Security Bulletin: A security vulnerability in NGINX ffects IBM Cloud Automation Manager

Security Bulletin

Summary

A security vulnerability in NGINX ffects IBM Cloud Automation Manager.

Vulnerability Details

CVEID: CVE-2021-3618
DESCRIPTION: Sendmail, vsftpd and NGINX could provide weaker than expected security, caused by an ALPACA (application layer protocol content confusion) attack, which exploits TLS servers implementing different protocols but using compatible certificates. By using man-in the-middle attack techniques, a remote attacker with access to victim's traffic at the TCP/IP layer could redirect traffic from one subdomain to another, resulting in a valid TLS session. The session breaks the authentication of TLS and the packages become vulnerable to cross-protocol attacks.
CVSS Base score: 7.4
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/207761 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N)

Affected Products and Versions

Affected Product(s)	Version(s)
IBM Cloud Automation Manager	4.2.0.1

Remediation/Fixes

Download IBM Cloud Automation Manager 4.2.0.1 iFix 4 from http://www.ibm.com/support/fixcentral/swg/selectFixes?product=ibm/WebSphere/IBM+Cloud+Private&release=All&platform=All&function=fixId&fixids=icp-cam-3.2.1-build600699&includeSupersedes=0

Follow the instructions in Readme link in http://www.ibm.com/support/fixcentral/swg/selectFixes?product=ibm/WebSphere/IBM+Cloud+Private&release=All&platform=All&function=fixId&fixids=icp-cam-3.2.1-build600699&includeSupersedes=0 to install the iFix 4 to your IBM Cloud Automation Manager 4.2.0.1.

Workarounds and Mitigations

None

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References

Complete CVSS v3 Guide
On-line Calculator v3

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Change History

15 Sep 2021: Initial Publication

*The CVSS Environment Score is customer environment specific and will ultimately impact the Overall CVSS Score. Customers can evaluate the impact of this vulnerability in their environments by accessing the links in the Reference section of this Security Bulletin.

Disclaimer

Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.

Document Location

Worldwide

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Tips

Security Bulletin: A security vulnerability in NGINX ffects IBM Cloud Automation Manager