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.

CVSS v3.0 5.3 MEDIUM
CVSS v2.0 5.0 MEDIUM

5.3^/10

CVSS v3.0 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 1.4

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact NONE

Scope UNCHANGED

5.0^/10

CVSS v2.0 : MEDIUM

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

Exploitability : 10.0 / Impact : 2.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact NONE

References

Link	Resource
https://github.com/cyu/rack-cors/compare/v1.0.3...v1.0.4	Patch Third Party Advisory
https://github.com/cyu/rack-cors/commit/e4d4fc362a4315808927011cbe5afcfe5486f17d	Patch Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/02/msg00004.html	Mailing List Third Party Advisory
https://lists.debian.org/debian-lts-announce/2020/10/msg00000.html	Mailing List Third Party Advisory
https://usn.ubuntu.com/4571-1/	Third Party Advisory
https://www.debian.org/security/2021/dsa-4918	Third Party Advisory

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Configurations

Configuration 1 (hide)

cpe:2.3:a:rack-cors_project:rack-cors:*:*:*:*:*:ruby:*:*

Configuration 2 (hide)

OR	cpe:2.3:o:debian:debian_linux:8.0:::::::*
	cpe:2.3:o:debian:debian_linux:9.0:::::::*
	cpe:2.3:o:debian:debian_linux:10.0:::::::*

Configuration 3 (hide)

cpe:2.3:o:canonical:ubuntu_linux:16.04:*:*:*:esm:*:*:*

Information

Published : 2019-11-14 13:15

Updated : 2021-05-21 09:47

NVD link : CVE-2019-18978

Mitre link : CVE-2019-18978

JSON object : View

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

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Products Affected

debian

debian_linux

canonical

ubuntu_linux

rack-cors_project

rack-cors

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