CVE-2018-20834

MITRE NVD CVE.ORG JSON API Print: PDF PDF

Summary

CVECVE-2018-20834
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2019-04-30 19:29:00 UTC
Updated2019-09-04 20:15:00 UTC
DescriptionA vulnerability was found in node-tar before version 4.4.2 (excluding version 2.2.2). An Arbitrary File Overwrite issue exists when extracting a tarball containing a hardlink to a file that already exists on the system, in conjunction with a later plain file with the same name as the hardlink. This plain file content replaces the existing file content. A patch has been applied to node-tar v2.2.2).

Risk And Classification

Problem Types: CWE-59

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Node-tar Project Node-tar All All All All
Application Node-tar Project Node-tar All All All All

References

ReferenceSourceLinkTags
Comparing 58a8d43...a5f7779 · npm/node-tar · GitHub MISC github.com Patch, Third Party Advisory
Bump fstream to fix hardlink overwriting vulnerability · npm/node-tar@7ecef07 · GitHub MISC github.com
Commits · npm/node-tar · GitHub MISC github.com
NVD - CVE-2018-20834 MISC nvd.nist.gov
Red Hat Customer Portal REDHAT access.redhat.com
HackerOne MISC hackerone.com Exploit, Third Party Advisory
unpack: only reuse file fs entries if nlink = 1 · npm/node-tar@b0c5843 · GitHub MISC github.com Patch, Third Party Advisory
CVE Program record CVE.ORG www.cve.org canonical

Legacy QID Mappings

  • 981797 Nodejs (npm) Security Update for tar (GHSA-j44m-qm6p-hp7m)

© CVE.report 2026

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report