RHEL 7 : openvswitch2.11 and ovn2.11 (RHSA-2021:0931)

critical Nessus Plugin ID 147881

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Synopsis

The remote Red Hat host is missing one or more security updates for openvswitch2.11 / ovn2.11.

Description

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:0931 advisory.

Open vSwitch provides standard network bridging functions and support for the OpenFlow protocol for remote per-flow control of traffic.

OVN, the Open Virtual Network, is a system to support virtual network abstraction. OVN complements the existing capabilities of OVS to add native support for virtual network abstractions, such as virtual L2 and L3 overlays and security groups.

Security Fix(es):

* buffer overflow in the lldp_decode function in daemon/protocols/lldp.c (CVE-2015-8011)

* librte_vhost Integer overflow in vhost_user_set_log_base() (CVE-2020-10722)

* librte_vhost Integer truncation in vhost_user_check_and_alloc_queue_pair() (CVE-2020-10723)

* librte_vhost Missing inputs validation in Vhost-crypto (CVE-2020-10724)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page listed in the References section.

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

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

Solution

Update the RHEL openvswitch2.11 / ovn2.11 packages based on the guidance in RHSA-2021:0931.

Plugin Details

Severity: Critical

ID: 147881

File Name: redhat-RHSA-2021-0931.nasl

Version: 1.14

Type: local

Agent: unix

Family: Red Hat Local Security Checks

Published: 3/18/2021

Updated: 11/7/2024

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

Risk Information

VPR

Risk Factor: Medium

Score: 5.9

Vendor

Vendor Severity: Important

CVSS v2

Risk Factor: Medium

Base Score: 6.8

Temporal Score: 5

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

CVSS Score Source: CVE-2015-8011

CVSS v3

Risk Factor: Critical

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:redhat:enterprise_linux:openvswitch2.11-test, cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:redhat:enterprise_linux:ovn2.11-vtep, p-cpe:/a:redhat:enterprise_linux:openvswitch-selinux-extra-policy, p-cpe:/a:redhat:enterprise_linux:python-openvswitch2.11, p-cpe:/a:redhat:enterprise_linux:ovn2.11, p-cpe:/a:redhat:enterprise_linux:ovn2.11-host, p-cpe:/a:redhat:enterprise_linux:openvswitch2.11, p-cpe:/a:redhat:enterprise_linux:ovn2.11-central, p-cpe:/a:redhat:enterprise_linux:openvswitch2.11-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: 3/18/2021

Vulnerability Publication Date: 10/16/2015

Reference Information

CVE: CVE-2015-8011, CVE-2020-10722, CVE-2020-10723, CVE-2020-10724

CWE: 120, 125, 190

RHSA: 2021:0931

Detections

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