Vulnerability   
Search   
    Search 324607 CVE descriptions
and 145615 test descriptions,
access 10,000+ cross references.
Tests   CVE   All  

CVE ID:CVE-2021-37712
Description:The npm package "tar" (aka node-tar) before versions 4.4.18, 5.0.10, and 6.1.9 has an arbitrary file creation/overwrite and arbitrary code execution vulnerability. node-tar aims to guarantee that any file whose location would be modified by a symbolic link is not extracted. This is, in part, achieved by ensuring that extracted directories are not symlinks. Additionally, in order to prevent unnecessary stat calls to determine whether a given path is a directory, paths are cached when directories are created. This logic was insufficient when extracting tar files that contained both a directory and a symlink with names containing unicode values that normalized to the same value. Additionally, on Windows systems, long path portions would resolve to the same file system entities as their 8.3 "short path" counterparts. A specially crafted tar archive could thus include a directory with one form of the path, followed by a symbolic link with a different string that resolves to the same file system entity, followed by a file using the first form. By first creating a directory, and then replacing that directory with a symlink that had a different apparent name that resolved to the same entry in the filesystem, it was thus possible to bypass node-tar symlink checks on directories, essentially allowing an untrusted tar file to symlink into an arbitrary location and subsequently extracting arbitrary files into that location, thus allowing arbitrary file creation and overwrite. These issues were addressed in releases 4.4.18, 5.0.10 and 6.1.9. The v3 branch of node-tar has been deprecated and did not receive patches for these issues. If you are still using a v3 release we recommend you update to a more recent version of node-tar. If this is not possible, a workaround is available in the referenced GHSA- qq89-hq3f-393p.
Test IDs: 1.3.6.1.4.1.25623.1.0.893237  
Cross References: Common Vulnerability Exposure (CVE) ID: CVE-2021-37712
https://github.com/npm/node-tar/security/advisories/GHSA-qq89-hq3f-393p
Debian Security Information: DSA-5008 (Google Search)
https://www.debian.org/security/2021/dsa-5008
https://www.npmjs.com/package/tar
https://www.npmjs.com/package/tar
https://www.oracle.com/security-alerts/cpuoct2021.html
https://www.oracle.com/security-alerts/cpuoct2021.html
https://lists.debian.org/debian-lts-announce/2022/12/msg00023.html




© 1998-2025 E-Soft Inc. All rights reserved.