CVE-2021-22053: Spring Cloud Netflix Hystrix Dashboard template resolution vulnerability

HIGH | NOVEMBER 17, 2021 | CVE-2021-22053

Description

Applications using both spring-cloud-netflix-hystrix-dashboard and spring-boot-starter-thymeleaf expose a way to execute code submitted within the request URI path during the resolution of view templates. When a request is made at /hystrix/monitor;[user-provided data], the path elements following hystrix/monitor are being evaluated as SpringEL expressions, which can lead to code execution.

Affected Spring Products and Versions

Spring Cloud Netflix
- 2.2.0.RELEASE to 2.2.9.RELEASE
- Older, unsupported versions are also affected

Mitigation

Users of affected versions should apply the following mitigation: Users should upgrade to 2.2.10.RELEASE+. No other steps are necessary. Releases that have fixed this issue include:

Spring Cloud Netflix
- 2.2.10.RELEASE+

Credit

This vulnerability was identified and responsibly reported by threedr3am of SecCoder Security Lab (threedr3am@foxmail.com).

History

2021-11-17: Initial vulnerability report published.

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