发布时间 :2000-05-10 00:00:00
修订时间 :2008-09-10 15:04:35

[原文]Netscape 4.73 and earlier follows symlinks when it imports a new certificate, which allows local users to overwrite files of the user importing the certificate.

[CNNVD]Netscape 通信机 /tmp 符号链接漏洞(CNNVD-200005-040)

        Netscape 4.73和早期版本的符号链接在导入新蛋证书时存在漏洞,本地用户可以利用这个漏洞将自身的证书导入覆盖原有文件。

- CVSS (基础分值)

CVSS分值: 3.7 [轻微(LOW)]
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: HIGH [漏洞利用存在特定的访问条件]
攻击向量: LOCAL [漏洞利用需要具有物理访问权限或本地帐户]
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:/a:netscape:communicator:4.73Netscape Communicator 4.73
cpe:/a:netscape:communicator:4.6Netscape Communicator 4.6
cpe:/a:netscape:communicator:4.72Netscape Communicator 4.72
cpe:/a:netscape:communicator:4.51Netscape Communicator 4.51
cpe:/a:netscape:communicator:4.61Netscape Communicator 4.61
cpe:/a:netscape:communicator:4.5Netscape Communicator 4.5
cpe:/a:netscape:communicator:4.7Netscape Communicator 4.7

- 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)  BID  1201
(UNKNOWN)  BUGTRAQ  20000510 Possible symlink problems with Netscape 4.73

- 漏洞信息

Netscape 通信机 /tmp 符号链接漏洞
低危 竞争条件
2000-05-10 00:00:00 2005-05-02 00:00:00
        Netscape 4.73和早期版本的符号链接在导入新蛋证书时存在漏洞,本地用户可以利用这个漏洞将自身的证书导入覆盖原有文件。

- 公告与补丁

        Currently the SecurityFocus staff 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:

- 漏洞信息 (19912)

Netscape Communicator 4.5/4.51/4.6/4.61/4.7/4.72/4.73 /tmp Symlink Vulnerability (EDBID:19912)
multiple local
2000-05-10 Verified
0 foo
N/A [点击下载]

Netscape Communicator version 4.73 and prior may be susceptible to a /tmp file race condition when importing certificates. Netscape creates a /tmp file which is world readable and writable in /tmp, without calling stat() or fstat() on the file. As such, it is possible, should a user be able to predict the file name, to cause a symbolic link to be created, and followed elsewhere on the file system. 

Additionally, as the file is created mode 666 prior to being fchmod()'d to 600, there may be a window of opportunity for altering the contents of this file.

This issue has only been demonstrated on the Linux binary, for glibc. The sparc Solaris binary does not behave this way.

Predict the name of the temporary file.
ln -sf /elsewhere /tmp/<tmpfilename>

Alternately, a program which watches for the creation of these temporary files, opens them upon their creation, and alters the contents can be written.		

- 漏洞信息

Netscape Communicator /tmp Symlink Arbitrary File Manipulation
Local Access Required Race Condition
Loss of Integrity
Exploit Public

- 漏洞描述

- 时间线

2000-05-10 Unknow
2000-05-10 Unknow

- 解决方案


Unknown or Incomplete

- 相关参考

- 漏洞作者

Unknown or Incomplete