CVE-2005-4783
CVSS2.1
发布时间 :2005-12-31 00:00:00
修订时间 :2008-09-05 16:57:49
NMCO    

[原文]kernfs_xread in kernfs_vnops.c in NetBSD before 20050831 does not check for a negative offset when reading the message buffer, which allows local users to read arbitrary kernel memory.


[CNNVD]NetBSD kernfs_vnops.c 本地漏洞(CNNVD-200512-901)

        NetBSD的20050831之前版本中的kernfs_vnops.c的kernfs_xread在读取消息缓冲区时未检查负偏移量,本地用户因此可以读取任意内核内存。

- CVSS (基础分值)

CVSS分值: 2.1 [轻微(LOW)]
机密性影响: PARTIAL [很可能造成信息泄露]
完整性影响: NONE [不会对系统完整性产生影响]
可用性影响: NONE [对系统可用性无影响]
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:1.6NetBSD 1.6

- 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-2005-4783
(官方数据源) MITRE
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2005-4783
(官方数据源) NVD
http://www.cnnvd.org.cn/vulnerability/show/cv_cnnvdid/CNNVD-200512-901
(官方数据源) CNNVD

- 其它链接及资源

http://www.packetstormsecurity.org/0601-advisories/NetBSD-SA2006-001.txt
(PATCH)  NETBSD  NetBSD-SA2006-001
http://www.osvdb.org/20729
(PATCH)  OSVDB  20729
http://securitytracker.com/id?1015132
(PATCH)  SECTRACK  1015132
http://releng.netbsd.org/cgi-bin/req-3.cgi?show=727
(PATCH)  CONFIRM  http://releng.netbsd.org/cgi-bin/req-3.cgi?show=727
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/miscfs/kernfs/kernfs_vnops.c.diff?r1=1.110&r2=1.111&f=h
(PATCH)  CONFIRM  http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/miscfs/kernfs/kernfs_vnops.c.diff?r1=1.110&r2=1.111&f=h
http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/miscfs/kernfs/kernfs_vnops.c
(PATCH)  CONFIRM  http://cvsweb.netbsd.org/bsdweb.cgi/src/sys/miscfs/kernfs/kernfs_vnops.c
http://mail-index.netbsd.org/netbsd-announce/2005/10/31/0000.html
(UNKNOWN)  MLIST  [netbsd-announce] 20051031 Announcing update 2.0.3 - source only

- 漏洞信息

NetBSD kernfs_vnops.c 本地漏洞
低危 未知
2005-12-31 00:00:00 2006-04-28 00:00:00
本地  
        NetBSD的20050831之前版本中的kernfs_vnops.c的kernfs_xread在读取消息缓冲区时未检查负偏移量,本地用户因此可以读取任意内核内存。

- 公告与补丁

        

- 漏洞信息

20729
NetBSD Message Buffer Negative Offset Arbitrary Kernel Memory Access
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 negative offsets are permitted while reading the message buffer, which will disclose arbitrary kernel memory segments resulting in a loss of confidentiality.

- 时间线

2005-10-31 Unknow
Unknow Unknow

- 解决方案

Upgrade to version 2.0.3 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

Unknown or Incomplete
 

 

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