SB2019051104 - UNIX symbolic link following in npm Harp
Published: May 11, 2019 Updated: May 14, 2019
Security Bulletin ID
SB2019051104
CSH Severity
Low
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Local access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 vulnerability.
1) UNIX symbolic link following (CVE-ID: CVE-2019-5438)
CWE-ID: CWE-61 - UNIX Symbolic Link (Symlink) Following
CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
The vulnerability allows a local user to gain access to sensitive data.
The vulnerability exists due to a symlink following issue when processing path traversal characters. A local user can create a specially crafted symbolic link to get access to files outside project directory.
Successful exploitation of this vulnerability allows to list any file in another folder of web root.
Remediation
Install update from vendor's website.