Detections
Analytics

RHEL 6 : libxml2 (Unpatched Vulnerability)

critical Nessus Plugin ID 198542

Synopsis

The remote Red Hat 6 host is affected by multiple vulnerabilities that will not be patched.

Description

The remote Redhat Enterprise Linux 6 host has one or more packages installed that are affected by multiple vulnerabilities that have been acknowledged by the vendor but will not be patched.

 - libxml2: Use after free via namespace node in XPointer ranges (CVE-2016-4658)

 - libxml2: Missing validation for external entities in xmlParsePEReference (CVE-2017-7375)

 - libxml2 through 2.9.1 does not properly handle external entities expansion unless an application developer uses the xmlSAX2ResolveEntity or xmlSetExternalEntityLoader function, which allows remote attackers to cause a denial of service (resource consumption), send HTTP requests to intranet servers, or read arbitrary files via a crafted XML document, aka an XML External Entity (XXE) issue. NOTE: it could be argued that because libxml2 already provides the ability to disable external entity expansion, the responsibility for resolving this issue lies with application developers; according to this argument, this entry should be REJECTed and each affected application would need its own CVE. (CVE-2013-0339)

Note that Nessus has not tested for these issues but has instead relied on the package manager's report that the package is installed.

Solution

The vendor has acknowledged the vulnerabilities but no solution has been provided. Refer to the vendor for remediation guidance.

Plugin Details

Severity: Critical

ID: 198542

File Name: redhat_unpatched_libxml2-rhel6.nasl

Version: 1.1

Type: local

Agent: unix

Published: 6/3/2024

Updated: 6/3/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 6.7

CVSS v2

Risk Factor: Critical

Base Score: 10

Temporal Score: 7.8

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

CVSS Score Source: CVE-2016-4658

CVSS v3

Risk Factor: Critical

Base Score: 9.8

Temporal Score: 8.8

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:P/RL:O/RC:C

CVSS Score Source: CVE-2017-7375

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:mingw32-libxml2, cpe:/o:redhat:enterprise_linux:6, p-cpe:/a:redhat:enterprise_linux:libxml2

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

Exploit Available: true

Exploit Ease: Exploits are available

Vulnerability Publication Date: 2/26/2013

Reference Information

CVE: CVE-2013-0339, CVE-2013-2877, CVE-2014-0191, CVE-2016-4483, CVE-2016-4658, CVE-2016-5131, CVE-2016-9318, CVE-2017-0663, CVE-2017-16931, CVE-2017-16932, CVE-2017-5969, CVE-2017-7375, CVE-2017-8872, CVE-2017-9047, CVE-2017-9048, CVE-2017-9049, CVE-2017-9050, CVE-2018-14404