Vulnerability · Published Feb 23, 2021 · Assigned by vmware

CVE-2021-22113

Medium 5.3

In plain English

A medium-severity security flaw in Spring Cloud Netflix Zuul. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.9% (higher than 58% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS NVD)5.3Medium

Exploit odds (30 days)0.9%top 41.6% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

Applications using the “Sensitive Headers” functionality in Spring Cloud Netflix Zuul 2.2.6.RELEASE and below may be vulnerable to bypassing the “Sensitive Headers” restriction when executing requests with specially constructed URLs. Applications that use Spring Security's StrictHttpFirewall (enabled by default for all URLs) are not affected by the vulnerability, as they reject requests that allow bypassing.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
Maven	org.springframework.cloud:spring-cloud-netflix-zuul	2.2.7	GHSA-vwpg-f6gw-rjvf

Affected products (as reported)

Vendor	Product	Versions
n/a	Spring Cloud Netflix Zuul	2.2.6 and below

References

https://tanzu.vmware.com/security/cve-2021-22113 x_refsource_CONFIRM