RHEL 7 : openvswitch2.13 (RHSA-2021:0835)

high Nessus Plugin ID 147806

Synopsis

The remote Red Hat host is missing one or more security updates.

Description

The remote Redhat Enterprise Linux 7 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2021:0835 advisory.

- lldp/openvswitch: denial of service via externally triggered memory leak (CVE-2020-27827)

- openvswitch: limitation in the OVS packet parsing in userspace leads to DoS (CVE-2020-35498)

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 affected packages.

See Also

https://access.redhat.com/security/cve/CVE-2020-27827

https://access.redhat.com/security/cve/CVE-2020-35498

https://access.redhat.com/errata/RHSA-2021:0835

https://bugzilla.redhat.com/1908845

https://bugzilla.redhat.com/1921438

Plugin Details

Severity: High

ID: 147806

File Name: redhat-RHSA-2021-0835.nasl

Version: 1.10

Type: local

Agent: unix

Published: 3/15/2021

Updated: 5/24/2023

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

Risk Information

VPR

Risk Factor: Low

Score: 3.6

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

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

CVSS Score Source: CVE-2020-35498

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

Vulnerability Information

CPE: cpe:/o:redhat:enterprise_linux:7, p-cpe:/a:redhat:enterprise_linux:openvswitch2.13, p-cpe:/a:redhat:enterprise_linux:openvswitch2.13-devel, p-cpe:/a:redhat:enterprise_linux:openvswitch2.13-ipsec, p-cpe:/a:redhat:enterprise_linux:openvswitch2.13-test, p-cpe:/a:redhat:enterprise_linux:python3-openvswitch2.13

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: 3/15/2021

Vulnerability Publication Date: 2/11/2021

Reference Information

CVE: CVE-2020-27827, CVE-2020-35498

CWE: 400

RHSA: 2021:0835