Security Bulletin
Summary
There are multiple vulnerabilities in the IBM HTTP Server, which is used by IBM WebSphere Application Server, due to the included Apache HTTP Server.
Vulnerability Details
CVEID: CVE-2024-38472
DESCRIPTION: Apache HTTP Server is vulnerable to server-side request forgery, caused by improper validation of WIndows UNC. By sending a specially crafted request, an attacker could exploit this vulnerability to leak NTML hashes to a malicious server.
CVSS Base score: 5.9
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/296127 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N)
CVEID: CVE-2024-38473
DESCRIPTION: Apache HTTP Server could allow a remote attacker to bypass security restrictions, caused by an encoding flaw in mod_proxy. By sending specially crafted requests with incorrect encoding an attacker could exploit this vulnerability to bypass authentication validation.
CVSS Base score: 5.3
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/296126 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)
CVEID: CVE-2024-38474
DESCRIPTION: Apache HTTP Server could allow a remote attacker to execute arbitrary code on the system, caused by a substitution encoding issue in mod_rewrite. By sending a specially crafted request, an attacker could exploit this vulnerability to execute scripts in directories permitted by the configuration.
CVSS Base score: 8.2
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/296125 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N)
CVEID: CVE-2024-38475
DESCRIPTION: Apache HTTP Server could allow a remote attacker to execute arbitrary code on the system, caused by improper escaping of output in mod_rewrite. By sending a specially crafted request, an attacker could exploit this vulnerability to map URLs to filesystem locations permitted to be served by the server but are not intentionally or directly reachable by any URL, resulting in code execution.
CVSS Base score: 8.2
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/296124 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N)
CVEID: CVE-2024-38476
DESCRIPTION: Apache HTTP Server allow a remote attacker to obtain sensitive information, caused by improper input validation by the backend applications response headers. By sending a specially crafted request, an attacker could exploit this vulnerability to obtain sensitive information, perform server-side request forgery attack or local script execution.
CVSS Base score: 5.9
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/296123 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N)
CVEID: CVE-2024-38477
DESCRIPTION: Apache HTTP Server is vulnerable to a denial of service, caused by a NULL pointer dereference flaw in mod_proxy. By sending a specially crafted request, a remote attacker could exploit this vulnerability to cause a denial of service condition.
CVSS Base score: 7.5
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/296122 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
CVEID: CVE-2024-39573
DESCRIPTION: Apache HTTP Server is vulnerable to server-side request forgery, caused by a flaw in the mod_rewrite. By sending a specially crafted request, an attacker could exploit this vulnerability to cause unsafe RewriteRules to unexpectedly setup URL's to be handled by mod_proxy.
CVSS Base score: 5.9
CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/296120 for the current score.
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N)
Affected Products and Versions
| Affected Product(s) | Version(s) |
| IBM HTTP Server | 8.5 |
| IBM HTTP Server | 9.0 |
Remediation/Fixes
IBM strongly recommends addressing the vulnerability now by applying a currently available interim fix or fix pack that contains APAR PH61893.
For IBM HTTP Server used by IBM WebSphere Application Server:
For V9.0.0.0 through 9.0.5.20:
· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PH61893
--OR--
· Apply Fix Pack 9.0.5.21 or later (targeted availability 3Q2024).
For V8.5.0.0 through 8.5.5.26:
· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PH61893
--OR--
· Apply Fix Pack 8.5.5.27 or later (targeted availability 1Q2025).
Additional interim fixes may be available and linked off the interim fix download page.
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
Get Notified about Future Security Bulletins
References
Acknowledgement
Change History
09 Jul 2024: Initial Publication
29 Jul 2024: Updated v8.5 fix pack range and added interim fix.
*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
According to the Forum of Incident Response and Security Teams (FIRST), the Common Vulnerability Scoring System (CVSS) is an "industry open standard designed to convey vulnerability severity and help to determine urgency and priority of response." IBM PROVIDES THE CVSS SCORES ""AS IS"" WITHOUT WARRANTY OF ANY KIND, INCLUDING THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. CUSTOMERS ARE RESPONSIBLE FOR ASSESSING THE IMPACT OF ANY ACTUAL OR POTENTIAL SECURITY VULNERABILITY. In addition to other efforts to address potential vulnerabilities, IBM periodically updates the record of components contained in our product offerings. As part of that effort, if IBM identifies previously unidentified packages in a product/service inventory, we address relevant vulnerabilities regardless of CVE date. Inclusion of an older CVEID does not demonstrate that the referenced product has been used by IBM since that date, nor that IBM was aware of a vulnerability as of that date. We are making clients aware of relevant vulnerabilities as we become aware of them. "Affected Products and Versions" referenced in IBM Security Bulletins are intended to be only products and versions that are supported by IBM and have not passed their end-of-support or warranty date. Thus, failure to reference unsupported or extended-support products and versions in this Security Bulletin does not constitute a determination by IBM that they are unaffected by the vulnerability. Reference to one or more unsupported versions in this Security Bulletin shall not create an obligation for IBM to provide fixes for any unsupported or extended-support products or versions.
Document Location
Worldwide
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Document Information
Modified date:
29 July 2024
UID
ibm17159849