CVE-2004-2721
CVSS4.3
发布时间 :2004-12-31 00:00:00
修订时间 :2008-09-05 16:44:55
NMCO    

[原文]The CheckGroup function in openSkat VTMF before 2.1 generates public key pairs in which the "p" variable might not be prime, which allows remote attackers to determine the private key and decrypt messages.


[CNNVD]OpenSkat弱加密密钥生成漏洞(CNNVD-200412-1152)

        openSkat VTMF 2.1之前版本中的CheckGroup函数生成可能“p”变量不是主要变量的公钥对。远程攻击者可以确定私钥并解密消息。
        

- CVSS (基础分值)

CVSS分值: 4.3 [中等(MEDIUM)]
机密性影响: PARTIAL [很可能造成信息泄露]
完整性影响: NONE [不会对系统完整性产生影响]
可用性影响: NONE [对系统可用性无影响]
攻击复杂度: MEDIUM [漏洞利用存在一定的访问条件]
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]

- CWE (弱点类目)

CWE-310 [密码学安全问题]

- 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-2004-2721
(官方数据源) MITRE
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2004-2721
(官方数据源) NVD
http://www.cnnvd.org.cn/vulnerability/show/cv_cnnvdid/CNNVD-200412-1152
(官方数据源) CNNVD

- 其它链接及资源

http://www.securityfocus.com/bid/11667
(PATCH)  BID  11667
http://freshmeat.net/projects/openskat/?branch_id=36295&release_id=178549
(PATCH)  CONFIRM  http://freshmeat.net/projects/openskat/?branch_id=36295&release_id=178549
http://xforce.iss.net/xforce/xfdb/18049
(UNKNOWN)  XF  openskat-vtmf-weak-encryption(18049)
http://www.osvdb.org/11652
(UNKNOWN)  OSVDB  11652
http://securitytracker.com/id?1012181
(UNKNOWN)  SECTRACK  1012181

- 漏洞信息

OpenSkat弱加密密钥生成漏洞
中危 加密问题
2004-12-31 00:00:00 2007-10-10 00:00:00
远程  
        openSkat VTMF 2.1之前版本中的CheckGroup函数生成可能“p”变量不是主要变量的公钥对。远程攻击者可以确定私钥并解密消息。
        

- 公告与补丁

        The vendor has released an upgrade dealing with this issue.
        OpenSkat OpenSkat 1.1
        
        OpenSkat OpenSkat 1.2
        
        OpenSkat OpenSkat 1.3
        
        OpenSkat OpenSkat 1.4
        
        OpenSkat OpenSkat 1.5
        
        OpenSkat OpenSkat 1.6
        
        OpenSkat OpenSkat 1.7
        
        OpenSkat OpenSkat 1.8
        
        OpenSkat OpenSkat 1.9
        
        OpenSkat OpenSkat 2.0
        

- 漏洞信息

11652
openSkat VTMF CheckGroup() Randomization Error Private Key Disclosure
Remote / Network Access Cryptographic
Loss of Confidentiality
Exploit Unknown Vendor Verified

- 漏洞描述

OpenSkat contains a flaw that may allow a malicious user to crack the encryption built into the game. The issue is due to the fact that the CheckGroup() function does not properly ensure that the variable "p" contains a number which is prime, leading to a weak cryptographic key. It is possible that the flaw may allow decryption of game information, resulting in a loss of confidentiality.

- 时间线

2004-11-10 Unknow
Unknow Unknow

- 解决方案

Upgrade to version 2.1 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
 

 

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