發信人: tw-cert () 看板: security 日期: Mon Mar 18 19:27:46 2002 標題: TW-CA-2002-050-[Microsoft Security Bulletin(MS02-008): MS02 TW-CA-2002-050-[Microsoft Security Bulletin(MS02-008): MS02-008: Patch Available for "XMLHTTP Control Can Allow Access to Local Files" Vulnerability] ------------------------------------------------------------------------------- TWCERT發布日期：2002-03-15 原漏洞發布日期：2002-02-21 分類：Info Leak 來源參考：Microsoft Security Bulletin(MS02-008) ------ 簡述 ------------------------------------------------------------------- Microsoft 公司發佈了一個 Microsoft XML Core Services (MSXML) 的弱點。攻擊者會利 用此弱點透過網站方式取得用戶端的資訊，且影響 Windows XP, SQL Server 和 IE 6.0。 建議使用這些產品的使用者能更新此修正程式。 誰應該閱讀此篇文件：使用 MicrosoftR XML Core Services 2.6 或更新版本的使用者。 這包括使用 Microsoft Windows XP, SQL Server 2000 和 Internet Explorer 6.0 使用者。 受影響的地方 ：資訊洩漏。 風險值 ：嚴重。 建議 ：使用者和系統管理員應該盡速在受影響的系統上更新修正程式。 有關此修正程式的相關資訊可以參考下列的網址： http://www.microsoft.com/technet/security/bulletin/MS02-008.asp ------ 說明 ------------------------------------------------------------------- Microsoft XML Core Services (MSXML) 包含 XMLHTTP ActiveX control，這是允許網頁 透過 POST, GET 和 PUT 等動作，利用瀏覽器接收 XML 資料。這管理提供了限制網頁只能 接收遠端資料的安全機制。 當 IE 的安全區域設定使用 XMLHTTP 控制元件時，對於網站上的資料回傳數據產生一個漏 洞。攻擊者能夠利用此漏洞指定用戶端系統內的資料來源，將用戶端的資料回傳到攻擊者 的網站。 攻擊者能夠誘騙使用者去拜訪其網站然後利用此漏洞而獲得權限，但不能透過 HTML 電子 郵件而加以利用之。另外，攻擊者能夠得知他們想知道的完整檔案路徑和名稱。最後，此 漏洞不提供攻擊者增加、修改和刪除資料的權限。 - 風險: Severity Rating: Internet Servers Intranet Servers Client Servers MSXML version 2.6 Moderate Moderate Critical MSXML version 3.0 Moderate Moderate Critical MSXML version 4.0 Moderate Moderate Critical 測試的平台： - 微軟在 Microsoft tested MSXML versions 2.0, 2.5, 2.6, 3.0和 4.0環境下做存取測 試，而以前系統版本不支援長檔名，則不一定會受到這漏洞的影響。 修正： V1.0 (2002/02/21): 公佈 ------ 影響平台 --------------------------------------------------------------- Microsoft XML Core Services versions 2.6, 3.0, 4.0 下列幾種產品會受 Microsoft XML Core Services 版本影響： Microsoft Windows XP Microsoft Internet Explorer 6.0 Microsoft SQL Server 2000 ------ 修正方式 --------------------------------------------------------------- 修正程式可以從下列網址取得： Microsoft XML Core Services: http://www.microsoft.com/windows/ie/downloads/critical/q317244/download.asp http://www.microsoft.com/Windowsupdate 注意： - 安裝平台: MSXML versions 2.6 Gold, 3.0 Gold, 3.0 Service Pack 1, 3.0 Service Pack 2, 或 4.0 Gold 。 - 此修正程式將會包含在下列版本中: MSXML, 3.0 SP3 and 4.0 Service Pack 1 Microsoft Windows 2000 Service Pack 3 Microsoft Windows XP Service Pack 1 Microsoft Internet Explorer 6.0 Service Pack 1 Microsoft SQL Server 2000 Service Pack 3 - 修補完畢後需要重新啟動系統。 - 如果要確定此修正程式是否在此機器上正確安裝，請核對以下的 registry key 是否有 正確安裝在此機器上： HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\DataAccess\Q318202 (for MSXML 2.0) HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\DataAccess\Q318203 (for MSXML 3.0) HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\MSXML4\Q317244 (for MSXML 4.0) - 可由下列方式取得修正程式： 1.可經由微軟程式下載中心(Microsoft Download Center)中取得，可使用 "security_patch" 字串尋找 2.微軟的使用者可經由 WindowsUpdate 的網站取得 http://windowsupdate.microsoft.com/ 3.所有的修正程式可經由 WindowsUpdate 網站取得，也可到 WindowsUpdate 組織網站 取得資料。 - 其他有關安全性的修正程式，可由微軟程式下載中心(Microsoft Download Center)中取得。 ------ 影響結果 --------------------------------------------------------------- 此漏洞會影響用戶端系統上軟體，並造成資料外流。 ------ 連絡 TW-CERT ----------------------------------------------------------- Tel: 886-7-5250211 Fax: 886-7-5250212 886-2-23563303 886-2-23924082 Email: twcert@cert.org.tw URL: http://www.cert.org.tw/ PGP key: http://www.cert.org.tw/eng/pgp.htm =============================================================================== 附件：[MS02-008: Patch Available for "XMLHTTP Control Can Allow Access to Local Files" Vulnerability] ------ Overview --------------------------------------------------------------- XMLHTTP Control Can Allow Access to Local Files Originally posted: February 21, 2002 Summary Who should read this bulletin: Customers using MicrosoftR XML Core Services 2.6 and later. This includes customers using Microsoft WindowsR XP, SQL Server? 2000, and Internet Explorer 6.0. Impact of vulnerability: Information disclosure Maximum Severity Rating: Critical Recommendation: Customers and system administrators should apply the patch to all affected machines immediately. - ------ Description ---------------------------------------------------------- Microsoft XML Core Services (MSXML) includes the XMLHTTP ActiveX control, which allows web pages rendering in the browser to send or receive XML data via HTTP operations such as POST, GET, and PUT. The control provides security measures designed to restrict web pages so they can only use the control to request data from remote data sources. A flaw exists in how the XMLHTTP control applies IE