SB2019111438 - Path traversal in Rack CORS Middleware gem for Ruby
Published: November 14, 2019 Updated: February 10, 2020
Security Bulletin ID
SB2019111438
Severity
Medium
Patch available
YES
Number of vulnerabilities
1
Exploitation vector
Remote access
Highest impact
Information disclosure
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 1 security vulnerability.
1) Path traversal (CVE-ID: CVE-2019-18978)
The vulnerability allows a remote attacker to perform directory traversal attacks.
The vulnerability exists due to resource matching does not ensure that pathnames are in a canonical format when processing directory traversal sequences. A remote attacker can send a specially crafted HTTP request and read arbitrary files on the system.
Remediation
Install update from vendor's website.