CVE-2020-27827

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.41%
Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory gentoo.org Vendor Advisory openvswitch.org
Affected: n/a lldp/openvswitch
Published at:
Updated at:

References

Link Tags
https://bugzilla.redhat.com/show_bug.cgi?id=1921438 patch mitigation third party advisory issue tracking
https://mail.openvswitch.org/pipermail/ovs-dev/2021-January/379471.html vendor advisory mailing list mitigation
https://cert-portal.siemens.com/productcert/pdf/ssa-941426.pdf third party advisory patch
https://us-cert.cisa.gov/ics/advisories/icsa-21-194-07 third party advisory us government resource
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JYA4AMJXCNF6UPFG36L2TPPT32C242SP/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/3T5XHPOGIPWCRRPJUE6P3HVC5PTSD5JS/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/SKQWHG2SZJZSGC7PXVDAEJYBN7ESDR7D/ vendor advisory
https://security.gentoo.org/glsa/202311-16 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-27827?
CVE-2020-27827 has been scored as a high severity vulnerability.
How to fix CVE-2020-27827?
To fix CVE-2020-27827, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-27827 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2020-27827 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-27827?
CVE-2020-27827 affects n/a lldp/openvswitch.
This platform uses data from the NIST NVD, MITRE CVE, MITRE CWE, First.org and CISA KEV but is not endorsed or certified by these entities. CVE is a registred trademark of the MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. CWE is a registred trademark of the MITRE Corporation and the authoritative source of CWE content is MITRE's CWE web site.
© 2025 Under My Watch. All Rights Reserved.