CVE-2017-7559 Information

Description

In Undertow 2.x before 2.0.0.Alpha2 1.4.x before 1.4.17.Final and 1.3.x before 1.3.31.Final it was found that the fix for CVE-2017-2666 was incomplete and invalid characters are still allowed in the query string and path parameters. This could be exploited in conjunction with a proxy that also permitted the invalid characters but with a different interpretation to inject data into the HTTP response. By manipulating the HTTP response the attacker could poison a web-cache perform an XSS attack or obtain sensitive information from requests other than their own.

CVSS Vector

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

Reference

https://access.redhat.com/errata/RHSA-2017:3454 https://access.redhat.com/errata/RHSA-2017:3455 https://access.redhat.com/errata/RHSA-2017:3456 https://access.redhat.com/errata/RHSA-2017:3458 https://access.redhat.com/errata/RHSA-2018:0002 https://access.redhat.com/errata/RHSA-2018:0003 https://access.redhat.com/errata/RHSA-2018:0004 https://access.redhat.com/errata/RHSA-2018:0005 https://access.redhat.com/errata/RHSA-2018:1322 https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7559 https://issues.jboss.org/browse/UNDERTOW-1251

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