CVE-2002-0825
CVSS7.5
发布时间 :2002-08-12 00:00:00
修订时间 :2008-09-05 16:29:03
NMCOS    

[原文]Buffer overflow in the DNS SRV code for nss_ldap before nss_ldap-198 allows remote attackers to cause a denial of service and possibly execute arbitrary code.


[CNNVD]PADL Software nss_ldap DNS查询应答拒绝服务攻击漏洞(CNNVD-200208-141)

        
        nss_ldap模块用于与LDAP服务器通信,可以查询和处理主机用户,用户组等信息的程序。
        nss_ldap模块错误验证被截断的DNS查询应答,远程攻击者可以利用这个漏洞进行拒绝服务攻击。
        nss_ldap没有正确检查由DNS查询返回而且被截断的应答数据,当处理截断的查询应答时可导致nss_ldap读取合法内存以外的地址,这将使nss_ldap崩溃,产生拒绝服务。看起来不能利用来执行任意指令,不过没有得到证实。
        

- 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: [--]
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-2002-0825
(官方数据源) MITRE
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2002-0825
(官方数据源) NVD
http://www.cnnvd.org.cn/vulnerability/show/cv_cnnvdid/CNNVD-200208-141
(官方数据源) CNNVD

- 其它链接及资源

http://www.padl.com/Articles/PotentialBufferOverflowin.html
(VENDOR_ADVISORY)  CONFIRM  http://www.padl.com/Articles/PotentialBufferOverflowin.html

- 漏洞信息

PADL Software nss_ldap DNS查询应答拒绝服务攻击漏洞
高危 边界条件错误
2002-08-12 00:00:00 2006-09-21 00:00:00
远程  
        
        nss_ldap模块用于与LDAP服务器通信,可以查询和处理主机用户,用户组等信息的程序。
        nss_ldap模块错误验证被截断的DNS查询应答,远程攻击者可以利用这个漏洞进行拒绝服务攻击。
        nss_ldap没有正确检查由DNS查询返回而且被截断的应答数据,当处理截断的查询应答时可导致nss_ldap读取合法内存以外的地址,这将使nss_ldap崩溃,产生拒绝服务。看起来不能利用来执行任意指令,不过没有得到证实。
        

- 公告与补丁

        厂商补丁:
        MandrakeSoft
        ------------
        MandrakeSoft已经为此发布了一个安全公告(MDKSA-2002:075)以及相应补丁:
        MDKSA-2002:075:nss_ldap update
        链接:
        http://www.linux-mandrake.com/en/security/2002/2002-075.php

