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Vulnerability Details : CVE-2019-18978

An issue was discovered in the rack-cors (aka Rack CORS Middleware) gem before 1.0.4 for Ruby. It allows ../ directory traversal to access private resources because resource matching does not ensure that pathnames are in a canonical format.
Publish Date : 2019-11-14 Last Update Date : 2021-05-21
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- CVSS Scores & Vulnerability Types

CVSS Score
5.0
Confidentiality Impact Partial (There is considerable informational disclosure.)
Integrity Impact None (There is no impact to the integrity of the system)
Availability Impact None (There is no impact to the availability of the system.)
Access Complexity Low (Specialized access conditions or extenuating circumstances do not exist. Very little knowledge or skill is required to exploit. )
Authentication Not required (Authentication is not required to exploit the vulnerability.)
Gained Access None
Vulnerability Type(s) Directory traversal
CWE ID 22

- Products Affected By CVE-2019-18978

# Product Type Vendor Product Version Update Edition Language
1 OS Canonical Ubuntu Linux 16.04 * * * Version Details Vulnerabilities
2 OS Debian Debian Linux 8.0 * * * Version Details Vulnerabilities
3 OS Debian Debian Linux 9.0 * * * Version Details Vulnerabilities
4 OS Debian Debian Linux 10.0 * * * Version Details Vulnerabilities
5 Application Rack-cors Project Rack-cors * * * * Version Details Vulnerabilities

- Number Of Affected Versions By Product

Vendor Product Vulnerable Versions
Canonical Ubuntu Linux 1
Debian Debian Linux 3
Rack-cors Project Rack-cors 1

- References For CVE-2019-18978

https://www.debian.org/security/2021/dsa-4918
DEBIAN DSA-4918
https://usn.ubuntu.com/4571-1/
UBUNTU USN-4571-1
https://github.com/cyu/rack-cors/commit/e4d4fc362a4315808927011cbe5afcfe5486f17d
https://lists.debian.org/debian-lts-announce/2020/10/msg00000.html
MLIST [debian-lts-announce] 20201001 [SECURITY] [DLA 2389-1] ruby-rack-cors security update
https://github.com/cyu/rack-cors/compare/v1.0.3...v1.0.4
https://lists.debian.org/debian-lts-announce/2020/02/msg00004.html
MLIST [debian-lts-announce] 20200206 [SECURITY] [DLA 2096-1] ruby-rack-cors security update

- Metasploit Modules Related To CVE-2019-18978

There are not any metasploit modules related to this CVE entry (Please visit www.metasploit.com for more information)


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