Go to homepageCyberStrike

Menu

Star on GitHub · 3.4k
Sign inDownload

CVE-2020-1763

7.5 · HIGH

An out-of-bounds buffer read flaw was found in the pluto daemon of libreswan from versions 3.27 till 3.31 where, an unauthenticated attacker could use this flaw to crash libreswan by sending specia…

Published May 12, 2020CWE-125EPSS 3.57%

Overview

CVE-2020-1763 is a high-severity vulnerability. It was published on May 12, 2020 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

An out-of-bounds buffer read flaw was found in the pluto daemon of libreswan from versions 3.27 till 3.31 where, an unauthenticated attacker could use this flaw to crash libreswan by sending specially-crafted IKEv1 Informational Exchange packets. The daemon respawns after the crash.

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=1813329Refbugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1763Refcert-portal.siemens.com/productcert/pdf/ssa-379803.pdfGitHubgithub.com/libreswan/libreswan/commit/471a3e41a449d7c753bc4edbba4239501bb62ba8Reflibreswan.org/security/CVE-2020-1763/CVE-2020-1763.txtRefsecurity.gentoo.org/glsa/202007-21CISAus-cert.cisa.gov/ics/advisories/icsa-21-040-04Refwww.debian.org/security/2020/dsa-4684Refbugzilla.redhat.com/show_bug.cgi?id=1813329Refbugzilla.redhat.com/show_bug.cgi?id=CVE-2020-1763

How CyberStrike helps

Frequently asked questions

What is CVE-2020-1763?

CVE-2020-1763 is a high-severity vulnerability. It was published on May 12, 2020 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2020-1763?

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-2020-1763?

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-2020-1763?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2020-1763 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.

Related HIGH CVEs from 2020

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999
Watch the demo →