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             AUSCERT External Security Bulletin Redistribution

                               ESB-2020.3199
    Security Bulletin: WebSphere Application Server is vulnerable to an
            information exposure vulnerability (CVE-2020-4643)
                             18 September 2020

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

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

Product:           WebSphere Application Server
Publisher:         IBM
Operating System:  AIX
                   HP-UX
                   IBM i
                   Linux variants
                   Solaris
                   Windows
                   z/OS
Impact/Access:     Access Confidential Data -- Remote/Unauthenticated
Resolution:        Patch/Upgrade
CVE Names:         CVE-2020-4643  

Original Bulletin: 
   https://www.ibm.com/support/pages/node/6334311

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

Security Bulletin: WebSphere Application Server is vulnerable to an information
exposure vulnerability (CVE-2020-4643)

Security Bulletin


Summary

WebSphere Application Server is vulnerable to an information exposure
vulnerability. This has been addressed.

More support for: WebSphere Application Server

Software version: 7.0,8.0,8.5,9.0

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

Document number:
6334311

Modified date:
17 September 2020

Vulnerability Details

CVEID      :   CVE-2020-4643

DESCRIPTION:   IBM WebSphere Application Server is vulnerable to an XML
External Entity Injection (XXE) attack when processing XML data. A remote
attacker could exploit this vulnerability to expose sensitive information.

CVSS Base score: 7.5

CVSS Temporal Score: See: https://exchange.xforce.ibmcloud.com/vulnerabilities/
185590 for the current score.

CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N)

Affected Products and Versions

+----------------------------+----------+
|Affected Product(s)         |Version(s)|
+----------------------------+----------+
|WebSphere Application Server|9.0       |
+----------------------------+----------+
|WebSphere Application Server|8.5       |
+----------------------------+----------+
|WebSphere Application Server|8.0       |
+----------------------------+----------+
|WebSphere Application Server|7.0       |
+----------------------------+----------+


Remediation/Fixes

For WebSphere Application Server traditional and WebSphere Application Server
Hypervisor Edition:

For V9.0.0.0 through 9.0.5.5
· Upgrade to minimal fix pack levels as required by interim fix and then apply
Interim Fix  PH27509
- --OR--
· Apply Fix Pack 9.0.5.6 or later (targeted availability 4Q2020). 

For V8.5.0.0 through 8.5.5.17:
· Upgrade to minimal fix pack levels as required by interim fix and then apply
Interim Fix  PH27509
- --OR--
· Apply Fix Pack 8.5.5.19 or later (targeted availability 1Q2021).

 

For V8.0.0.0 through 8.0.0.15:
· Upgrade to 8.0.0.15 and then apply Interim Fix PH27509
 

For V7.0.0.0 through 7.0.0.45:
· Upgrade to 7.0.0.45 and  then apply Interim Fix  PH27509
 

Additional interim fixes may be available and linked off the interim fix
download page.

WebSphere Application Server V7.0 and V8.0 are no longer in full support; IBM
recommends upgrading to a fixed, supported version/release/platform of the
product.


Workarounds and Mitigations

None

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alerts like this.

References

Complete CVSS v3 Guide
On-line Calculator v3

Off

Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Acknowledgement

The vulnerability was reported to IBM by Kylinking

Change History

17 Sept 2020: Initial Publication

*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

Modified date:
17 September 2020

UID

ibm16334311

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

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