Auth bypass in VMware Spring Cloud Netflix Zuul
CVE-2021-22113
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.
Vulnerability class: Broken Access Control
EPSS: 0.008 (53.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.
Affected products
- Vmware Spring_cloud_netflix_zuul
- N/a Spring Cloud Netflix Zuul — versions 2.2.6 and below
Weakness classification (CWE)
References
- security@vmware.com (x_refsource_CONFIRM, Vendor Advisory)
Frequently asked questions
- What is CVE-2021-22113?
- CVE-2021-22113 is a medium-severity vulnerability in VMware Spring Cloud Netflix Zuul, classified under Incorrect Authorization. CVSS score: 5.3/10. Published 2021-02-23.
- How severe is CVE-2021-22113?
- Medium severity. CVSS v3 base score is 5.3 out of 10.