CVE-2018-20834

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 v3.0 7.5 HIGH
CVSS v2.0 6.4 MEDIUM

7.5^/10

CVSS v3.0 : HIGH

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

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

6.4^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 10.0 / Impact : 4.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact NONE

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

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

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Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:node-tar_project:node-tar::::::::
	cpe:2.3:a:node-tar_project:node-tar::::::::

Information

Published : 2019-04-30 12:29

Updated : 2019-09-04 13:15

NVD link : CVE-2018-20834

Mitre link : CVE-2018-20834

JSON object : View

CWE

CWE-59

Improper Link Resolution Before File Access ('Link Following')

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Products Affected

node-tar_project

node-tar

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