ESB-2018.3956 - [Win][Linux][HP-UX][Solaris][AIX] IBM Sterling Secure Proxy: Multiple vulnerabilities 2018-12-21

Printable version
PGP/GPG verifiable version

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA256

===========================================================================
             AUSCERT External Security Bulletin Redistribution

                               ESB-2018.3956
Multiple Vulnerabilities affect IBM Sterling External Authentication Server
                             21 December 2018

===========================================================================

        AusCERT Security Bulletin Summary
        ---------------------------------

Product:           IBM Sterling Secure Proxy
Publisher:         IBM
Operating System:  AIX
                   HP-UX
                   Linux variants
                   Solaris
                   Windows
Impact/Access:     Cross-site Scripting           -- Remote with User Interaction
                   Provide Misleading Information -- Remote/Unauthenticated      
                   Unauthorised Access            -- Remote/Unauthenticated      
Resolution:        Patch/Upgrade
CVE Names:         CVE-2017-7658 CVE-2017-7657 CVE-2017-7656

Reference:         ESB-2018.3913
                   ESB-2018.3744
                   ESB-2018.3163

Original Bulletin: 
   http://www.ibm.com/support/docview.wss?uid=ibm10792117

- --------------------------BEGIN INCLUDED TEXT--------------------

Security Bulletin: Multiple Vulnerabilities affect IBM Sterling External
Authentication Server

Security Bulletin

Document information

More support for: Sterling Secure Proxy

Component: IBM Sterling External Authentication Server

Software version: 2.4.3, 2.4.2

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

Reference #: 0792117

Modified date: 19 December 2018

Summary

Three Eclipse Jetty request smuggling vulnerabilities were addressed by IBM
Sterling External Authentication Server.

Vulnerability Details

CVE-ID: CVE-2017-7656
Description: Eclipse Jetty is vulnerable to HTTP request smuggling, caused by a
flaw in the HTTP/1.x Parser. By sending a specially-crafted request, an
attacker could exploit this vulnerability to poison the web cache, bypass web
application firewall protection, and conduct XSS attacks.
CVSS Base Score: 6.5
CVSS Temporal Score:
https://exchange.xforce.ibmcloud.com/vulnerabilities/145520 for more information
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N)


CVE-ID: CVE-2017-7657
Description: Eclipse Jetty is vulnerable to HTTP request smuggling, caused by
improper handling of Chunked Transfer-Encoding chunk size. By sending a
specially-crafted request, an attacker could exploit this vulnerability to
poison the web cache, bypass web application firewall protection, and conduct
XSS attacks.
CVSS Base Score: 6.5
CVSS Temporal Score:
https://exchange.xforce.ibmcloud.com/vulnerabilities/145521 for more information
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N)

CVE-ID: CVE-2017-7658
Description: Eclipse Jetty is vulnerable to HTTP request smuggling, caused by a
flaw when handling more than one Content-Length headers. By sending a
specially-crafted request, an attacker could exploit this vulnerability to
poison the web cache, bypass web application firewall protection, and conduct
XSS attacks.
CVSS Base Score: 6.5
CVSS Temporal Score:
https://exchange.xforce.ibmcloud.com/vulnerabilities/145522 for more information
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N)

Affected Products and Versions

IBM Sterling External Authentication Server 2.4.3 through 2.4.3.2 iFix 2

IBM Sterling External Authentication Server 2.4.2 through 2.4.2 iFix 11

Remediation/Fixes

Product                         VRMF      APAR      How to acquire fix

IBM Sterling External
Authentication Server           2.4.3.2   iFix 3    Fix Central

IBM Sterling External
Authentication Server           2.4.2.0   iFix 12   Fix Central

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.

Reference

Complete CVSS v3 Guide
On-line Calculator v3

Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

19 December 2018: Original version 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.

- --------------------------END INCLUDED TEXT--------------------

You have received this e-mail bulletin as a result of your organisation's
registration with AusCERT. The mailing list you are subscribed to is
maintained within your organisation, so if you do not wish to continue
receiving these bulletins you should contact your local IT manager. If
you do not know who that is, please send an email to auscert@auscert.org.au
and we will forward your request to the appropriate person.

NOTE: Third Party Rights
This security bulletin is provided as a service to AusCERT's members.  As
AusCERT did not write the document quoted above, AusCERT has had no control
over its content. The decision to follow or act on information or advice
contained in this security bulletin is the responsibility of each user or
organisation, and should be considered in accordance with your organisation's
site policies and procedures. AusCERT takes no responsibility for consequences
which may arise from following or acting on information or advice contained in
this security bulletin.

NOTE: This is only the original release of the security bulletin.  It may
not be updated when updates to the original are made.  If downloading at
a later date, it is recommended that the bulletin is retrieved directly
from the author's website to ensure that the information is still current.

Contact information for the authors of the original document is included
in the Security Bulletin above.  If you have any questions or need further
information, please contact them directly.

Previous advisories and external security bulletins can be retrieved from:

        https://www.auscert.org.au/bulletins/

===========================================================================
Australian Computer Emergency Response Team
The University of Queensland
Brisbane
Qld 4072

Internet Email: auscert@auscert.org.au
Facsimile:      (07) 3365 7031
Telephone:      (07) 3365 4417 (International: +61 7 3365 4417)
                AusCERT personnel answer during Queensland business hours
                which are GMT+10:00 (AEST).
                On call after hours for member emergencies only.
===========================================================================
-----BEGIN PGP SIGNATURE-----
Comment: http://www.auscert.org.au/render.html?it=1967
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=pYNu
-----END PGP SIGNATURE-----

« Back to bulletins