CVE-2005-1249
CVSS5.0
发布时间 :2005-05-25 00:00:00
修订时间 :2008-11-15 00:46:11
NMCOP    

[原文]The IMAP daemon (IMAPD32.EXE) in Ipswitch Collaboration Suite (ICS) allows remote attackers to cause a denial of service (CPU consumption) via an LSUB command with a large number of null characters, which causes an infinite loop.


[CNNVD]Ipswitch IMail IMAP SELECT命令拒绝服务漏洞(CNNVD-200505-1198)

        Ipswitch IMail server是基于Windows的通讯和协作解决方案。
        Ipswitch Inc的Imail IMAP server中存在远程拒绝服务漏洞,攻击者可以利用这个漏洞导致目标服务崩溃。
        漏洞起因是处理SELECT命令的超长参数。如果攻击者能够提供长度大约为260个字节的字符串的话,就可能触发栈溢出,导致守护程序退出。但无法再进一步利用这个漏洞。
        

- CVSS (基础分值)

CVSS分值: 5 [中等(MEDIUM)]
机密性影响: NONE [对系统的机密性无影响]
完整性影响: NONE [不会对系统完整性产生影响]
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: [--]
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-2005-1249
(官方数据源) MITRE
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2005-1249
(官方数据源) NVD
http://www.cnnvd.org.cn/vulnerability/show/cv_cnnvdid/CNNVD-200505-1198
(官方数据源) CNNVD

- 其它链接及资源

http://www.ipswitch.com/support/imail/releases/imail_professional/im82hf2.html
(PATCH)  CONFIRM  http://www.ipswitch.com/support/imail/releases/imail_professional/im82hf2.html
http://www.securityfocus.com/bid/13727
(UNKNOWN)  BID  13727
http://www.idefense.com/application/poi/display?id=245&type=vulnerabilities
(VENDOR_ADVISORY)  IDEFENSE  20050524 Ipswitch IMail IMAP LSUB DoS Vulnerability
http://securitytracker.com/id?1014047
(UNKNOWN)  SECTRACK  1014047

- 漏洞信息

Ipswitch IMail IMAP SELECT命令拒绝服务漏洞
中危 资料不足
2005-05-25 00:00:00 2006-08-30 00:00:00
远程  
        Ipswitch IMail server是基于Windows的通讯和协作解决方案。
        Ipswitch Inc的Imail IMAP server中存在远程拒绝服务漏洞,攻击者可以利用这个漏洞导致目标服务崩溃。
        漏洞起因是处理SELECT命令的超长参数。如果攻击者能够提供长度大约为260个字节的字符串的话,就可能触发栈溢出,导致守护程序退出。但无法再进一步利用这个漏洞。
        

- 公告与补丁

        暂无数据

- 漏洞信息 (F39311)

iDEFENSE Security Advisory 2005-05-24.2 (PacketStormID:F39311)
2005-08-14 00:00:00
iDefense Labs  idefense.com
advisory,remote,denial of service,imap
CVE-2005-1249
[点击下载]

iDEFENSE Security Advisory 05.24.05-2 - Remote exploitation of a denial of service (DoS) vulnerability in Ipswitch Inc.'s 8.13 IMail IMAP daemon allows attackers to cause 100 percent CPU use on the server, thereby preventing legitimate users from retrieving e-mail.

Ipswitch IMail IMAP LSUB DoS Vulnerability

iDEFENSE Security Advisory 05.24.05
www.idefense.com/application/poi/display?id=245&type=vulnerabilities
May 24, 2005

I. BACKGROUND

Ipswitch Collaboration Suite (ICS) is a comprehensive communication and 
collaboration solution for Microsoft Windows with a customer base of 
over 53 million users. More information is available on the vendor's 
website:

     http://www.ipswitch.com/products/IMail_Server/index.html

II. DESCRIPTION

Remote exploitation of a denial of service (DoS) vulnerability in 
Ipswitch Inc.'s IMail IMAP daemon allows attackers to cause 100 percent 
CPU use on the server, thereby preventing legitimate users from 
retrieving e-mail.

