CVE-2018-20834
HIGHnode-tar < 2.2.2 and 3.0.0-4.4.2 - Arbitrary File Overwrite via Hardlink Extraction
Title source: llmDescription
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).
References (7)
Core 7
Core References
Patch x_refsource_misc
https://github.com/npm/node-tar/commit/7ecef07da6a9e72cc0c4d0c9c6a8e85b6b52395d
Patch x_refsource_misc
https://github.com/npm/node-tar/commits/v2.2.2
Exploit, Third Party Advisory x_refsource_misc
https://hackerone.com/reports/344595
Patch, Third Party Advisory x_refsource_misc
https://github.com/npm/node-tar/commit/b0c58433c22f5e7fe8b1c76373f27e3f81dcd4c8
Patch, Third Party Advisory x_refsource_misc
https://github.com/npm/node-tar/compare/58a8d43...a5f7779
Vendor Advisory vendor-advisory
x_refsource_redhat
https://access.redhat.com/errata/RHSA-2019:1821
Various Sources x_refsource_misc
https://nvd.nist.gov/vuln/detail/CVE-2018-20834
Scores
CVSS v3
7.5
EPSS
0.0314
EPSS Percentile
86.2%
Attack Vector
NETWORK
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Details
CWE
CWE-59
Status
published
Products (2)
isaacs/tar
< 2.2.2
npm/tar
3.0.0 - 4.4.2npm
Published
Apr 30, 2019
Tracked Since
Feb 18, 2026