发布时间 :1990-05-09 00:00:00
修订时间 :2008-09-10 15:04:33

[原文]Buffer overflow in FreeBSD libmytinfo library allows local users to execute commands via a long TERMCAP environmental variable.

[CNNVD]FreeBSD libmytinfo缓冲区溢出漏洞(CNNVD-199005-003)

        FreeBSD libmytinfo库存在缓冲区溢出漏洞。本地用户可以借助一个超长TERMCAP环境变量执行命令。

- CVSS (基础分值)

CVSS分值: 7.5 [严重(HIGH)]
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: [--]
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:/o:freebsd:freebsd:3.1FreeBSD 3.1
cpe:/o:freebsd:freebsd:3.4FreeBSD 3.4
cpe:/o:freebsd:freebsd:3.2FreeBSD 3.2
cpe:/o:freebsd:freebsd:3.0FreeBSD 3.0
cpe:/o:freebsd:freebsd:3.3FreeBSD 3.3

- 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  1185

- 漏洞信息

FreeBSD libmytinfo缓冲区溢出漏洞
高危 缓冲区溢出
1990-05-09 00:00:00 2005-07-27 00:00:00
        FreeBSD libmytinfo库存在缓冲区溢出漏洞。本地用户可以借助一个超长TERMCAP环境变量执行命令。

- 公告与补丁

        FreeBSD FreeBSD 3.0
        FreeBSD FreeBSD 3.1
        FreeBSD FreeBSD 3.2
        FreeBSD FreeBSD 3.3
        FreeBSD FreeBSD 3.4

- 漏洞信息

FreeBSD libmytinfo TERMCAP Local Overflow
Local Access Required Input Manipulation
Loss of Integrity
Exploit Unknown

- 漏洞描述

A local overflow exists in libmytinfo, which is a part of the ncurses text-mode display library. It fails to validate input of the TERMCAP environment variable resulting in a buffer overflow. With a specially crafted request, an attacker can obtain escalated privileges resulting in a loss of integrity.

- 时间线

2000-04-24 Unknow
2000-04-24 Unknow

- 解决方案

Upgrade to FreeBSD 3.5 or higher, as it has been reported to fix this vulnerability. Or apply the patch (see external references). It is also possible to correct the flaw by implementing the following workarounds: Remove any setuid or setgid binary which is linked against libmytinfo (including statically linked), or remove set[ug]id privileges from the file as appropriate.

- 相关参考

- 漏洞作者

Unknown or Incomplete