CVEvulnerability
CVE-2018-20834
7.5 HIGH
Official page ↗
- Status
- Modified
- Published
- 2019-04-30
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.0 ([email protected])
- 7.5 HIGH — CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- CVSS 2.0 ([email protected])
- 6.4 MEDIUM — AV:N/AC:L/Au:N/C:N/I:P/A:P
- Weaknesses
- CWE-59
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 configurations
• isaacs tar (< 2.2.2)
• isaacs tar (>= 3.0.0 < 4.4.2)
Related
Weakness · CWE (1)
- CWE-59 Improper Link Resolution Before File Access weakness
References
- https://access.redhat.com/errata/RHSA-2019:1821 access.redhat.com
- https://github.com/npm/node-tar/commit/7ecef07da6a9e72cc0c4d0c9c6a8e85b6b52395d github.com
- https://github.com/npm/node-tar/commit/b0c58433c22f5e7fe8b1c76373f27e3f81dcd4c8 Patch, Third Party Advisory
- https://github.com/npm/node-tar/commits/v2.2.2 github.com
- https://github.com/npm/node-tar/compare/58a8d43...a5f7779 Patch, Third Party Advisory
- https://hackerone.com/reports/344595 Exploit, Third Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-20834 nvd.nist.gov
- https://access.redhat.com/errata/RHSA-2019:1821 access.redhat.com
- https://github.com/npm/node-tar/commit/7ecef07da6a9e72cc0c4d0c9c6a8e85b6b52395d github.com
- https://github.com/npm/node-tar/commit/b0c58433c22f5e7fe8b1c76373f27e3f81dcd4c8 Patch, Third Party Advisory
- https://github.com/npm/node-tar/commits/v2.2.2 github.com
- https://github.com/npm/node-tar/compare/58a8d43...a5f7779 Patch, Third Party Advisory
- https://hackerone.com/reports/344595 Exploit, Third Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-20834 nvd.nist.gov