VulnerabilityModified
CVE-2018-20834
A vulnerability was found in node-tar before version 4.4.2 (excluding version 2.2.2).
HIGH 7.5EPSS 3.15%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (3.15%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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).
- CVSS 3.0
- 7.5 HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 3.15% probability · 87th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-59
- Affected
- isaacs/tar
- Source
- cve@mitre.org
References
- https://access.redhat.com/errata/RHSA-2019:1821
- https://github.com/npm/node-tar/commit/7ecef07da6a9e72cc0c4d0c9c6a8e85b6b52395d
- https://github.com/npm/node-tar/commit/b0c58433c22f5e7fe8b1c76373f27e3f81dcd4c8Patch, Third Party Advisory
- https://github.com/npm/node-tar/commits/v2.2.2
- https://github.com/npm/node-tar/compare/58a8d43...a5f7779Patch, Third Party Advisory
- https://hackerone.com/reports/344595Exploit, Third Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-20834
- https://access.redhat.com/errata/RHSA-2019:1821
- https://github.com/npm/node-tar/commit/7ecef07da6a9e72cc0c4d0c9c6a8e85b6b52395d
- https://github.com/npm/node-tar/commit/b0c58433c22f5e7fe8b1c76373f27e3f81dcd4c8Patch, Third Party Advisory
- https://github.com/npm/node-tar/commits/v2.2.2
- https://github.com/npm/node-tar/compare/58a8d43...a5f7779Patch, Third Party Advisory
- https://hackerone.com/reports/344595Exploit, Third Party Advisory
- https://nvd.nist.gov/vuln/detail/CVE-2018-20834
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.