CVE-2018-16471 Information

Description

There is a possible XSS vulnerability in Rack before 2.0.6 and 1.6.11. Carefully crafted requests can impact the data returned by the scheme method on Rack::Request. Applications that expect the scheme to be limited to ‘http’ or ‘https’ and do not escape the return value could be vulnerable to an XSS attack. Note that applications using the normal escaping mechanisms provided by Rails may not impacted but applications that bypass the escaping mechanisms or do not use them may be vulnerable.

CVSS Vector

CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Reference

http://lists.opensuse.org/opensuse-security-announce/2019-06/msg00032.html http://lists.opensuse.org/opensuse-security-announce/2020-02/msg00016.html https://groups.google.com/forum/!topic/rubyonrails-security/GKsAFT924Ag https://lists.debian.org/debian-lts-announce/2018/11/msg00022.html https://usn.ubuntu.com/4089-1/

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

REQUIRED

Confidentiality Impact

CHANGED

Integrity Impact

LOW

Availability Impact

LOW

Base Score

NONE

Base Severity

6.1