The problem specifically exists within IMAPD32.EXE upon parsing a 
malformed LSUB command. An attacker can cause the daemon to produce 
heavy load by transmitting a long string of NULL characters to the 
'LSUB' IMAP directive. This, in turn, causes an infinite loop, 
eventually exhausting all available system resources and causing a 
denial of service.

III. ANALYSIS

Exploitation allows unauthenticated remote attackers to render the IMAP 
server useless, thereby preventing legitimate users from retrieving e-
mail. This attack takes few resources to launch and can be repeated 
to ensure that an unpatched system is unable to recover. Exploitation 
requires a valid IMAP account, thus limiting the impact of this 
vulnerability.

IV. DETECTION

iDEFENSE has confirmed the existence of this vulnerability in Ipswitch 
IMail version 8.13. It is suspected that earlier versions are also 
vulnerable.

V. WORKAROUND

As this vulnerability is exploited after authentication occurs, ensuring

that only trusted users have accounts can mitigate the risk somwhat. As 
a more effective workaround, consider limiting access to the IMAP server

by filtering TCP port 143. If possible, consider disabling IMAP and 
forcing users to use POP3.

VI. VENDOR RESPONSE

The vendor has released the following patch to fix this vulnerability:

ftp://ftp.ipswitch.com/Ipswitch/Product_Support/IMail/imail82hf2.exe

The associated vendor advisory can be found at:

http://www.ipswitch.com/support/imail/releases/imail_professional/im82hf
2.html

VII. CVE INFORMATION

The Common Vulnerabilities and Exposures (CVE) project has assigned the
name CAN-2005-1249 to this issue. This is a candidate for inclusion in
the CVE list (http://cve.mitre.org), which standardizes names for
security problems.

VIII. DISCLOSURE TIMELINE

04/25/2005  Initial vendor notification
05/10/2005  Initial vendor response
05/24/2005  Public disclosure

IX. CREDIT

The discoverer of the first vulnerability wishes to remain anonymous.

Get paid for vulnerability research
http://www.idefense.com/poi/teams/vcp.jsp

Free tools, research and upcoming events
http://labs.idefense.com

X. LEGAL NOTICES

Copyright (c) 2005 iDEFENSE, Inc.

Permission is granted for the redistribution of this alert
electronically. It may not be edited in any way without the express
written consent of iDEFENSE. If you wish to reprint the whole or any
part of this alert in any other medium other than electronically, please
email customerservice@idefense.com for permission.

Disclaimer: The information in the advisory is believed to be accurate
at the time of publishing based on currently available information. Use
of the information constitutes acceptance for use in an AS IS condition.
There are no warranties with regard to this information. Neither the
author nor the publisher accepts any liability for any direct, indirect,
or consequential loss or damage arising from use of, or reliance on,
this information.

_______________________________________________
Full-Disclosure - We believe in it.
Charter: http://lists.grok.org.uk/full-disclosure-charter.html
Hosted and sponsored by Secunia - http://secunia.com/
    

- 漏洞信息

16803
Ipswitch IMail IMAP Daemon Malformed LSUB Command Remote DoS
Remote / Network Access Denial of Service
Loss of Availability
Exploit Unknown

- 漏洞描述

IMail Server contains a flaw that may allow a remote denial of service. The issue is due to the IMAP daemon (IMAPD32.EXE) service while parsing malformed LSUB commands. By passing an overly long string of NULL characters to the 'LSUB' command, a remote attacker can cause the daemon to go into an infinite loop and consume all available CPU resources resulting in a loss of availability for the IMAP service.

- 时间线

2005-05-24 2005-04-25
Unknow Unknow

- 解决方案

Upgrade to version 8.2 Hotfix 2 or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

- 相关参考

- 漏洞作者

 

 

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