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Security Bulletin: IBM API Connect is affected by a denial of service vulnerability via large JSON payloads (CVE-2018-1779)

Security Bulletin


Summary

API Connect has addressed the following vulnerability.

The management microservice in API Connect version 2018.1 through 2018.3.7 is vulnerable to denial of service attacks via large JSON payloads. An attacker can flood the management service with unauthenticated api requests with large JSON payloads. This could result in the server allocating disproportionate computing resources to process the malicious requests causing the server to crash.

Vulnerability Details

CVEID: CVE-2018-1779
DESCRIPTION: IBM API Connect could allow an unauthenticated attacker to cause a denial of service due to not setting limits on JSON payload size.
CVSS Base Score: 7.5
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/vulnerabilities/148802 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:H)

Affected Products and Versions

Affected API Connect Affected Versions
IBM API Connect 2018.1-2018.3.7

Remediation/Fixes

Product VRMF APAR Remediation / First Fix
IBM API Connect 2018.4.1 LI80361

Addressed in IBM API Connect V2018.4.1

Management Server is impacted.

Follow this link and find the appropriate Management Server package:

http://www.ibm.com/support/fixcentral/swg/quickorder?parent=ibm%7EWebSphere&product=ibm/WebSphere/IBM+API+Connect&release=2018.3.7&platform=All&function=all&source=fc

 

 

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Reference

Complete CVSS v3 Guide
On-line Calculator v3

Related Information

IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog

Change History

November 16, 2018: Original bulletin 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.

Product Alias/Synonym

API Connect

Document information

More support for: IBM API Connect

Component: management server

Software version: 2018.1-2018.3.7

Operating system(s): Platform Independent

Reference #: 0733851

Modified date: 15 November 2018


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