CentOS 7 : expat (CESA-2020:3952)

high Nessus Plugin ID 141594
New! Plugin Severity Now Using CVSS v3

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Synopsis

The remote CentOS Linux host is missing one or more security updates.

Description

The remote CentOS Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the CESA-2020:3952 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-devel and / or expat-static packages.

See Also

http://www.nessus.org/u?b3f4ea56

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

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

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

Plugin Details

Severity: High

ID: 141594

File Name: centos_RHSA-2020-3952.nasl

Version: 1.4

Type: local

Agent: unix

Published: 10/20/2020

Updated: 11/6/2020

Dependencies: ssh_get_info.nasl

Risk Information

CVSS Score Source: CVE-2018-20843

VPR

Risk Factor: Medium

Score: 4.4

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

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

CVSS v3

Risk Factor: High

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: E:U/RL:O/RC:C

Vulnerability Information

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

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: 10/20/2020

Vulnerability Publication Date: 6/24/2019

Reference Information

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

RHSA: 2020:3952

CWE: 122, 125, 400