        补丁下载:
        Updated Packages:
        Linux-Mandrake 7.2:
        ftp://download.sourceforge.net/pub/mirrors/mandrake/updates/7.2/RPMS/nss_ldap-202-1.2mdk.i586.rpm
        ftp://download.sourceforge.net/pub/mirrors/mandrake/updates/7.2/SRPMS/nss_ldap-202-1.2mdk.src.rpm
        Mandrake Linux 8.0:
        ftp://download.sourceforge.net/pub/mirrors/mandrake/updates/8.0/RPMS/nss_ldap-202-1.2mdk.i586.rpm
        ftp://download.sourceforge.net/pub/mirrors/mandrake/updates/8.0/SRPMS/nss_ldap-202-1.2mdk.src.rpm
        Mandrake Linux 8.0/PPC:
        ftp://download.sourceforge.net/pub/mirrors/mandrake/updates/ppc/8.0/RPMS/nss_ldap-202-1.2mdk.ppc.rpm
        ftp://download.sourceforge.net/pub/mirrors/mandrake/updates/ppc/8.0/SRPMS/nss_ldap-202-1.2mdk.src.rpm
        Mandrake Linux 8.1:
        ftp://download.sourceforge.net/pub/mirrors/mandrake/updates/8.1/RPMS/nss_ldap-202-1.1mdk.i586.rpm
        ftp://download.sourceforge.net/pub/mirrors/mandrake/updates/8.1/RPMS/pam_ldap-156-1.1mdk.i586.rpm
        ftp://download.sourceforge.net/pub/mirrors/mandrake/updates/8.1/SRPMS/nss_ldap-202-1.1mdk.src.rpm
        Mandrake Linux 8.1/IA64:
        ftp://download.sourceforge.net/pub/mirrors/mandrake/updates/ia64/8.1/RPMS/nss_ldap-202-1.1mdk.ia64.rpm
        ftp://download.sourceforge.net/pub/mirrors/mandrake/updates/ia64/8.1/RPMS/pam_ldap-156-1.1mdk.ia64.rpm
        ftp://download.sourceforge.net/pub/mirrors/mandrake/updates/ia64/8.1/SRPMS/nss_ldap-202-1.1mdk.src.rpm
        Mandrake Linux 8.2:
        ftp://download.sourceforge.net/pub/mirrors/mandrake/updates/8.2/RPMS/nss_ldap-202-1.1mdk.i586.rpm
        ftp://download.sourceforge.net/pub/mirrors/mandrake/updates/8.2/RPMS/pam_ldap-156-1.1mdk.i586.rpm
        ftp://download.sourceforge.net/pub/mirrors/mandrake/updates/8.2/SRPMS/nss_ldap-202-1.1mdk.src.rpm
        Mandrake Linux 8.2/PPC:
        ftp://download.sourceforge.net/pub/mirrors/mandrake/updates/ppc/8.2/RPMS/nss_ldap-202-1.1mdk.ppc.rpm
        ftp://download.sourceforge.net/pub/mirrors/mandrake/updates/ppc/8.2/RPMS/pam_ldap-156-1.1mdk.ppc.rpm
        ftp://download.sourceforge.net/pub/mirrors/mandrake/updates/ppc/8.2/SRPMS/nss_ldap-202-1.1mdk.src.rpm
        Mandrake Linux 9.0:
        ftp://download.sourceforge.net/pub/mirrors/mandrake/updates/9.0/RPMS/nss_ldap-202-1.1mdk.i586.rpm
        ftp://download.sourceforge.net/pub/mirrors/mandrake/updates/9.0/RPMS/pam_ldap-156-1.1mdk.i586.rpm
        ftp://download.sourceforge.net/pub/mirrors/mandrake/updates/9.0/SRPMS/nss_ldap-202-1.1mdk.src.rpm
        Single Network Firewall 7.2:
        ftp://download.sourceforge.net/pub/mirrors/mandrake/updates/snf7.2/RPMS/nss_ldap-202-1.2mdk.i586.rpm
        ftp://download.sourceforge.net/pub/mirrors/mandrake/updates/snf7.2/SRPMS/nss_ldap-202-1.2mdk.src.rpm
        上述升级软件还可以在下列地址中的任意一个镜像ftp服务器上下载:
        
        http://www.mandrakesecure.net/en/ftp.php

- 漏洞信息

14439
nss_ldap DNS SRV Code Remote Overflow
Remote / Network Access Input Manipulation
Loss of Integrity

- 漏洞描述

Unknown or Incomplete

- 时间线

2002-11-08 Unknow
Unknow Unknow

- 解决方案

Unknown or Incomplete

- 相关参考

- 漏洞作者

Unknown or Incomplete

- 漏洞信息

PADL Software nss_ldap DNS Buffer Overflow Vulnerability
Boundary Condition Error 6129
Yes No
2002-08-30 12:00:00 2009-07-11 06:07:00
Announced by PADL Software.

