Description

In Spring Security versions 5.5.6 and 5.6.3 and older unsupported versions, RegexRequestMatcher can easily be misconfigured to be bypassed on some servlet containers.

Applications using RegexRequestMatcher with `.` in the regular expression are possibly vulnerable to an authorization bypass.

Affected Spring Products and Versions

Spring Security
- 5.5.x prior to 5.5.7
- 5.6.x prior to 5.6.4
- Earlier unsupported versions

Mitigation

Users should update to a version that includes fixes. 5.5.x users should upgrade to 5.5.7 or greater. 5.6.x users should upgrade to 5.6.4 or greater. Releases that have fixed this issue include:

Spring Security
- 5.5.7+
- 5.6.4+
- 5.7+

Credit

This vulnerability was discovered and responsibly reported by Hiroki Nishino, Toshiki Sasazaki, Yoshinori Hayashi, and Jonghwan Kim from LINE Corporation.

History

2022-05-16: Initial vulnerability report published.

Reporting a vulnerability

The VMware Security Response team provides a single point of contact for the reporting of security vulnerabilities in VMware Tanzu products and coordinates the process of investigating any reported vulnerabilities.

To report a security vulnerability in a VMware service or product please refer to the VMware Security Response Policy.