YAML payloads to cause the kube-apiserver to consume excessive CPU cycles while parsing YAML (CVE-2019-11254)

Brocade Fabric OS

2 more products

22717

07 November 2023

07 November 2023

CLOSED

MEDIUM

6.5 MEDIUM - Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVE-2019-11254

Brocade Security Advisory ID

BSA-2022-2050

Component

Kubernetes API Server

 

 

Summary

The Kubernetes API Server component in versions 1.1-1.14, and versions prior to 1.15.10, 1.16.7 and 1.17.3 allows an authorized user who sends malicious YAML payloads to cause the kube-apiserver to consume excessive CPU cycles while parsing YAML.

Products Affected

  • The underlyaing OS used by Brocade ASCG OVA versions before v3.0

Products Confirmed Not Affected

  • Brocade SANNav
  • Brocade Fabric OS

Solution

Brocade has released security updates that address the vulnerabilities described in this advisory. Brocade  Customers should obtain the security updates through their usual update channels.

Credit

The issue was found during internal penetration testing.

Revision History

Version

Change

Date

1.0

Initial Publication

 November 7, 2023

 

Disclaimer

THIS DOCUMENT IS PROVIDED ON AN AS-IS BASIS SOLELY FOR INFORMATIONAL PURPOSES AND DOES NOT IMPLY ANY KIND OF GUARANTY OR WARRANTY, INCLUDING THE WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. YOUR USE OF THE INFORMATION CONTAINED HEREIN IS AT YOUR OWN RISK. ALL INFORMATION PROVIDED HEREIN IS BASED ON BROCADE'S CURRENT KNOWLEDGE AND UNDERSTANDING OF THE VULNERABILITY AND IMPACT TO BROCADE HARDWARE AND SOFTWARE PRODUCTS. BROCADE RESERVES THE RIGHT TO CHANGE OR UPDATE THIS DOCUMENT AT ANY TIME.