Confluence セキュリティ勧告 - 2008-07-03

In this advisory:

さまざまな Confluence アクションの XSS 脆弱性

深刻度

Atlassian rates these vulnerabilities as high, according to the scale published in Confluence Security. The scale allows us to rank a vulnerability as critical, high, moderate or low.

Risk Assessment

We have identified and fixed a number of security flaws which may affect Confluence instances in a public environment. The flaws are all XSS (cross-site scripting) vulnerabilities in various Confluence actions. Each vulnerability potentially allows a malicious user (hacker) to embed their own JavaScript into a Confluence page.

• ハッカーはこの欠陥を利用して他のユーザーのセッション クッキーやその他の資格情報を盗み、その資格情報をハッカー自身の Web サーバーに送り返す可能性があります。
• The hacker's text and script might be displayed to other people viewing the Confluence page. This is potentially damaging to your company's reputation.

You can read more about XSS attacks at cgisecurity, CERT and other places on the web.

Risk Mitigation

If you judge it necessary, you can disable public access (e.g. anonymous access and public signon) to your wiki until you have applied the necessary patch or upgrade. For even tighter control, you could restrict access to trusted groups only.

Vulnerability

ハッカーは、以下の表に示す Confluence アクションに独自の JavaScript を注入できます。各アクションは、ユーザーが Confluence で特定の機能 (リンクやボタンのクリックなど) を実行したときに呼び出されます。アクションは、ブラウザーのアドレス バーに URL を入力するだけでも呼び出せます。不正な JavaScript は、ユーザーが URL を呼び出すときに実行されます。

For more details please refer to the related JIRA issue, also shown in the table below.

修正

These issues have been fixed in Confluence 2.8.2 (see the release notes), which you can download from the download centre.

Alternatively, you can download and install the patches provided on our JIRA site. For more information, please refer to the specific JIRA issues shown in the table of vulnerabilities above.