CVE-2005-1057
CVSS7.5
发布时间 :2005-05-02 00:00:00
修订时间 :2009-03-04 00:32:17
NMCOS    

[原文]Cisco IOS 12.2T, 12.3 and 12.3T, when using Easy VPN Server XAUTH version 6 authentication, allows remote attackers to bypass authentication via a "malformed packet."


[CNNVD]Cisco IOS Easy VPN Server XAUTH可绕过认证漏洞(CNNVD-200505-746)

        Cisco IOS是Cisco网络设备所使用的互联网操作系统。
        Cisco IOS Easy VPN Server中存在认证绕过漏洞,可能允许远程攻击者绕过扩展认证(XAUTH),非授权访问网络资源。
        攻击者必须向UDP 500端口发送畸形的UDP报文,以完成XAUTH认证,非授权访问网络资源。
        

- 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)

cpe:/o:cisco:ios:12.3tCisco IOS 12.3T
cpe:/o:cisco:ios:12.2tCisco IOS 12.2T
cpe:/o:cisco:ios:12.3Cisco IOS 12.3

- OVAL (用于检测的技术细节)

oval:org.mitre.oval:def:5852Cisco Systems IOS Easy VPN Server xauth Extension Access Validation Vulnerability
*OVAL详细的描述了检测该漏洞的方法,你可以从相关的OVAL定义中找到更多检测该漏洞的技术细节。

- 官方数据库链接

http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2005-1057
(官方数据源) MITRE
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2005-1057
(官方数据源) NVD
http://www.cnnvd.org.cn/vulnerability/show/cv_cnnvdid/CNNVD-200505-746
(官方数据源) CNNVD

- 其它链接及资源

http://www.cisco.com/warp/public/707/cisco-sa-20050406-xauth.shtml
(VENDOR_ADVISORY)  CISCO  20050406 Vulnerabilities in the Internet Key Exchange Xauth Implementation

- 漏洞信息

Cisco IOS Easy VPN Server XAUTH可绕过认证漏洞
高危 设计错误
2005-05-02 00:00:00 2009-03-04 00:00:00
远程  
        Cisco IOS是Cisco网络设备所使用的互联网操作系统。
        Cisco IOS Easy VPN Server中存在认证绕过漏洞,可能允许远程攻击者绕过扩展认证(XAUTH),非授权访问网络资源。
        攻击者必须向UDP 500端口发送畸形的UDP报文,以完成XAUTH认证,非授权访问网络资源。
        

- 公告与补丁

        目前厂商已经发布了升级补丁以修复这个安全问题,补丁下载链接:
        http://www.cisco.com/warp/public/707/cisco-sa-20050406-xauth.shtml

- 漏洞信息

15304
Cisco IOS IKE XAUTH Malformed UDP Packet Authentication Bypass
Remote / Network Access Authentication Management
Loss of Integrity
Exploit Public

- 漏洞描述

Cisco IOS contains a flaw within the VPN server functionality that may allow a malicious user to bypass IKE authentication. The issue is triggered when a user has access to the shared group key for IKE Phase 1 and completes the Phase 1 negotiation allowing the user to send specially crafted UDP packets to the Cisco IOS VPN server. It is possible that the flaw may allow the remote user to bypass authentication after Phase 1 IKE negotiation resulting in a loss of integrity.

- 时间线

2005-04-06 Unknow
2005-04-06 Unknow

- 解决方案

Upgrade to applicable release train versions 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

Unknown or Incomplete

- 漏洞信息

Cisco IOS Easy VPN Server XAUTH Authentication Bypass Vulnerability
Design Error 13031
Yes No
2005-04-06 12:00:00 2009-07-12 11:57:00
This issue was reported by the vendor.

