发布时间 :2005-10-25 12:02:00
修订时间 :2011-03-07 21:25:17

[原文]Stack-based buffer overflow in (1) backupsh and (2) authsh in SCO Openserver 5.0.7 allows local users to execute arbitrary code via a long HOME environment variable.

[CNNVD]SCO OpenServer Backupsh本地溢出漏洞(CNNVD-200510-202)

        SCO OpenServer是中小企业业务最流行的UNIX服务器平台,backupsh工具是OpenServer所捆绑的标准二进制程序。
        SCO OpenServer的backupsh工具中存在本地缓冲区溢出漏洞。本地攻击者可以向"HOME"环境变量提供特制的字符串,溢出栈缓冲区,导致以组备份的权限执行任意代码。

- 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)


- 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  15160
(UNKNOWN)  IDEFENSE  20051024 SCO Openserver authsh 'Home' Buffer Overflow Vulnerability
(UNKNOWN)  IDEFENSE  20051024 SCO Openserver authsh 'Home' Buffer Overflow Vulnerability

- 漏洞信息

SCO OpenServer Backupsh本地溢出漏洞
中危 缓冲区溢出
2005-10-25 00:00:00 2006-03-28 00:00:00
        SCO OpenServer是中小企业业务最流行的UNIX服务器平台,backupsh工具是OpenServer所捆绑的标准二进制程序。
        SCO OpenServer的backupsh工具中存在本地缓冲区溢出漏洞。本地攻击者可以向"HOME"环境变量提供特制的字符串,溢出栈缓冲区,导致以组备份的权限执行任意代码。

- 公告与补丁


- 漏洞信息

SCO OpenServer backupsh Local Overflow
Local Access Required Input Manipulation
Loss of Integrity
Exploit Unknown Vendor Verified

- 漏洞描述

A local overflow exists in SCO OpenServer. The 'backupsh' utility fails to perform proper bounds checking resulting in a stack-based buffer overflow. With a specially crafted request, a malicious user can cause arbitrary code execution resulting in a loss of integrity.

- 时间线

2005-10-20 Unknow
Unknow 2005-10-20

- 解决方案

Upgrade to version 5.0.7 (2005-10-20) or higher, as it has been reported to fix this vulnerability. Note that this flaw was fixed in the 2005-10-20 release without a change in version number. An upgrade is required as there are no known workarounds.

- 相关参考

- 漏洞作者

- 漏洞信息

SCO OpenServer Backupsh Local Buffer Overflow Vulnerability
Boundary Condition Error 15160
No Yes
2005-10-20 12:00:00 2009-07-12 05:56:00
Discovery is credited to iDEFENSE.

- 受影响的程序版本

SCO Open Server 5.0.7

- 漏洞讨论

The 'backupsh' utility is prone to a local buffer-overflow vulnerability.

The vulnerability presents itself when the utility processes excessive data, which may corrupt process memory. The specific details about this issue are not currently available.

A successful attack allows arbitrary machine code execution with group backup privileges.

OpenServer 5.0.7 is reported prone to this issue.

The 'authsh' utility is also vulnerable to this issue; successful exploitation could result in an attacker gaining group auth privileges.

- 漏洞利用

Currently we 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:

- 解决方案

SCO has released advisory SCOSA-2005.41 to address this issue. Please see the referenced advisory for more information about obtaining and applying fixes.

SCO Open Server 5.0.7

- 相关参考