Amazon Linux 2 : libxml2 (ALAS-2019-1301)

Critical Nessus Plugin ID 129559

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VPR Score: 5.9

Synopsis

The remote Amazon Linux 2 host is missing a security update.

Description

xpointer.c in libxml2 before 2.9.5 (as used in Apple iOS before 10, OS X before 10.12, tvOS before 10, and watchOS before 3, and other products) does not forbid namespace nodes in XPointer ranges, which allows remote attackers to execute arbitrary code or cause a denial of service (use-after-free and memory corruption) via a crafted XML document. (CVE-2016-4658)

parser.c in libxml2 before 2.9.5 mishandles parameter-entity references because the NEXTL macro calls the xmlParserHandlePEReference function in the case of a '%' character in a DTD name. (CVE-2017-16931)

Solution

Run 'yum update libxml2' to update your system.

See Also

https://alas.aws.amazon.com/AL2/ALAS-2019-1301.html

Plugin Details

Severity: Critical

ID: 129559

File Name: al2_ALAS-2019-1301.nasl

Version: 1.2

Type: local

Agent: unix

Published: 2019/10/04

Updated: 2019/12/23

Dependencies: 12634

Risk Information

Risk Factor: Critical

VPR Score: 5.9

CVSS v2.0

Base Score: 10

Temporal Score: 7.4

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

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

CVSS v3.0

Base Score: 9.8

Temporal Score: 8.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/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:amazon:linux:libxml2, p-cpe:/a:amazon:linux:libxml2-debuginfo, p-cpe:/a:amazon:linux:libxml2-devel, p-cpe:/a:amazon:linux:libxml2-python, p-cpe:/a:amazon:linux:libxml2-static, cpe:/o:amazon:linux:2

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

Exploit Ease: No known exploits are available

Patch Publication Date: 2019/10/02

Vulnerability Publication Date: 2016/09/25

Reference Information

CVE: CVE-2016-4658, CVE-2017-16931

ALAS: 2019-1301