发布时间 :1999-01-29 00:00:00
修订时间 :2008-09-10 15:04:14

[原文]The debug option in Caldera Linux smail allows remote attackers to execute commands via shell metacharacters in the -D option for the rmail command.

[CNNVD]Caldera OpenLinux 'smail -D'命令漏洞(CNNVD-199901-059)

        Caldera Linux smail中的调试选项存在漏洞。远程攻击者通过用于rmail命令的-D选项中的shell元字符执行命令。

- CVSS (基础分值)

CVSS分值: 10 [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: [--]
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  1268

- 漏洞信息

Caldera OpenLinux 'smail -D'命令漏洞
危急 访问验证错误
1999-01-29 00:00:00 2005-05-02 00:00:00
        Caldera Linux smail中的调试选项存在漏洞。远程攻击者通过用于rmail命令的-D选项中的shell元字符执行命令。

- 公告与补丁

        Update the smail package.
        Caldera OpenLinux 1.0
        Caldera OpenLinux 1.1
        Caldera OpenLinux 1.2
        Caldera OpenLinux 1.3

- 漏洞信息

Caldera Linux smail Package Arbitrary File Overwrite
Local Access Required Authentication Management
Loss of Confidentiality, Loss of Integrity
Exploit Public

- 漏洞描述

Caldera OpenLinux contains a flaw that may allow a malicious user to gain access to unauthorized privileges. The issue is triggered when submitting a UUCP job which includes the rmail command specifying a debug file to be overwritten. This flaw may lead to a loss of confidentiality and/or integrity.

- 时间线

1999-01-29 Unknow
1999-01-29 Unknow

- 解决方案

Upgrade to smail-3.2-5 packages or higher, as it has been reported to fix this vulnerability. An upgrade is required as there are no known workarounds.

- 相关参考

- 漏洞作者

Unknown or Incomplete

- 漏洞信息

Caldera OpenLinux 'smail -D' Command Vulnerability
Access Validation Error 1268
No Yes
1999-01-29 12:00:00 2007-07-16 09:36:00

- 受影响的程序版本

Caldera OpenLinux 1.3
Caldera OpenLinux 1.2
Caldera OpenLinux 1.1
Caldera OpenLinux 1.0

- 漏洞讨论

According to the Caldera advisory (CSSA-1999:001.0), smail's -D option names the debug file to use. If an attacker submits a UUCP job containing the following rmail invocation:

rmail -N -D /usr/lib/uucp/.rhosts -oMs "joe\nhostname user\n" uucp

where '\n' is a newline, and 'hostname' and 'user' specify the attacking host and user, then 'smail' will happily append the following to the UUCP '.rhosts' file:

rmail: Debugging started: pid=25919

write_log:Received FROM:uucp HOST:joe
hostname user
... some more lines ...

The attacker can then 'rsh' into the target host and try to exploit the UUCP account (e.g. by replacing the 'uux' binary).

Note that this hole is also exploitable locally; all you have to do is call 'uux rmail ....' to make it work.

- 漏洞利用

Currently we are not aware of any working exploits for this issue. If you feel we are in error or if you are aware of more recent information, please mail us at:

- 解决方案

Update the smail package.

Caldera OpenLinux 1.0

Caldera OpenLinux 1.1

Caldera OpenLinux 1.2

Caldera OpenLinux 1.3

- 相关参考