Security Bulletin: Multiple vulnerabilities in the IBM HTTP Server used in IBM WebSphere Application Server in IBM Cloud (CVE-2019-0211 CVE-2019-0220)

Summary

There are multiple vulnerabilities in the IBM HTTP Server used by WebSphere Application Server.

Apache HTTP Server could provide weaker than expected security, caused by URL normalization inconsistencies. Apache HTTP Server could allow a local authenticated attacker to gain elevated privileges on the system.

Vulnerability Details

CVEID: CVE-2019-0220 DESCRIPTION: Apache HTTP Server could provide weaker than expected security, caused by URL normalization inconsistencies. A remote attacker could exploit this vulnerability to launch further attacks on the system.
CVSS Base Score: 5.3
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/158948&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)

CVEID: CVE-2019-0211 DESCRIPTION: Apache HTTP Server could allow a local authenticated attacker to gain elevated privileges on the system, caused by the execution of code in less-privileged child processes or threads from modules’ scripts. By manipulating the scoreboard, an attacker could exploit this vulnerability to execute arbitrary code on the system with root privileges.
CVSS Base Score: 8.2
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/158929&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:H)

Affected Products and Versions

These vulnerabilities affect the following versions and releases of IBM HTTP Server (powered by Apache) component in all editions of WebSphere Application Server and bundling products.

• Version 9.0
• Version 8.5

Remediation/Fixes

To patch an existing service instance, refer to the IBM HTTP Server bulletin listed below

• Multiple vulnerabilities in IBM HTTP Server (CVE-2019-0211 CVE-2019-0220)

Please see Updating your environment in the KnowlegeCenter for information on applying service.

Alternatively, delete the vulnerable service instance and create a new instance.

Monitor IBM Cloud Status for Future Security Bulletins

Monitor the security notifications on the IBM Cloud Status page to be advised of future security bulletins.

References

Complete CVSS v3 Guide
On-line Calculator v3

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Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

04 June 2019 - Original document published

*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.

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