CVE-2018-20834
HIGH7.5EPSS 0.72%Arbitrary File Overwrite in tar
Published: 5/1/2019Modified: 4/28/2026
Description
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).
Affected packages (2)
- Debian/node-tarfrom 0, < 4.4.4+ds1-2
- npm/tar>= 3.0.0, < 4.4.2
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | HIGH7.5 | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N |
References (9)
- ADVISORYhttps://nvd.nist.gov/vuln/detail/CVE-2018-20834
- ADVISORYhttps://security-tracker.debian.org/tracker/CVE-2018-20834
- PATCHhttps://github.com/isaacs/node-tar
- WEBhttps://access.redhat.com/errata/RHSA-2019:1821
- WEBhttps://github.com/npm/node-tar/commit/7ecef07da6a9e72cc0c4d0c9c6a8e85b6b52395d
- WEBhttps://github.com/npm/node-tar/commit/b0c58433c22f5e7fe8b1c76373f27e3f81dcd4c8
- WEBhttps://github.com/npm/node-tar/commits/v2.2.2
- WEBhttps://github.com/npm/node-tar/compare/58a8d43...a5f7779
- WEBhttps://hackerone.com/reports/344595