Vulnerability in Isaacs Tar

CVE-2018-20834

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…

EPSS: 0.031 (86.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2018-20834?
CVE-2018-20834 is a high-severity vulnerability in Isaacs Tar, classified under Improper Link Resolution Before File Access. CVSS score: 7.5/10. Published 2019-04-30.
How severe is CVE-2018-20834?
High severity. CVSS v3 base score is 7.5 out of 10.
Is CVE-2018-20834 known to be exploited?
5 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.