Arbitrary File Overwrite in tar
Versions of `tar` prior to 4.4.2 for 4.x and 2.2.2 for 2.x are vulnerable to Arbitrary File Overwrite. Extracting tarballs containing a hardlink to a file that already exists in the system, and a file that matches the hardlink will overwrite the system's file with the contents of the extracted file. ## Recommendation For tar 4.x, upgrade to version 4.4.2 or later. For tar 2.x, upgrade to version 2.2.2 or later.
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describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2018-20834US | high7.5 | — | ||
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… | ||||
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references
External citations — patches, advisories, analysis.
- https://access.redhat.com/errata/RHSA-2019:1821WEB
- https://github.com/isaacs/node-tarPACKAGE
- https://github.com/npm/node-tar/commit/7ecef07da6a9e72cc0c4d0c9c6a8e85b6b52395dWEB
- https://github.com/npm/node-tar/commit/b0c58433c22f5e7fe8b1c76373f27e3f81dcd4c8WEB
- https://github.com/npm/node-tar/commits/v2.2.2WEB
- https://github.com/npm/node-tar/compare/58a8d43...a5f7779WEB
- https://hackerone.com/reports/344595WEB
- https://nvd.nist.gov/vuln/detail/CVE-2018-20834ADVISORY
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