Security Bulletin: Multiple vulnerabilities within Jackson JSON library affect IBM Business Automation Workflow (CVE-2017-17485, CVE-2018-5968, CVE-2018-7489)

Summary

Multiple security vulnerabilities have been reported for Jackson JSON library that is used by IBM Business Automation Workflow.

Vulnerability Details

CVEID: CVE-2018-7489 DESCRIPTION: FasterXML jackson-databind could allow a remote attacker to execute arbitrary code on the system, caused by a deserialization flaw in the readValue method of the ObjectMapper. By sending specially crafted JSON input, an attacker could exploit this vulnerability to execute arbitrary code on the system.
CVSS Base Score: 7.3
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/139549&gt; 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:L/A:L)

CVEID: CVE-2018-5968 DESCRIPTION: FasterXML jackson-databind could allow a remote attacker to execute arbitrary code on the system, caused by deserialization flaws. By using two different gadgets that bypass a blocklist, an attacker could exploit this vulnerability to execute arbitrary code on the system.
CVSS Base Score: 7.3
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/138088&gt; 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:L/A:L)

CVEID: CVE-2017-17485 DESCRIPTION: Jackson-databind could allow a remote attacker to execute arbitrary code on the system, caused by a flaw in the default-typing feature. An attacker could exploit this vulnerability to execute arbitrary code on the system.
CVSS Base Score: 9.8
CVSS Temporal Score: See <https://exchange.xforce.ibmcloud.com/vulnerabilities/137340&gt; for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H)

Affected Products and Versions

- IBM Business Automation Workflow V18.0.0.0 is affected by CVE-2017-17485, CVE-2018-5968, CVE-2018-7489

- IBM Business Process Manager V8.6.0.0 through V8.6.0.0 Cumulative Fix 2018.03 is affected by CVE-2017-17485, CVE-2018-5968, CVE-2018-7489

- IBM Business Process Manager V8.5.7.0 through V8.5.7.0 Cumulative Fix 2017.06 is affected by CVE-2018-5968, CVE-2018-7489

Remediation/Fixes

The recommended solution is to apply the Interim Fix (iFix) or Cumulative Fix (CF) containing APAR JR59330 as soon as practical:

• IBM Business Automation Workflow
• IBM Business Process Manager
• IBM Business Process Manager Advanced
• IBM Business Process Manager Standard
• IBM Business Process Manager Express

For IBM Business Automation Workflow V18.0.0.0

· Upgrade to minimal cumulative fix levels as required by iFix and then apply iFix JR59330

--OR–
· Apply cumulative fix Business Automation Workflow V18.0.0.1 (planned for end of Q2)

For IBM Business Process Manager V8.6.0.0 through V8.6.0.0 CF 2018.03
· Upgrade to minimal cumulative fix levels as required by iFix and then apply iFix JR59330
--OR–
· Apply cumulative fix Business Automation Workflow V18.0.0.1 (planned for end of Q2)

For IBM BPM V8.5.7.0 through V8.5.7.0 CF 2017.06
· Apply Cumulative Fix 2017.06 and then apply iFix JR59330

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

Change History

16 May 2018: 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.

Internal Use Only

Advisory ID 11234
Product Record ID 113449

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