Security Bulletin: Multiple vulnerabilities in IBM HTTP Server used by IBM WebSphere Application Server (CVE-2022-22719, CVE-2022-22720, CVE-2022-22721)

Security Bulletin

Summary

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

Vulnerability Details

CVEID: CVE-2022-22719
DESCRIPTION: Apache HTTP Server is vulnerable to a denial of service. By using a specially crafted request body to read a random memory area, a remote attacker could exploit this vulnerability to cause the process to crash.
CVSS Base score: 5.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/221667 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L)

CVEID: CVE-2022-22721
DESCRIPTION: Apache HTTP Server is vulnerable to a buffer overflow, caused by an integer overflow. By sending an overly large LimitXMLRequestBody, a remote attacker could overflow a buffer and execute arbitrary code on the system or cause the application to crash.
CVSS Base score: 7.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/221666 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)

CVEID: CVE-2022-22720
DESCRIPTION: Apache HTTP Server is vulnerable to HTTP request smuggling, caused by the failure to close inbound connection when errors are encountered discarding the request body. By sending a specially-crafted HTTP(S) transfer-encoding request header, an attacker could exploit this vulnerability to poison the web cache, bypass web application firewall protection, and conduct XSS attacks.
CVSS Base score: 7.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/221668 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)

Affected Products and Versions

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

Affected Product(s)	Version(s)
IBM HTTP Server	9.0
IBM HTTP Server	8.5
IBM HTTP Server	8.0
IBM HTTP Server	7.0

Remediation/Fixes

IBM strongly recommends addressing the vulnerability now by applying a currently available interim fix or fix pack that contains APAR PH44829.

For IBM HTTP Server used by IBM WebSphere Application Server:

For V9.0.0.0 through 9.0.5.11:
· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PH44829
--OR--
· Apply Fix Pack 9.0.5.12 or later (targeted availability 2Q2022).

For V8.5.0.0 through 8.5.5.21:
· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PH44829
--OR--
· Apply Fix Pack 8.5.5.22 or later (targeted availability 3Q2022).

For V8.0.0.0 through 8.0.0.15:
· Upgrade to 8.0.0.15 and then apply Interim Fix PH44829

For V7.0.0.0 through 7.0.0.45:
· Upgrade to 7.0.0.45 and then apply Interim Fix PH44829

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

Mitigations for this issue are available. Please refer to the Interim Fix PH44829 for details.

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References

Complete CVSS v3 Guide
On-line Calculator v3

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Change History

22 Mar 2022: 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: Multiple vulnerabilities in IBM HTTP Server used by IBM WebSphere Application Server (CVE-2022-22719, CVE-2022-22720, CVE-2022-22721)