CVE-2018-20834 – nodejs-tar: Arbitrary file overwrites when extracting tarballs containing a hard-link

https://notcve.org/view.php?id=CVE-2018-20834

30 Apr 2019 — A 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). Se detecto una vulnerabilidad en node-tar en versiones anteriores a la 4.4.2 (excluyendo la versión 2.2.2). • https://github.com/ossf-cve-benchmark/CVE-2018-20834 • CWE-59: Improper Link Resolution Before File Access ('Link Following') •