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CVE-2017-11173

Published: 13 July 2017

Missing anchor in generated regex for rack-cors before 0.4.1 allows a malicious third-party site to perform CORS requests. If the configuration were intended to allow only the trusted example.com domain name and not the malicious example.net domain name, then example.com.example.net (as well as example.com-example.net) would be inadvertently allowed.

Priority

Medium

Cvss 3 Severity Score

8.8

Score breakdown

Status

Package Release Status
ruby-rack-cors
Launchpad, Ubuntu, Debian
artful Not vulnerable
(0.4.1-1)
bionic Not vulnerable
(0.4.1-1)
cosmic Not vulnerable
(0.4.1-1)
disco Not vulnerable
(0.4.1-1)
trusty Does not exist
(trusty was needs-triage)
upstream
Released (0.4.1-1)
xenial
Released (0.4.0-1+deb9u1build0.16.04.1)
yakkety Ignored
(end of life)
zesty
Released (0.4.0-1+deb9u1build0.17.04.1)
Patches:
upstream: https://github.com/cyu/rack-cors/commit/42ebe6caa8e85ffa9c8a171bda668ba1acc7a5e6

Severity score breakdown

Parameter Value
Base score 8.8
Attack vector Network
Attack complexity Low
Privileges required None
User interaction Required
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H