Go to homepageCyberStrike

Menu

Star on GitHub · 3.2k
Sign inDownload

CVE-2021-27919

5.5 · MEDIUM

archive/zip in Go 1.16.x before 1.16.1 allows attackers to cause a denial of service (panic) upon attempted use of the Reader.Open API for a ZIP archive in which ../ occurs at the beginning of any…

Published Mar 11, 2021EPSS 1.52%

Overview

CVE-2021-27919 is a medium-severity vulnerability. It was published on March 11, 2021 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

archive/zip in Go 1.16.x before 1.16.1 allows attackers to cause a denial of service (panic) upon attempted use of the Reader.Open API for a ZIP archive in which ../ occurs at the beginning of any filename.

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

Refgroups.google.com/g/golang-announce/c/MfiLYjG-RAwReflists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2MU47VKTNXX33ZDLTI2ORRUY3KLJKU6G/Reflists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HM7U5JNS5WU66Q3S26PFIU2ITB2ATTQ4/Refsecurity.gentoo.org/glsa/202208-02Refgroups.google.com/g/golang-announce/c/MfiLYjG-RAwReflists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/2MU47VKTNXX33ZDLTI2ORRUY3KLJKU6G/Reflists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/HM7U5JNS5WU66Q3S26PFIU2ITB2ATTQ4/Refsecurity.gentoo.org/glsa/202208-02

How CyberStrike helps

Frequently asked questions

What is CVE-2021-27919?

CVE-2021-27919 is a medium-severity vulnerability. It was published on March 11, 2021 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2021-27919?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2021-27919?

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-2021-27919?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-27919 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 MEDIUM CVEs from 2021

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999