baseos, p-cpe:/a:redhat:enterprise_linux:expat, p-cpe:/a:redhat:enterprise_linux:expat-debugsource, p-cpe:/a:redhat:enterprise_linux:expat-devel

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

Exploit Ease: No known exploits are available

Patch Publication Date: 2020/11/04

Vulnerability Publication Date: 2019/06/24

Reference Information

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

RHSA: 2020:4484

CWE: 122, 125, 400