发布时间 :2003-08-18 00:00:00
修订时间 :2016-10-17 22:35:33

[原文]X Fontserver for Truetype fonts (xfstt) 1.4 allows remote attackers to cause a denial of service and possibly execute arbitrary code via a (1) FS_QueryXExtents8 or (2) FS_QueryXBitmaps8 packet, and possibly other types of packets, with a large num_ranges value, which causes an out-of-bounds array access.


        X Fontserver Truetype fonts用于对TrueType字体进行解析。

- CVSS (基础分值)

CVSS分值: 7.5 [严重(HIGH)]
机密性影响: [--]
完整性影响: [--]
可用性影响: [--]
攻击复杂度: [--]
攻击向量: [--]
身份认证: [--]

- CPE (受影响的平台与产品)


- 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)  BUGTRAQ  20030714 xfstt-1.4 vulnerability

- 漏洞信息

高危 输入验证
2003-08-18 00:00:00 2005-10-20 00:00:00
        X Fontserver Truetype fonts用于对TrueType字体进行解析。

- 公告与补丁


- 漏洞信息

TrueType Font Server for X11 (xfstt) Malformed Packet Remote Overflow
Remote / Network Access Input Manipulation
Loss of Integrity

- 漏洞描述

Unknown or Incomplete

- 时间线

2003-07-14 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

xfstt Denial Of Service Vulnerability
Input Validation Error 8182
Yes No
2003-07-14 12:00:00 2009-07-11 10:56:00
Disclosure credited to Jonathan Heusser.

- 受影响的程序版本

xfstt xfstt 1.4
xfstt xfstt 1.2.1
+ Debian Linux 3.0 sparc
+ Debian Linux 3.0 s/390
+ Debian Linux 3.0 ppc
+ Debian Linux 3.0 mipsel
+ Debian Linux 3.0 mips
+ Debian Linux 3.0 m68k
+ Debian Linux 3.0 ia-64
+ Debian Linux 3.0 ia-32
+ Debian Linux 3.0 hppa
+ Debian Linux 3.0 arm
+ Debian Linux 3.0 alpha

- 漏洞讨论

It has been reported that attackers may be able to crash an xfstt server by sending it a specially malformed packet. Reportedly, the working() function may not properly perform bounds checking on incoming packets prior to parsing headers and storing information in internal buffers. This may allow arbitrary data to be written to adjacent memory locations, possibly resulting in a denial of service condition against the server.

- 漏洞利用

It has been reported that a functional exploit for this vulnerability exists, but is not publicly available. It is also likely that this issue could be exploited with any number of available packet shaping tools.

- 解决方案

Debian has released a security advisory (DSA 360-1) that contains fixes to address this issue. Information relating to obtaining and applying fixes can be found in the referenced advisory.

xfstt xfstt 1.2.1

- 相关参考