CVE-2018-20834

high

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).

References

https://nvd.nist.gov/vuln/detail/CVE-2018-20834

https://hackerone.com/reports/344595

https://github.com/npm/node-tar/compare/58a8d43...a5f7779

https://github.com/npm/node-tar/commits/v2.2.2

https://github.com/npm/node-tar/commit/b0c58433c22f5e7fe8b1c76373f27e3f81dcd4c8

https://github.com/npm/node-tar/commit/7ecef07da6a9e72cc0c4d0c9c6a8e85b6b52395d

https://access.redhat.com/errata/RHSA-2019:1821

Details

Source: Mitre, NVD

Published: 2019-04-30

Updated: 2019-09-04

Risk Information

CVSS v2

Base Score: 6.4

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:P/A:P

Severity: Medium

CVSS v3

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Severity: High