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Security Bulletin: Security Vulnerabilities in IBM HTTP Server (CVE-2017-9798, CVE-2017-12618)

Security Bulletin


Summary

There is an information disclosure vulnerability and a denial of service vulnerability that affect the IBM HTTP Server used by WebSphere Application Server.

Vulnerability Details


CVEID: CVE-2017-9798
DESCRIPTION:
Apache HTTP Server could allow a remote attacker to obtain sensitive information, caused by a flaw in the HTTP OPTIONS method, aka Optionsbleed. By sending an OPTIONS HTTP request, a remote attacker could exploit this vulnerability to obtain sensitive information.
CVSS Base Score: 7.5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/132159 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)


CVEID: CVE-2017-12618
DESCRIPTION:
Apache Portable Runtime Utility (APR-util)is vulnerable to a denial of service, caused by failing to validate the integrity of SDBM database files used by apr_sdbm*() functions. By making a specially-crafted program or process, a local authenticated attacker could exploit this vulnerability to cause the application to crash.
CVSS Base Score: 5.5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/134048 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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
  • Version 8.0
  • Version 7.0

Remediation/Fixes

The fixes for these are both of these vulnerabilities are contained in interim fix PI87445.
PI87445 - CVE-2017-9798 for IBM HTTP Server
PI87663 - CVE-2017-12618 for IBM HTTP Server

For V9.0.0.0 through 9.0.0.5:
· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PI87445

--OR--
· Apply Fix Pack 9.0.0.6 or later.


For V8.5.0.0 through 8.5.5.12:

· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PI87445

--OR--
· Apply Fix Pack 8.5.5.13 or later.


For V8.0.0.0 through 8.0.0.14:

· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PI87445

--OR--
· Apply Fix Pack 8.0.0.15 or later.


For V7.0.0.0 through 7.0.0.43:

· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PI87445

--OR--
· Apply Fix Pack 7.0.0.45 or later.

Workarounds and Mitigations

none

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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.

References

Complete CVSS v3 Guide
On-line Calculator v3

Related information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

21 November 2017: 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

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.

Document information

More support for: WebSphere Application Server
IBM HTTP Server

Software version: 7.0, 8.0, 8.5, 8.5.5, 9.0

Operating system(s): AIX, HP-UX, Linux, Solaris, Windows, z/OS

Software edition: Advanced, Base, Enterprise, Network Deployment, Single Server

Reference #: 2009782

Modified date: 26 November 2017