CVE-2018-20834
Arbitrary File Overwrite in tar
7.5
HIGH
CVSS 3.1
EPSS 0.72%
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).
How to fix CVE-2018-20834
To remediate CVE-2018-20834, upgrade the affected package to a fixed version below.
- —upgrade to 4.4.4+ds1-2 or later
- —upgrade to 4.4.2 or later
Is CVE-2018-20834 being exploited?
Low — EPSS is 0.7%, meaning exploitation activity has not been observed at scale.
Affected packages (2)
- from 0, < 4.4.4+ds1-2
- >= 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 |