CVE-2000-0976
CVSS4.6
发布时间 :2000-12-19 00:00:00
修订时间 :2008-09-05 16:22:20
NMCOE    

[原文]Buffer overflow in xlib in XFree 3.3.x possibly allows local users to execute arbitrary commands via a long DISPLAY environment variable or a -display command line parameter.


[CNNVD]Xfree缓冲区溢出漏洞(CNNVD-200012-173)

        XFree 3.3.x版本中的xlib存在缓冲区溢出漏洞。本地用户可能借助超长DISPLAY环境变量或-display命令行参数执行任意命令。

- CVSS (基础分值)

CVSS分值: 4.6 [中等(MEDIUM)]
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: 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)

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-2000-0976
(官方数据源) MITRE
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2000-0976
(官方数据源) NVD
http://www.cnnvd.org.cn/vulnerability/show/cv_cnnvdid/CNNVD-200012-173
(官方数据源) CNNVD

- 其它链接及资源

http://www.securityfocus.com/bid/1805
(VENDOR_ADVISORY)  BID  1805
http://archives.neohapsis.com/archives/bugtraq/2000-10/0211.html
(VENDOR_ADVISORY)  BUGTRAQ  20001012 another Xlib buffer overflow
http://www.iss.net/security_center/static/5751.php
(UNKNOWN)  XF  xfree-xlib-bo(5751)
ftp://patches.sgi.com/support/free/security/advisories/20020502-01-I
(UNKNOWN)  SGI  20020502-01-I

- 漏洞信息

Xfree缓冲区溢出漏洞
中危 缓冲区溢出
2000-12-19 00:00:00 2005-05-02 00:00:00
本地  
        XFree 3.3.x版本中的xlib存在缓冲区溢出漏洞。本地用户可能借助超长DISPLAY环境变量或-display命令行参数执行任意命令。

- 公告与补丁

        

- 漏洞信息 (20294)

XFree86 3.3.5/3.3.6 Xlib Display Buffer Overflow Vulnerability (EDBID:20294)
unix local
2000-10-12 Verified
0 Michal Zalewski
N/A [点击下载]
source: http://www.securityfocus.com/bid/1805/info

A vulnerability exists in xlib, the C language interface to the X Window System protocol. 

When applications linked to the xlib library are run, user-supplied values for the DISPLAY environment variable (and the command-line argument -display) are stored in buffers of predefined length. It is not verified that the amount data is within the predefined size limits before it is copied onto the stack during function calls. 

Consequently it is possible for users to overwrite stack variables such as the calling function's return address with arbitrary values that can alter the program's flow of execution. 

While this vulnerability permits only numeric characters to be written to the stack, a successful exploit of this vulnerability can lead to partial overwriting of addresses and local variables.

cwsys$ DISPLAY=:`perl -e '{print "0"x128}'` xterm
Segmentation fault
cwsys$		

- 漏洞信息

1613
XFree86 Xlib DISPLAY Environment Variable Local Overflow
Local Access Required Input Manipulation
Loss of Integrity
Exploit Public

- 漏洞描述

- 时间线

2000-10-12 Unknow
2000-10-12 Unknow

- 解决方案

Products

Unknown or Incomplete

- 相关参考

- 漏洞作者

Unknown or Incomplete
 

 

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