Security Bulletin: Multiple vulnerabilities in IBM HTTP Server used by WebSphere Application Server

Summary

There are multiple vulnerabilities in the IBM HTTP Server used by WebSphere Application Server. This has been addressed.

Vulnerability Details

CVEID:CVE-2020-13938
**DESCRIPTION:**Apache HTTP Server is vulnerable to a denial of service, caused by the improper handling of insufficient privileges. A local attacker could exploit this vulnerability to stop httpd on Windows, resulting in a denial of service.
CVSS Base score: 6.2
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/203460 for the current score.
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)

CVEID:CVE-2021-30641
**DESCRIPTION:**Apache HTTP Server could provide weaker than expected security, caused by unexpected URL matching behavior with MergeSlashes OFF. An attacker could exploit this vulnerability to match URLs from all sites in the same domain and launch further attacks on the system.
CVSS Base score: 5.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/203459 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N)

Affected Products and Versions

This vulnerability affects the following version and release of IBM HTTP Server (powered by Apache) component in all editions of WebSphere Application Server and bundling products.

Remediation/Fixes

For IBM HTTP Server used by WebSphere Application Server:

For V9.0.0.0 through 9.0.5.7:
· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PH35771
--OR–
· Apply Fix Pack 9.0.5.8 or later (targeted availability 2Q2021).

For V8.5.0.0 through 8.5.5.19:
· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PH35771
--OR–
· Apply Fix Pack 8.5.5.20 or later (targeted availability 3Q2021).

For V8.0.0.0 through 8.0.0.15:
· Upgrade to 8.0.0.15 and then apply Interim Fix PH35771

For V7.0.0.0 through 7.0.0.45:
· Upgrade to 7.0.0.45 and then apply Interim Fix PH35771

Additional interim fixes may be available and linked off the interim fix download page.

_IBM HTTP Server V7.0 and V8.0 are no longer in full support; IBM recommends upgrading to a fixed, supported version/release/platform of the product. _

Important Note

IBM strongly suggests that all System z customers be subscribed to the System z Security Portal to receive the latest critical System z security and
integrity service. If you are not subscribed, see the instructions on the System z Security web site. Security and integrity APARs and associated fixes will
be posted to this portal. IBM suggests reviewing the CVSS scores and applying all security or integrity fixes as soon as possible to minimize any potential
risk.

Workarounds and Mitigations

None