Executive Summary

Informations
Name CVE-2018-20834 First vendor Publication 2019-04-30
Vendor Cve Last vendor Modification 2019-09-04

Security-Database Scoring CVSS v3

Cvss vector : CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Overall CVSS Score 7.5
Base Score 7.5 Environmental Score 7.5
impact SubScore 3.6 Temporal Score 7.5
Exploitabality Sub Score 3.9
 
Attack Vector Network Attack Complexity Low
Privileges Required None User Interaction None
Scope Unchanged Confidentiality Impact None
Integrity Impact High Availability Impact None
Calculate full CVSS 3.0 Vectors scores

Security-Database Scoring CVSS v2

Cvss vector : (AV:N/AC:L/Au:N/C:N/I:P/A:P)
Cvss Base Score 6.4 Attack Range Network
Cvss Impact Score 4.9 Attack Complexity Low
Cvss Expoit Score 10 Authentication None Required
Calculate full CVSS 2.0 Vectors scores

Detail

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).

Original Source

Url : http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-20834

CWE : Common Weakness Enumeration

% Id Name
100 % CWE-59 Improper Link Resolution Before File Access ('Link Following')

CPE : Common Platform Enumeration

TypeDescriptionCount
Application 1

Sources (Detail)

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

Alert History

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Date Informations
2021-05-04 13:13:52
  • Multiple Updates
2021-04-22 02:28:47
  • Multiple Updates
2020-05-23 02:15:21
  • Multiple Updates
2020-05-23 01:12:49
  • Multiple Updates
2019-09-05 05:19:21
  • Multiple Updates
2019-07-22 21:19:33
  • Multiple Updates
2019-05-23 21:19:20
  • Multiple Updates
2019-05-03 21:19:25
  • Multiple Updates
2019-05-01 00:19:04
  • First insertion