CVE-2003-0877
CVSS4.6
发布时间 :2003-11-03 00:00:00
修订时间 :2008-09-05 16:35:29
NMCOS    

[原文]Mac OS X before 10.3 with core files enabled allows local users to overwrite arbitrary files and read core files via a symlink attack on core files that are created with predictable names in the /cores directory.


[CNNVD]Apple Mac OS X Core文件符号链接漏洞(CNNVD-200311-012)

        
        Mac OS X是一款使用在Mac机器上的操作系统,基于BSD系统。
        Apple Mac OS X不安全生成core文件,本地攻击者可以利用这个漏洞通过符号链接进行权限提升攻击。
        Core文件的建立在Mac OS X中默认是关闭的,如果在系统中允许生成core文件,属主为ROOT的进程会写core文件到/cores目录中,core文件的名称为core.PID(*),此文件属主为ROOT,设置权限是0400。由于/cores木默认全局可写,core文件名可预测,攻击者可以通过建立符号链接,指向系统重要文件,当应用程序生成CORE文件时,可导致系统文件被覆写,可能提升权限或进行拒绝服务攻击。
        

- 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)

cpe:/o:apple:mac_os_x:10.1.5Apple Mac OS X 10.1.5
cpe:/o:apple:mac_os_x:10.2.3Apple Mac OS X 10.2.3
cpe:/o:apple:mac_os_x:10.0.3Apple Mac OS X 10.0.3
cpe:/o:apple:mac_os_x:10.2Apple Mac OS X 10.2
cpe:/o:apple:mac_os_x:10.1.3Apple Mac OS X 10.1.3
cpe:/o:apple:mac_os_x:10.2.7Apple Mac OS X 10.2.7
cpe:/o:apple:mac_os_x:10.1.4Apple Mac OS X 10.1.4
cpe:/o:apple:mac_os_x:10.1Apple Mac OS X 10.1
cpe:/o:apple:mac_os_x:10.2.8Apple Mac OS X 10.2.8
cpe:/o:apple:mac_os_x:10.2.1Apple Mac OS X 10.2.1
cpe:/o:apple:mac_os_x:10.1.1Apple Mac OS X 10.1.1
cpe:/o:apple:mac_os_x:10.2.6Apple Mac OS X 10.2.6
cpe:/o:apple:mac_os_x:10.2.5Apple Mac OS X 10.2.5
cpe:/o:apple:mac_os_x:10.0.1Apple Mac OS X 10.0.1
cpe:/o:apple:mac_os_x:10.0.4Apple Mac OS X 10.0.4
cpe:/o:apple:mac_os_x:10.2.2Apple Mac OS X 10.2.2
cpe:/o:apple:mac_os_x:10.0.2Apple Mac OS X 10.0.2
cpe:/o:apple:mac_os_x:10.0Apple Mac OS X 10.0
cpe:/o:apple:mac_os_x:10.2.4Apple Mac OS X 10.2.4
cpe:/o:apple:mac_os_x:10.1.2Apple Mac OS X 10.1.2

- 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-2003-0877
(官方数据源) MITRE
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2003-0877
(官方数据源) NVD
http://www.cnnvd.org.cn/vulnerability/show/cv_cnnvdid/CNNVD-200311-012
(官方数据源) CNNVD

- 其它链接及资源

http://www.atstake.com/research/advisories/2003/a102803-1.txt
(VENDOR_ADVISORY)  ATSTAKE  A102803-1
http://xforce.iss.net/xforce/xfdb/13542
(UNKNOWN)  XF  macos-core-files-symlink(13542)
http://www.securityfocus.com/bid/8917
(UNKNOWN)  BID  8917
http://www.securityfocus.com/bid/8914
(VENDOR_ADVISORY)  BID  8914

- 漏洞信息

Apple Mac OS X Core文件符号链接漏洞
中危 配置错误
2003-11-03 00:00:00 2005-10-20 00:00:00
本地  
        
        Mac OS X是一款使用在Mac机器上的操作系统,基于BSD系统。
        Apple Mac OS X不安全生成core文件,本地攻击者可以利用这个漏洞通过符号链接进行权限提升攻击。
        Core文件的建立在Mac OS X中默认是关闭的,如果在系统中允许生成core文件,属主为ROOT的进程会写core文件到/cores目录中,core文件的名称为core.PID(*),此文件属主为ROOT,设置权限是0400。由于/cores木默认全局可写,core文件名可预测,攻击者可以通过建立符号链接,指向系统重要文件,当应用程序生成CORE文件时,可导致系统文件被覆写,可能提升权限或进行拒绝服务攻击。
        

- 公告与补丁

        厂商补丁:
        Apple
        -----
        Mac OS X 10.3已经修补这个问题:
        
        http://www.apple.com/macosx/

- 漏洞信息

7067
Apple Mac OS X Arbitrary File Overwrite via Core Files
Local Access Required Race Condition
Loss of Integrity
Exploit Public

- 漏洞描述

Mac OS X contains a flaw that may allow a malicious user to gain access to unauthorized privileges. The issue is triggered when core files are created with predictable names in a world-writable directory, allowing an attacker to create symbolic links to arbitrary files to be overwritten. This flaw may lead to a loss of integrity.

- 时间线

2003-10-28 Unknow
2003-10-28 Unknow

- 解决方案

Upgrade to version 10.3 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

- 漏洞信息

Apple Mac OS X Core File Symbolic Link Vulnerability
Configuration Error 8914
No Yes
2003-10-28 12:00:00 2009-07-11 11:56:00
Discovery credited to Dave G.

- 受影响的程序版本

Apple Mac OS X 10.2.8
Apple Mac OS X 10.2.7
Apple Mac OS X 10.2.6
Apple Mac OS X 10.2.5
Apple Mac OS X 10.2.4
Apple Mac OS X 10.2.3
Apple Mac OS X 10.2.2
Apple Mac OS X 10.2.1
Apple Mac OS X 10.2
Apple Mac OS X 10.1.5
Apple Mac OS X 10.1.4
Apple Mac OS X 10.1.3
Apple Mac OS X 10.1.2
Apple Mac OS X 10.1.1
Apple Mac OS X 10.1
Apple Mac OS X 10.1
Apple Mac OS X 10.0.4
Apple Mac OS X 10.0.3
Apple Mac OS X 10.0.2
Apple Mac OS X 10.0.1
Apple Mac OS X 10.0
Apple Mac OS X 10.3

- 不受影响的程序版本

Apple Mac OS X 10.3

- 漏洞讨论

A problem has been identified in Mac OS X during the creation of core files. Because of this, a local attacker may be able to overwrite arbitrary root owned files.

- 漏洞利用

No exploit is required for this vulnerability.

- 解决方案

It has been reported that this issue is resolved in Mac OS X 10.3. This has not yet been confirmed by Apple or Symantec.
-----
Currently we 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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