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AUSCERT External Security Bulletin Redistribution
ESB-2017.1794
Security Bulletin: Multiple Security Vulnerabilities in IBM HTTP Server
(CVE-2017-7679, CVE-2017-7668, CVE-2017-3167)
21 July 2017
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AusCERT Security Bulletin Summary
---------------------------------
Product: IBM HTTP Server
Publisher: IBM
Operating System: AIX
HP-UX
Solaris
Linux variants
Windows
z/PS
Impact/Access: Denial of Service -- Remote/Unauthenticated
Unauthorised Access -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2017-7679 CVE-2017-7668 CVE-2017-3167
Reference: ESB-2017.1603
ESB-2017.1583
ESB-2017.1533
Original Bulletin:
http://www.ibm.com/support/docview.wss?uid=swg22005280
- --------------------------BEGIN INCLUDED TEXT--------------------
Security Bulletin: Multiple Security Vulnerabilities in IBM HTTP Server
(CVE-2017-7679, CVE-2017-7668, CVE-2017-3167)
Security Bulletin
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 #:
2005280
Modified date:
19 July 2017
Summary
There are multiple vulnerabilities in the IBM HTTP Server used by WebSphere
Application Server.
Vulnerability Details
CVEID:
CVE-2017-7679
DESCRIPTION:
Apache HTTPD could allow a remote attacker to obtain sensitive information,
caused by a buffer overread in mod_mime. By sending a specially crafted
Content-Type response header, a remote attacker could exploit this
vulnerability to read one byte past the end of a buffer.
CVSS Base Score: 5.3
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/127420
for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N)
CVEID:
CVE-2017-7668
DESCRIPTION:
Apache HTTPD is vulnerable to a denial of service, caused by a buffer
overread in the ap_find_token() function. By sending a specially crafted
sequence of request headers, a remote attacker could exploit this
vulnerability to cause a segmentation fault.
CVSS Base Score: 5.3
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/127419
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-2017-3167
DESCRIPTION:
Apache HTTPD could allow a remote attacker to bypass security restrictions,
caused by the use of the ap_get_basic_auth_pw() function by third-party
modules outside of the authentication phase. A remote attacker could exploit
this vulnerability to bypass authentication requirements.
CVSS Base Score: 5.3
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/127416
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:L/A:N)
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 CVE's above are contained in 3 separate APARs
PI82260 for CVE-2017-3167
PI82263 for CVE-2017-7668
PI82481 for CVE-2017-7679
For V9.0.0.0 through 9.0.0.4:
PI82481
- --OR--
Apply Fix Pack 9.0.0.5 or later (targeted availability 29 September 2017).
For V8.5.0.0 through 8.5.5.11:
If you do not install the interim fix please note that: CVE-2017-3167 and
CVE-2017-7668 will be shipped in fixpack 8.5.5.12 available 21 July 2017.
CVE-2017-7679 will be shipped in fixpack 8.5.5.13 (targeted availability 05
February 2018).
Upgrade to minimal fix pack levels as required by interim fix and then apply
Interim Fix
PI82481
- --OR--
Apply Fix Pack 8.5.5.12 or 8.5.5.13 as noted above.
For V8.0.0.0 through 8.0.0.13:
Upgrade to minimal fix pack levels as required by interim fix and then apply
Interim Fix
PI82481
- --OR--
Apply Fix Pack 8.0.0.14 or later (targeted availability 16 October 2017).
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
PI82481
- --OR--
Apply Fix Pack 7.0.0.45 or later (targeted availablility 2Q2018).
Workarounds and Mitigations
none
Get Notified about Future Security Bulletins
Subscribe to My Notifications to be notified of important product support
alerts like this.
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
19 July 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.
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