CVE-2006-0145
CVSS4.6
发布时间 :2006-01-09 18:03:00
修订时间 :2008-09-05 16:58:28
NMCO    

[原文]The kernfs_xread function in kernfs in NetBSD 1.6 through 2.1, and OpenBSD 3.8, does not properly validate file offsets against negative 32-bit values that occur as a result of truncation, which allows local users to read arbitrary kernel memory and gain privileges via the lseek system call.


[CNNVD]NetBSD KernFS LSEEK Kernel内存泄露漏洞(CNNVD-200601-057)

        NetBSD是一款免费开放源代码的UNIX性质的操作系统。
        NetBSD对kernfs文件系统的lseek(2)系统调用没有正确的验证文件偏移,这样用户级非特权进程可以读取任意kernel内存位置,导致泄漏敏感信息。

- 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:netbsd:netbsd:2.0.3NetBSD 2.0.3
cpe:/o:netbsd:netbsd:2.0NetBSD 2.0
cpe:/o:netbsd:netbsd:2.1NetBSD 2.1
cpe:/o:netbsd:netbsd:1.6:betaNetBSD 1.6 Beta
cpe:/o:netbsd:netbsd:1.6.1NetBSD 1.6.1
cpe:/o:netbsd:netbsd:2.0.2NetBSD 2.0.2
cpe:/o:netbsd:netbsd:2.0.1NetBSD 2.0.1
cpe:/o:netbsd:netbsd:1.6NetBSD 1.6
cpe:/o:netbsd:netbsd:1.6.2NetBSD 1.6.2

- 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-2006-0145
(官方数据源) MITRE
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2006-0145
(官方数据源) NVD
http://www.cnnvd.org.cn/vulnerability/show/cv_cnnvdid/CNNVD-200601-057
(官方数据源) CNNVD

- 其它链接及资源

http://www.securityfocus.com/bid/16173
(PATCH)  BID  16173
http://www.securitylab.net/research/2006/02/advisory_netbsd_openbsd_kernfs.html
(VENDOR_ADVISORY)  MISC  http://www.securitylab.net/research/2006/02/advisory_netbsd_openbsd_kernfs.html
http://www.securityfocus.com/archive/1/archive/1/423827/100/0/threaded
(UNKNOWN)  BUGTRAQ  20060202 [SLAB] NetBSD / OpenBSD kernfs_xread patch evasion
http://www.osvdb.org/22293
(UNKNOWN)  OSVDB  22293
http://secunia.com/advisories/18712
(VENDOR_ADVISORY)  SECUNIA  18712
http://secunia.com/advisories/18388
(VENDOR_ADVISORY)  SECUNIA  18388
ftp://ftp.netbsd.org/pub/NetBSD/security/advisories/NetBSD-SA2006-001.txt.asc
(UNKNOWN)  NETBSD  NetBSD-SA2006-001
http://xforce.iss.net/xforce/xfdb/24035
(UNKNOWN)  XF  netbsd-kernfs-memory-disclosure(24035)
http://securityreason.com/securityalert/405
(UNKNOWN)  SREASON  405

- 漏洞信息

NetBSD KernFS LSEEK Kernel内存泄露漏洞
中危 输入验证
2006-01-09 00:00:00 2006-05-09 00:00:00
本地  
        NetBSD是一款免费开放源代码的UNIX性质的操作系统。
        NetBSD对kernfs文件系统的lseek(2)系统调用没有正确的验证文件偏移,这样用户级非特权进程可以读取任意kernel内存位置,导致泄漏敏感信息。

- 公告与补丁

        暂无数据

- 漏洞信息

22293
Multiple BSD kernfs lseek(2) Function Arbitrary Memory Disclosure
Local Access Required Information Disclosure
Loss of Confidentiality

- 漏洞描述

NetBSD contains a flaw that may lead to an unauthorized information disclosure. The issue is triggered when the lseek system call for the kernfs file system has insufficient bounds checking, which will disclose arbitrary memory information resulting in a loss of confidentiality.

- 时间线

2006-01-09 Unknow
Unknow Unknow

- 解决方案

Currently, there are no known upgrades or patches to correct this issue. It is possible to correct the flaw by implementing the following workaround: download 'kernfs_vnops.c' from CVS, then rebuild and reinstall the kernel.

- 相关参考

- 漏洞作者

 

 

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