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Security Bulletin: XML External Entity (XXE) injection vulnerability affects IBM Business Process Manager (CVE-2017-1527)

Security Bulletin


Summary

IBM Business Process Manager (BPM) can process XML messages, including messages from untrusted sources. Because of insufficient restriction of an XML parser, XML External Entity injection allows an authenticated remote attacker to send specially crafted XML messages and thus cause a denial of service by exhausting system resources or exfiltrate sensitive information.

Vulnerability Details

CVEID: CVE-2017-1527
DESCRIPTION: IBM Business Process Manager is vulnerable to a XML External Entity Injection (XXE) attack when processing XML data. A remote attacker could exploit this vulnerability to expose sensitive information or consume memory resources.
CVSS Base Score: 7.1
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/130156 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L)

Affected Products and Versions

- IBM Business Process Manager V7.5.0.0 through V7.5.1.2

- IBM Business Process Manager V8.0.0.0 through V8.0.1.3

- IBM Business Process Manager V8.5.0.0 through V8.5.0.2

- IBM Business Process Manager V8.5.5.0

- IBM Business Process Manager V8.5.6.0 through V8.5.6.0 CF2

- IBM Business Process Manager V8.5.7.0 through V8.5.7.0 Cumulative Fix 2017.06

Remediation/Fixes

Install IBM BPM interim fix JR58188 as appropriate for your current version.


As IBM Business Process Manager V7.5 is out of general support, customers with a support extension contract can contact IBM support to request the fix.


For IBM BPM V8.5.7.0 through V8.5.7.0 CF 2017.06 For IBM BPM V8.5.6.0 through V8.5.6.0 CF2
  • Install CF2 as required by iFix and then apply iFix JR58188
For IBM BPM V8.5.5.0 For IBM BPM V8.5.0.0 through V8.5.0.2 For IBM BPM V8.0.0.0 through V8.0.1.3 For IBM BPM V7.5.0.0 through V7.5.1.2

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 v2 Guide
On-line Calculator v2

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 Sergio Ortega Fernández (PwC España, BSS).

Change History

22 Sep 2017: initial 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

Review the IBM security bulletin disclaimer and definitions regarding your responsibilities for assessing potential impact of security vulnerabilities to your environment.

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Document Information

Modified date:
15 June 2018

UID

swg22007346

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