发布时间 :2005-05-03 00:00:00
修订时间 :2008-09-05 16:49:03

[原文]Integer signedness error in certain older versions of the NeL library, as used in Mtp-Target 1.2.2 and earlier, and possibly other products, allows remote attackers to cause a denial of service (memory consumption or server crash) via a negative value in a STLport call, which is not caught by a signed comparison.

[CNNVD]Mtp-Target Server内存损坏漏洞(CNNVD-200505-859)

        NeL库某些旧版本在用于Mtp-Target 1.2.2及更早版本以及可能的其他产品上时存在整数符号错误,远程攻击这可以通过一个不能被有符号比较所捕捉的在STLport调用中的负数值,发起拒绝服务攻击(内存损耗或服务器崩溃)。

- 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)


- OVAL (用于检测的技术细节)


- 官方数据库链接
(官方数据源) MITRE
(官方数据源) NVD
(官方数据源) CNNVD

- 其它链接及资源
(UNKNOWN)  BUGTRAQ  20050501 Clients format string and server crash in Mtp-Target 1.2.2

- 漏洞信息

Mtp-Target Server内存损坏漏洞
中危 其他
2005-05-03 00:00:00 2005-10-20 00:00:00
        NeL库某些旧版本在用于Mtp-Target 1.2.2及更早版本以及可能的其他产品上时存在整数符号错误,远程攻击这可以通过一个不能被有符号比较所捕捉的在STLport调用中的负数值,发起拒绝服务攻击(内存损耗或服务器崩溃)。

- 公告与补丁


- 漏洞信息

Mtp Target NeL Library STLport Remote DoS
Remote / Network Access Denial of Service
Loss of Availability
Exploit Public

- 漏洞描述

A remote overflow exists in Mtp Target. The NeL library fails to verify if the amount of memory to allocate, a user-supplied integer parameter, is less than 1,000,000 bytes. With a specially crafted request containing a negative value, an attacker can cause the server to allocate a large amount of memory through a call to STLport, resulting in a loss of availability of the server process.

- 时间线

2005-05-01 Unknow
2005-05-01 Unknow

- 解决方案

Currently, there are no known upgrades, patches, or workarounds available to correct this issue.

- 相关参考

- 漏洞作者

- 漏洞信息

Mtp-Target Server Memory Corruption Vulnerability
Failure to Handle Exceptional Conditions 13463
Yes No
2005-05-02 12:00:00 2009-07-12 02:06:00
Luigi Auriemma <> is credited with the discovery of this issue.

- 受影响的程序版本

Mtp-Target Mtp-Target 1.2.2

- 漏洞讨论

The Mtp-Target server is prone to a memory corruption vulnerability. The issue exists because a comparison fails to ensure that an integer value parameter retrieved from a client is signed. A check is made to ensure that the user-supplied value is less than 1000000 bytes. If the value passed is FFFFFFFFh, it is interpreted as a signed -1 and the check passes. The value is later used as an unsigned integer in a memory allocation operation. An allocation of 4.29 GB of data is attempted and the service crashes.

Immediate consequences of exploitation of this vulnerability are a denial of service.

- 漏洞利用

The following exploit has been made available:

- 解决方案

Currently we are not aware of any vendor-supplied patches for this issue. If you feel we are in error or are aware of more recent information, please mail us at: <>.

- 相关参考