CVE-2001-0955
CVSS7.2
发布时间 :2001-09-22 00:00:00
修订时间 :2016-10-17 22:13:56
NMCOS    

[原文]Buffer overflow in fbglyph.c in XFree86 before 4.2.0, related to glyph clipping for large origins, allows attackers to cause a denial of service and possibly gain privileges via a large number of characters, possibly through the web page search form of KDE Konqueror or from an xterm command with a long title.


[CNNVD]XTerm超长标题栏使X服务器崩溃(CNNVD-200109-122)

        
        XFree86是广泛应用的X窗口系统,由公众维护,并随多种*NIX操作系统一起发布。
        当将xterm的标题栏设置为一个超过9000字节的长字符串时,X server会崩溃。这允许恶意本地攻击者任意终止X服务器。
        

- CVSS (基础分值)

CVSS分值: 7.2 [严重(HIGH)]
机密性影响: COMPLETE [完全的信息泄露导致所有系统文件暴露]
完整性影响: COMPLETE [系统完整性可被完全破坏]
可用性影响: COMPLETE [可能导致系统完全宕机]
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)

cpe:/a:xfree86_project:x11r6:4.0.3
cpe:/a:xfree86_project:x11r6:4.0
cpe:/a:xfree86_project:x11r6:4.0.1

- 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-2001-0955
(官方数据源) MITRE
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2001-0955
(官方数据源) NVD
http://www.cnnvd.org.cn/vulnerability/show/cv_cnnvdid/CNNVD-200109-122
(官方数据源) CNNVD

- 其它链接及资源

http://cvsweb.xfree86.org/cvsweb/xc/programs/Xserver/fb/fbglyph.c
(UNKNOWN)  MISC  http://cvsweb.xfree86.org/cvsweb/xc/programs/Xserver/fb/fbglyph.c
http://marc.info/?l=bugtraq&m=100776624224549&w=2
(UNKNOWN)  BUGTRAQ  20011207 Crashing X
http://marc.info/?l=bugtraq&m=100784290015880&w=2
(UNKNOWN)  BUGTRAQ  20011208 Re: Crashing X
http://marc.info/?l=vuln-dev&m=100118958310463&w=2
(UNKNOWN)  VULN-DEV  20010922 XFree86 DOS / Buffer overflow local and remote.
http://www.securityfocus.com/bid/3657
(VENDOR_ADVISORY)  BID  3657
http://www.securityfocus.com/bid/3663
(VENDOR_ADVISORY)  BID  3663
http://www.xfree86.org/4.2.0/RELNOTES2.html#2
(UNKNOWN)  CONFIRM  http://www.xfree86.org/4.2.0/RELNOTES2.html#2
http://www.xfree86.org/security/
(UNKNOWN)  CONFIRM  http://www.xfree86.org/security/
http://xforce.iss.net/static/7673.php
(UNKNOWN)  XF  xfree86-konqueror-bo(7673)
http://xforce.iss.net/static/7683.php
(VENDOR_ADVISORY)  XF  xfree86-xterm-title-bo(7683)

- 漏洞信息

XTerm超长标题栏使X服务器崩溃
高危 边界条件错误
2001-09-22 00:00:00 2005-10-20 00:00:00
本地  
        
        XFree86是广泛应用的X窗口系统,由公众维护,并随多种*NIX操作系统一起发布。
        当将xterm的标题栏设置为一个超过9000字节的长字符串时,X server会崩溃。这允许恶意本地攻击者任意终止X服务器。
        

- 公告与补丁

        临时解决方法:
        如果您不能立刻安装补丁或者升级,CNNVD建议您采取以下措施以降低威胁:
        * 禁止不可信用户访问X server。
        厂商补丁:
        XFree86
        -------
        目前厂商还没有提供补丁或者升级程序,我们建议使用此软件的用户随时关注厂商的主页以获取最新版本:
        
        http://www.xfree86.org/

- 漏洞信息

13999
XFree86 xterm -title Parameter Overflow
Input Manipulation
Loss of Integrity

- 漏洞描述

Unknown or Incomplete

- 时间线

2001-12-08 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

XTerm Title Bar Buffer Overflow Vulnerability
Boundary Condition Error 3663
No Yes
2001-12-08 12:00:00 2009-07-11 09:06:00
This vulnerability was found by KF <dotslash@snosoft.com>, and announced via Bugtraq on December 8, 2001.

- 受影响的程序版本

XFree86 X11R6 4.0.3
+ RedHat Linux 7.1
XFree86 X11R6 4.0.1
+ RedHat Linux 7.0
XFree86 X11R6 4.0

- 漏洞讨论

XFree86 is a freely available implementation of the X Window System. It is maintained by public domain, and package with many Linux, Unix and Unix clone operating systems.

A problem could allow an attacker to overwrite stack variables, including the return address of the process. An excessively long string is supplied with the -title option of xterm results in a buffer overflow.

Since xterm is included on most systems as a setuid root executable, this makes it possible for a malicious local user to execute arbitrary code as root.

- 漏洞利用

Currently the SecurityFocus staff 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 &lt;mailto:vuldb@securityfocus.com&gt;.

- 解决方案

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: vuldb@securityfocus.com <mailto:vuldb@securityfocus.com>.

- 相关参考

     

     

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