Security Bulletin
Summary
WebSphere Application Serverは、IBM Business Monitor のコンポーネントとして、同梱されています。
WebSphere Application ServerへのTLS/SSL 通信において、通称FREAK (Factoring Attack on RSA-EXPORT keys) と呼ばれる脆弱性（CVE-2015-0138）の影響が公開されました。
Vulnerability Details
脆弱性の詳細：
CVEID: CVE-2015-0138
DESCRIPTION: A vulnerability in various IBM SSL/TLS implementations could allow a remote attacker to downgrade the security of certain SSL/TLS connections. An IBM SSL/TLS client implementation could accept the use of an RSA temporary key in a non-export RSA key exchange ciphersuite. This could allow a remote attacker using man-in-the-middle techniques to facilitate brute-force decryption of TLS/SSL traffic between vulnerable clients and servers.
This vulnerability is also known as the FREAK attack.
CVSS Base Score: 4.3
CVSS Temporal Score: See https://exchange.xforce.ibmcloud.com/#/vulnerabilities/100691 for the current score
CVSS Environmental Score*: Undefined
CVSS Vector: (AV:N/AC:M/Au:N/C:N/I:P/A:N)
Affected Products and Versions
影響のある製品・バージョン：
次の製品に影響があります。
- WebSphere Business Monitor V7.0.0.x
- IBM Business Monitor V7.5.x
- IBM Business Monitor V8.0.1.x
- IBM Business Monitor V8.5.5.0
- IBM Business Monitor V8.5.6.0
Remediation/Fixes
修正策：
下記のWebSphere Application Serverの文書を参照し、対応してください。
WebSphere Application ServerにおけるRSA Exportグレードの暗号スイートに関する脆弱性の影響について（CVE-2015-0138）
http://www.ibm.com/support/docview.wss?uid=swg21698885
Workarounds and Mitigations
回避策/軽減策：
なし
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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
参照情報：
[IBMサイト]
この文書は、米国 IBM 社の資料を翻訳した参考文書です。翻訳元の文書は、以下のリンクよりご参照ください。
Security Bulletin: A security vulnerability has been identified in WebSphere Application Server shipped with IBM Business Monitor (CVE-2015-0138)
Security Bulletin: Vulnerability with RSA Export Keys may affect IBM WebSphere Application Server (CVE-2015-0138)
[CVSS情報]
独立行政法人 情報処理推進機構: 共通脆弱性評価システムCVSS概説
JVN iPedia: CVSS計算ソフトウェア日本語版
*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:
22 June 2018
UID
swg21701544