RHEL 7 : python-defusedxml and python-pysaml2 (RHSA-2017:0936)

high Nessus Plugin ID 210176

Synopsis

The remote Red Hat host is missing a security update for python-defusedxml / python-pysaml2.

Description

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by a vulnerability as referenced in the RHSA-2017:0936 advisory.

The defusedxml package contains several Python-only updates for security vulnerabilities in Python's XML libraries. Defusedxml functions and classes can be used instead of the originals to protect against entity-expansion and DTD-retrieval issues.

PySAML2 is the python implementation of SAML Version 2, containing all the functionality for building a SAML2 service provider or an identity provider, to be used in a WSGI environment.

Security Fix(es):

* An XML entity expansion vulnerability was found in python-pysaml2. A remote attacker could send a crafted request which would cause denial of service through resource exhaustion. (CVE-2016-10149)

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

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 RHEL python-defusedxml / python-pysaml2 packages based on the guidance in RHSA-2017:0936.

Plugin Details

Severity: High

ID: 210176

File Name: redhat-RHSA-2017-0936.nasl

Version: 1.1

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 11/4/2024

Updated: 11/4/2024

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

Risk Information

VPR

Risk Factor: Low

Score: 3.6

Vendor

Vendor Severity: Moderate

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

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

CVSS Score Source: CVE-2016-10149

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:H/I:N/A:N

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

Vulnerability Information

CPE: p-cpe:/a:redhat:enterprise_linux:python-pysaml2, p-cpe:/a:redhat:enterprise_linux:python-defusedxml, cpe:/o:redhat:enterprise_linux:7

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: 4/12/2017

Vulnerability Publication Date: 3/24/2017

Reference Information

CVE: CVE-2016-10149

CWE: 776

RHSA: 2017:0936

Detections

Analytics