- 受影响的程序版本

Cisco IOS 12.3YK
Cisco IOS 12.3YJ
Cisco IOS 12.3YI
Cisco IOS 12.3YH
Cisco IOS 12.3YG
Cisco IOS 12.3YF
Cisco IOS 12.3YD
Cisco IOS 12.3YC
Cisco IOS 12.3YA
Cisco IOS 12.3XY
Cisco IOS 12.3XX
Cisco IOS 12.3XW
Cisco IOS 12.3XU
Cisco IOS 12.3XT
Cisco IOS 12.3XS
Cisco IOS 12.3XR
Cisco IOS 12.3XQ
Cisco IOS 12.3XN
Cisco IOS 12.3XM
Cisco IOS 12.3XL
Cisco IOS 12.3XK
Cisco IOS 12.3XJ
Cisco IOS 12.3XI
Cisco IOS 12.3XH
Cisco IOS 12.3XG
Cisco IOS 12.3XF
Cisco IOS 12.3XE
Cisco IOS 12.3XD
Cisco IOS 12.3XC
Cisco IOS 12.3XB
Cisco IOS 12.3XA
Cisco IOS 12.3T
Cisco IOS 12.3BW
Cisco IOS 12.3BC
Cisco IOS 12.3B
Cisco IOS 12.3
Cisco IOS 12.2ZP
Cisco IOS 12.2ZN
Cisco IOS 12.2ZL
Cisco IOS 12.2ZK
Cisco IOS 12.2ZJ
Cisco IOS 12.2ZJ
Cisco IOS 12.2ZJ
Cisco IOS 12.2ZH
Cisco IOS 12.2ZH
Cisco IOS 12.2ZG
Cisco IOS 12.2ZG
Cisco IOS 12.2ZF
Cisco IOS 12.2ZF
Cisco IOS 12.2ZE
Cisco IOS 12.2ZE
Cisco IOS 12.2ZD
Cisco IOS 12.2ZD
Cisco IOS 12.2ZC
Cisco IOS 12.2ZC
Cisco IOS 12.2ZB
Cisco IOS 12.2ZB
Cisco IOS 12.2YY
Cisco IOS 12.2YY
Cisco IOS 12.2YX
Cisco IOS 12.2YX
Cisco IOS 12.2YW
Cisco IOS 12.2YW
Cisco IOS 12.2YW
Cisco IOS 12.2YV
Cisco IOS 12.2YV
Cisco IOS 12.2YU
Cisco IOS 12.2YU
Cisco IOS 12.2YT
Cisco IOS 12.2YT
Cisco IOS 12.2YR
Cisco IOS 12.2YQ
Cisco IOS 12.2YP
Cisco IOS 12.2YP
Cisco IOS 12.2YN
Cisco IOS 12.2YN
Cisco IOS 12.2YM
Cisco IOS 12.2YM
Cisco IOS 12.2YL
Cisco IOS 12.2YJ
Cisco IOS 12.2YH
Cisco IOS 12.2YG
Cisco IOS 12.2YF
Cisco IOS 12.2YD
Cisco IOS 12.2YB
Cisco IOS 12.2YA
Cisco IOS 12.2XZ
Cisco IOS 12.2XW
Cisco IOS 12.2XM
Cisco IOS 12.2XL
Cisco IOS 12.2XK
Cisco IOS 12.2XK
Cisco IOS 12.2XK
Cisco IOS 12.2XJ
Cisco IOS 12.2XJ
Cisco IOS 12.2T
Cisco IOS 12.2SY
Cisco IOS 12.2SY
Cisco IOS 12.2SXD
Cisco IOS 12.2SXB
Cisco IOS 12.2SXA
Cisco IOS 12.2SX
Cisco IOS 12.2SU
Cisco IOS 12.2JK
Cisco IOS 12.2CZ
Cisco IOS 12.2CY
Cisco IOS 12.2CX
Cisco IOS 12.2CX
Cisco IOS 12.2CX
Cisco IOS 12.2BZ
Cisco IOS 12.2BY
Cisco IOS 12.2BX
Cisco IOS 12.2BC
Cisco IOS 12.2B

- 漏洞讨论

Cisco IOS Easy VPN Server is reported prone to an authentication bypass vulnerability. This issue can allow remote attackers to bypass Extended Authentication (XAUTH) and gain unauthorized access to resources.

An unauthorized attacker may send certain malformed UDP packets to UDP port 500 to complete XAUTH authentication and gain unauthorized access to network resources.

- 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

Cisco has provided a fix matrix for IOS in the attached advisory. Please refer to the advisory for further information. Cisco fixes may be obtained by customers through the regular update channels.

- 相关参考

     

     

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