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Security Bulletin: Multiple vulnerabilities in the IBM HTTP Server (CVE-2017-15710, CVE-2017-15715, CVE-2018-1301)

Security Bulletin


Summary


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

Vulnerability Details

CVEID: CVE-2018-1301
DESCRIPTION:
Apache HTTPD is vulnerable to a denial of service, caused by an out-of-bounds access error after a header size limit has been reached reading the HTTP header. By sending a specially crafted HTTP request, an attacker could exploit this vulnerability to cause the service to crash.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/140852 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:N/A:L)

CVEID: CVE-2017-15715
DESCRIPTION:
Apache HTTPD could allow a remote attacker to bypass security restrictions, caused by the < FilesMatch > expression matching '$' to a newline character in a malicious filename instead of the end of the filename. By matching the trailing portion of the filename, an attacker could exploit to bypass security controls that use the < FilesMatch > directive.
CVSS Base Score: 3.7
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/140857 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N)

CVEID: CVE-2017-15710
DESCRIPTION:
Apache HTTPD is vulnerable to a denial of service, caused by an out-of-bounds memory write error. By sending a specially crafted Accept-Language header value, an attacker could exploit this vulnerability to cause the service to crash.
CVSS Base Score: 5.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/140858 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:N/A:L)

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

For V9.0.0.0 through 9.0.0.7:
· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PI95670
--OR--
· Apply Fix Pack 9.0.0.8 or later (targeted availability 22 June 2018).


For V8.5.0.0 through 8.5.5.13:

· Upgrade to minimal fix pack levels as required by interim fix and then apply Interim Fix PI95670

--OR--
· Apply Fix Pack 8.5.5.14 (targeted availability 20 August 2018).


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 PI95670


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 PI95670

Get Notified about Future Security Bulletins

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

11 April 2018: Original document published
12 April 2018: updated description and score for CVE-2017-15715

*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, 9.0

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

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

Reference #: 2015344

Modified date: 12 April 2018


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