Opera < 11.51 Multiple Vulnerabilities (BEAST)

medium Nessus プラグイン ID 56042
New! Vulnerability Priority Rating (VPR)

Tenable では、すべての脆弱性に対して動的な VPR が計算されます。VPR は脆弱性の情報を、脅威インテリジェンスや機械学習アルゴリズムと組み合わせて、攻撃時に最も悪用される可能性の高い脆弱性を予測します。詳細は、 「VPR とは何で、CVSS とはどう違うのか」を参照してください。

VPR スコア : 2.7


The remote host contains a web browser that is affected by multiple vulnerabilities.


The version of Opera installed on the remote Windows host is prior to 11.51. It is, therefore, affected by multiple vulnerabilities :

- An unspecified error can allow an insecure or malicious site to cause the browser to display security information belonging to another, secure site in the address bar. This causes the insecure or malicious site to appear to be part of, or secured by, a third-party site. (CVE-2011-3388)

- An information disclosure vulnerability, known as BEAST, exists in the SSL 3.0 and TLS 1.0 protocols due to a flaw in the way the initialization vector (IV) is selected when operating in cipher-block chaining (CBC) modes. A man-in-the-middle attacker can exploit this to obtain plaintext HTTP header data, by using a blockwise chosen-boundary attack (BCBA) on an HTTPS session, in conjunction with JavaScript code that uses the HTML5 WebSocket API, the Java URLConnection API, or the Silverlight WebClient API. (CVE-2011-3389)


Upgrade to Opera 11.51 or later.







深刻度: Medium

ID: 56042

ファイル名: opera_1151.nasl

バージョン: 1.20

タイプ: local

エージェント: windows

ファミリー: Windows

公開日: 2011/9/1

更新日: 2018/11/15

依存関係: opera_installed.nasl


リスクファクター: Medium

VPR スコア: 2.7

CVSS v2.0

Base Score: 5.8

Temporal Score: 4.3

ベクトル: AV:N/AC:M/Au:N/C:P/I:P/A:N

現状ベクトル: E:U/RL:OF/RC:C


CPE: cpe:/a:opera:opera_browser

必要な KB アイテム: SMB/Opera/Version

エクスプロイトの容易さ: No known exploits are available

パッチ公開日: 2011/8/31

脆弱性公開日: 2011/8/31


CVE: CVE-2011-3388, CVE-2011-3389

BID: 49388, 49978

CERT: 864643