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CVE-2020-27827

7.5 · HIGH

A flaw was found in multiple versions of OpenvSwitch.

Published Mar 18, 2021CWE-400EPSS 3.23%

Overview

CVE-2020-27827 is a high-severity vulnerability. It was published on March 18, 2021 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

A flaw was found in multiple versions of OpenvSwitch. Specially crafted LLDP packets can cause memory to be lost when allocating data to handle specific optional TLVs, potentially causing a denial of service. The highest threat from this vulnerability is to system availability.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refbugzilla.redhat.com/show_bug.cgi?id=1921438Refcert-portal.siemens.com/productcert/pdf/ssa-941426.pdfReflists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3T5XHPOGIPWCRRPJUE6P3HVC5PTSD5JS/Reflists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JYA4AMJXCNF6UPFG36L2TPPT32C242SP/Reflists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SKQWHG2SZJZSGC7PXVDAEJYBN7ESDR7D/Refmail.openvswitch.org/pipermail/ovs-dev/2021-January/379471.htmlRefsecurity.gentoo.org/glsa/202311-16CISAus-cert.cisa.gov/ics/advisories/icsa-21-194-07Refbugzilla.redhat.com/show_bug.cgi?id=1921438Refcert-portal.siemens.com/productcert/pdf/ssa-941426.pdf

How CyberStrike helps

Frequently asked questions

What is CVE-2020-27827?

CVE-2020-27827 is a high-severity vulnerability. It was published on March 18, 2021 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2020-27827?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2020-27827?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2020-27827?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2020-27827 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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