security zone settings to a redirected data stream returned in response to a request for data from a web site. A vulnerability results because an attacker could seek to exploit this flaw and specify a data source that is on the user’s local system. The attacker could then use this to return information from the local system to the attacker’s web site. An attacker would have to entice the user to a site under his control to exploit this vulnerability. It cannot be exploited by HTML email. In addition, the attacker would have to know the full path and file name of any file he would attempt to read. Finally, this vulnerability does not give an attacker any ability to add, change or delete data. Mitigating factors: The vulnerability can only be exploited via a web site. It would not be possible to exploit this vulnerability via HTML mail. The attacker would need to know the full path and file name of a file in order to read it. The vulnerability does not provide any ability to add, change, or delete files. Severity Rating: Internet Servers Intranet Servers Client Systems MSXML version 2.6 Moderate Moderate Critical MSXML version 3.0 Moderate Moderate Critical MSXML version 4.0 Moderate Moderate Critical The above assessment is based on the types of systems affected by the vulnerability, their typical deployment patterns, and the effect that exploiting the vulnerability would have on them. This vulnerability affects the disclosure of personal information, and is most likely to have an impact on client systems. Vulnerability identifier: CAN-2002-0057 Tested Versions: Microsoft tested MSXML versions 2.0, 2.5, 2.6, 3.0, and 4.0. Previous versions are no longer supported, and may or may not be affected by these vulnerabilities. - ------ Platform ------------------------------------------------------------- Microsoft XML Core Services versions 2.6, 3.0, and 4.0 An affected version of Microsoft XML Core Services also ships as part of the following products: Microsoft Windows XP Microsoft Internet Explorer 6.0 Microsoft SQL Server 2000 - ------ Solution ------------------------------------------------------------- Download locations for this patch Microsoft XML Core Services: http://www.microsoft.com/windows/ie/downloads/critical/q317244/download.asp http://www.microsoft.com/Windowsupdate Additional information about this patch Installation platforms: MSXML versions 2.6 Gold, 3.0 Gold, 3.0 Service Pack 1, 3.0 Service Pack 2, or 4.0 Gold Inclusion in future service packs: MSXML, 3.0 SP3 and 4.0 Service Pack 1 Microsoft Windows 2000 Service Pack 3 Microsoft Windows XP Service Pack 1 Microsoft Internet Explorer 6.0 Service Pack 1 Microsoft SQL Server 2000 Service Pack 3 Reboot needed: Yes Superseded patches: None. Verifying patch installation: To verify that the patch has been installed on the machine, confirm that the following registry keys have been created on the machine: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\DataAccess\Q318202 (for MSXML 2.0) HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\DataAccess\Q318203 (for MSXML 3.0) HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Updates\MSXML4\Q317244 (for MSXML 4.0) Caveats: None Localization: This patch can be installed on all languages. Obtaining other security patches: Patches for other security issues are available from the following locations: Security patches are available from the Microsoft Download Center, and can be most easily found by doing a keyword search for "security_patch". Patches for consumer platforms are available from the WindowsUpdate web site All patches available via WindowsUpdate also are available in a redistributable form from the WindowsUpdate Corporate site. Other information: Support: Microsoft Knowledge Base articles Q318202 (for MSXML 2.0), Q318203 (for MSXML 3.0), and Q317244 (for MSXML 4.0) discuss this issue and will be available approximately 24 hours after the release of this bulletin. Knowledge Base articles can be found on the Microsoft Online Support web site. Technical support is available from Microsoft Product Support Services. There is no charge for support calls associated with security patches. Security Resources: The Microsoft TechNet Security Web Site provides additional information about security in Microsoft products. Disclaimer: The information provided in the Microsoft Knowledge Base is provided "as is" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply. Revisions: V1.0 (February 21, 2002): Bulletin Created. - ------ Impact --------------------------------------------------------------- Information disclosure -- * Origin: 中山大學-美麗之島BBS * From: 140.117.101.140 [已通過認證] .