- 受影响的程序版本

Padl Software nss_ldap Build 85
+ RedHat Linux 6.1 sparc
+ RedHat Linux 6.1 i386
+ RedHat Linux 6.1 i386
+ RedHat Linux 6.1 alpha
+ RedHat Linux 6.1 alpha
Padl Software nss_ldap Build 194
+ Mandriva Linux Mandrake 9.0
Padl Software nss_ldap Build 192
Padl Software nss_ldap Build 191
Padl Software nss_ldap Build 190
Padl Software nss_ldap Build 189
Padl Software nss_ldap Build 188
Padl Software nss_ldap Build 187
Padl Software nss_ldap Build 186
Padl Software nss_ldap Build 185.3
Padl Software nss_ldap Build 185.2
Padl Software nss_ldap Build 185.1
Padl Software nss_ldap Build 185
Padl Software nss_ldap Build 184
Padl Software nss_ldap Build 183
Padl Software nss_ldap Build 181
Padl Software nss_ldap Build 180
Padl Software nss_ldap Build 173
+ Mandriva Linux Mandrake 8.2 ppc
+ Mandriva Linux Mandrake 8.2
Padl Software nss_ldap Build 172
+ Caldera OpenLinux Server 3.1.1
+ Caldera OpenLinux Server 3.1
+ Caldera OpenLinux Workstation 3.1.1
+ Caldera OpenLinux Workstation 3.1
+ Mandriva Linux Mandrake 8.1 ia64
+ Mandriva Linux Mandrake 8.1
Padl Software nss_ldap Build 122
+ MandrakeSoft Single Network Firewall 7.2
+ Mandriva Linux Mandrake 7.2
+ Mandriva Linux Mandrake 7.2
+ Mandriva Linux Mandrake 7.1
+ Mandriva Linux Mandrake 7.1
+ Mandriva Linux Mandrake 7.0
+ Mandriva Linux Mandrake 7.0
Padl Software nss_ldap Build 121
Padl Software nss_ldap Build 113
+ RedHat Linux 7.0
Padl Software nss_ldap Build 107
+ Mandriva Linux Mandrake 8.0 ppc
+ Mandriva Linux Mandrake 8.0
Padl Software nss_ldap Build 105
+ RedHat Linux 6.2 sparc
+ RedHat Linux 6.2 i386
+ RedHat Linux 6.2 i386
+ RedHat Linux 6.2 alpha
+ RedHat Linux 6.2 alpha
Padl Software nss_ldap Build 202
+ MandrakeSoft Single Network Firewall 7.2
+ Mandriva Linux Mandrake 9.0
+ Mandriva Linux Mandrake 8.2 ppc
+ Mandriva Linux Mandrake 8.2
+ Mandriva Linux Mandrake 8.1 ia64
+ Mandriva Linux Mandrake 8.1
+ Mandriva Linux Mandrake 8.0 ppc
+ Mandriva Linux Mandrake 8.0
+ Mandriva Linux Mandrake 7.2
Padl Software nss_ldap Build 199
Padl Software nss_ldap Build 198

- 不受影响的程序版本

Padl Software nss_ldap Build 202
+ MandrakeSoft Single Network Firewall 7.2
+ Mandriva Linux Mandrake 9.0
+ Mandriva Linux Mandrake 8.2 ppc
+ Mandriva Linux Mandrake 8.2
+ Mandriva Linux Mandrake 8.1 ia64
+ Mandriva Linux Mandrake 8.1
+ Mandriva Linux Mandrake 8.0 ppc
+ Mandriva Linux Mandrake 8.0
+ Mandriva Linux Mandrake 7.2
Padl Software nss_ldap Build 199
Padl Software nss_ldap Build 198

- 漏洞讨论

A buffer overflow condition has been reported in nss_ldap. When nss_ldap is configured without a value for the "host" parameter, it will attempt to configure itself using SRV DNS records. There is no bounds checking on data returned from the DNS server before it is copied into internal memory buffers. If it is of excessive length, a buffer overrun condition will occur. Operators of malicious DNS servers may exploit this condition to execute arbitrary code on target hosts. It may also be possible for attackers who do not control the DNS server to spoof malicious responses.

- 漏洞利用

Currently we are not aware of any exploits for this issue. If you feel we are in error or are aware of more recent information, please mail us at: vuldb@securityfocus.com <mailto:vuldb@securityfocus.com>.

- 解决方案

Mandrake has released an advisory (MDKSA-2002:075) containing upgrades which address this issue. Mandrake users should see the attached advisory for details on obtaining fixes.

This issue is present in versions of nss_ldap prior to 198. Users are advised to upgrade to a more recent version.


Padl Software nss_ldap Build 107

Padl Software nss_ldap Build 122

Padl Software nss_ldap Build 172

Padl Software nss_ldap Build 194

Padl Software nss_ldap Build 173

- 相关参考

     

     

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