Directory Traversal Affecting npm package, versions <1:6.14.14-1.14.17.5.1.module+el8.4.0+20313+f90c2973
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Test your applications- Snyk ID SNYK-ORACLE8-NPM-2591015
- published 10 Apr 2022
- disclosed 3 Aug 2021
Introduced: 3 Aug 2021
CVE-2021-32804 Open this link in a new tabHow to fix?
Upgrade Oracle:8 npm to version 1:6.14.14-1.14.17.5.1.module+el8.4.0+20313+f90c2973 or higher.
This issue was patched in ELSA-2021-3666.
NVD Description
Note: Versions mentioned in the description apply only to the upstream npm package and not the npm package as distributed by Oracle.
See How to fix? for Oracle:8 relevant fixed versions and status.
The npm package "tar" (aka node-tar) before versions 6.1.1, 5.0.6, 4.4.14, and 3.3.2 has a arbitrary File Creation/Overwrite vulnerability due to insufficient absolute path sanitization. node-tar aims to prevent extraction of absolute file paths by turning absolute paths into relative paths when the preservePaths flag is not set to true. This is achieved by stripping the absolute path root from any absolute file paths contained in a tar file. For example /home/user/.bashrc would turn into home/user/.bashrc. This logic was insufficient when file paths contained repeated path roots such as ////home/user/.bashrc. node-tar would only strip a single path root from such paths. When given an absolute file path with repeating path roots, the resulting path (e.g. ///home/user/.bashrc) would still resolve to an absolute path, thus allowing arbitrary file creation and overwrite. This issue was addressed in releases 3.2.2, 4.4.14, 5.0.6 and 6.1.1. Users may work around this vulnerability without upgrading by creating a custom onentry method which sanitizes the entry.path or a filter method which removes entries with absolute paths. See referenced GitHub Advisory for details. Be aware of CVE-2021-32803 which fixes a similar bug in later versions of tar.
References
- https://linux.oracle.com/cve/CVE-2021-32804.html
- https://linux.oracle.com/errata/ELSA-2021-3623.html
- https://linux.oracle.com/errata/ELSA-2021-3666.html
- https://cert-portal.siemens.com/productcert/pdf/ssa-389290.pdf
- https://github.com/npm/node-tar/commit/1f036ca23f64a547bdd6c79c1a44bc62e8115da4
- https://github.com/npm/node-tar/security/advisories/GHSA-3jfq-g458-7qm9
- https://www.npmjs.com/advisories/1770
- https://www.npmjs.com/package/tar
- https://www.oracle.com/security-alerts/cpuoct2021.html