Vulnerability in Red Hat Apicast

CVE-2021-3523

A flaw was found in 3Scale APICast in versions prior to 2.11.0, where it incorrectly identified connections for reuse. This flaw allows an attacker to bypass security restrictions for an API request when hosting multiple APIs on the same IP address.

Published · last modified .

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.008 (56.5th percentile), scored .

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 57th percentile — 56.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2021-3523: held from 0.008 to 0.008.

EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: +0.000

Affected products

  • Red Hat Apicast
  • Apicast — versions 3scale-apicast versions prior to 2.11.0

Weakness classification (CWE)

References

Frequently asked questions

What is CVE-2021-3523?
CVE-2021-3523 is a high-severity vulnerability in Red Hat Apicast, classified under Improper Preservation of Permissions. CVSS score: 7.5/10. Published 2022-04-27.
How severe is CVE-2021-3523?
High severity. CVSS v3 base score is 7.5 out of 10.