CVE-2018-20834

NONE EPSS 86.3%
Published Apr 30, 20197y ago · Modified Jun 17, 20262w ago
Find Similar
Published Apr 30, 2019 7y ago
Last Modified Jun 17, 2026 2w ago

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).

Threat Intelligence

EPSS Exploit Probability
86.3% percentile
Exploit & Patch Status
Public Exploit Known
Patch Available

Weaknesses 1

CWE-59

Affected Products 2

VendorProductVersionRange
isaacstar* <2.2.2
isaacstar*≥3.0.0  –  <4.4.2

References 7

  • access.redhat.com https://access.redhat.com/errata/RHSA-2019:1821
  • github.com https://github.com/npm/node-tar/commit/7ecef07da6a9e72cc0c4d0c9c6a8e85b6b52395d
  • github.com https://github.com/npm/node-tar/commit/b0c58433c22f5e7fe8b1c76373f27e3f81dcd4c8
    PatchThird Party Advisory
  • github.com https://github.com/npm/node-tar/commits/v2.2.2
  • github.com https://github.com/npm/node-tar/compare/58a8d43...a5f7779
    PatchThird Party Advisory
  • hackerone.com https://hackerone.com/reports/344595
    ExploitThird Party Advisory
  • nvd.nist.gov https://nvd.nist.gov/vuln/detail/CVE-2018-20834

Remediation

  • github.com https://github.com/npm/node-tar/commit/b0c58433c22f5e7fe8b1c76373f27e3f81dcd4c8
    PatchThird Party Advisory
  • github.com https://github.com/npm/node-tar/compare/58a8d43...a5f7779
    PatchThird Party Advisory