isaacs/node-tar · Security
Arbitrary File Overwrite in tar
- GHSA ID
- GHSA-j44m-qm6p-hp7m
- CVE ID
- CVE-2018-20834
- Severity
- high
- Published
- Updated
- CVSS
- 7.5 · CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- CVSS v3
- 7.5 · CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Description
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.
CWEs
- CWE-59 · Improper Link Resolution Before File Access ('Link Following')
References
- https://nvd.nist.gov/vuln/detail/CVE-2018-20834 ↗
- https://github.com/npm/node-tar/commit/b0c58433c22f5e7fe8b1c76373f27e3f81dcd4c8 ↗
- https://hackerone.com/reports/344595 ↗
- https://github.com/npm/node-tar/compare/58a8d43...a5f7779 ↗
- https://github.com/npm/node-tar/commit/7ecef07da6a9e72cc0c4d0c9c6a8e85b6b52395d ↗
- https://access.redhat.com/errata/RHSA-2019:1821 ↗
- https://github.com/npm/node-tar/commits/v2.2.2 ↗
- https://github.com/advisories/GHSA-j44m-qm6p-hp7m ↗