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AUSCERT External Security Bulletin Redistribution
ESB-2015.2790
Security Bulletin: Padding Oracle Protection in IBM
DataPower Gateways GatewayScript modules (CVE-2015-7412)
10 November 2015
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AusCERT Security Bulletin Summary
---------------------------------
Product: IBM DataPower Gateways
Publisher: IBM
Operating System: Network Appliance
Impact/Access: Access Privileged Data -- Remote/Unauthenticated
Resolution: Patch/Upgrade
CVE Names: CVE-2015-7412
Reference: http://www-01.ibm.com/support/docview.wss?uid=swg21964170
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Security Bulletin: Padding Oracle Protection in IBM DataPower Gateways
GatewayScript modules (CVE-2015-7412)
Security Bulletin
Document information
More support for:
IBM DataPower Gateways
General
Software version:
7.2
Operating system(s):
Firmware
Reference #:
1964170
Modified date:
2015-10-29
Summary
IBM DataPower Gateways has addressed a Padding Oracle Protection vulnerability
in GatewayScript decryption.
Vulnerability Details
CVEID: CVE-2015-7412
DESCRIPTION: IBM DataPower Gateways GatewayScript modules may be vulnerable to
Padding Oracle attacks in some scenarios, which could allow an attacker to
decrypt the captured message, and other messages encrypted using the same
cryptographic keys.
CVSS Base Score: 3.7
CVSS Temporal Score: See
https://exchange.xforce.ibmcloud.com/vulnerabilities/107532 for the current
score
CVSS Environmental Score*: Undefined
CVSS Vector: (CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N)
Affected Products and Versions
IBM DataPower Gateway appliances version 7.2.0.0
Remediation/Fixes
Fix is available in versions 7.2.0.1. Refer to APAR IT10701 for URLs to
download the fix.
You should verify applying this fix does not cause any compatibility issues.
Workarounds and Mitigations
This vulnerability exists only in IBM DataPower Gateways functions configured
with a JWE decrypt action, or using the GatewayScript decryption API.
Requiring the ciphertext to be signed by the sender, and verifying that
signature as a prerequisite to performing decryption will address the
vulnerability.
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alerts like this.
References
Complete CVSS v3 Guide
On-line Calculator v3
Related information
IBM Secure Engineering Web Portal
IBM Product Security Incident Response Blog
Protecting WebSphere DataPower SOA Appliance services against Potential
Security Exposure due to XML Encryption Attack (
http://www-01.ibm.com/support/docview.wss?uid=swg21501021)
Change History
October 29th, 2015: 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.
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