CVE-2004-0370
CVSS2.1
发布时间 :2004-05-04 00:00:00
修订时间 :2008-09-10 15:25:59
NMCOP    

[原文]The setsockopt call in the KAME Project IPv6 implementation, as used in FreeBSD 5.2, does not properly handle certain IPv6 socket options, which could allow attackers to read kernel memory and cause a system panic.


[CNNVD]FreeBSD IPv6套接口选项处理本地内存泄露漏洞(CNNVD-200405-017)

        
        IPv6是新的Internet协议,设计用于替代IPv4,FreeBSD使用KAME项目IPv6实现。
        FreeBSD在处理部分IPv6套接口选项时存在问题,远程攻击者可以利用这个漏洞获得部分内存中的敏感信息。
        FreeBSD 5.2版本中的setsockopt(2)系统调用处理部分IPv6套接口选项中存在编程错误,可导致无需验证访问部分内存区域,使攻击者获得部分敏感信息。
        FreeBSD 5.2版本存在此漏洞,其他操作系统不受此漏洞影响。
        

- 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)

产品及版本信息(CPE)暂不可用

- 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-2004-0370
(官方数据源) MITRE
http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2004-0370
(官方数据源) NVD
http://www.cnnvd.org.cn/vulnerability/show/cv_cnnvdid/CNNVD-200405-017
(官方数据源) CNNVD

- 其它链接及资源

http://xforce.iss.net/xforce/xfdb/15662
(VENDOR_ADVISORY)  XF  freebsd-ipv6-dos(15662)
http://www.securityfocus.com/bid/9992
(UNKNOWN)  BID  9992
http://secunia.com/advisories/11233
(UNKNOWN)  SECUNIA  11233
ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-04:06.ipv6.asc
(UNKNOWN)  FREEBSD  FreeBSD-SA-04:06

- 漏洞信息

FreeBSD IPv6套接口选项处理本地内存泄露漏洞
低危 输入验证
2004-05-04 00:00:00 2005-10-20 00:00:00
本地  
        
        IPv6是新的Internet协议,设计用于替代IPv4,FreeBSD使用KAME项目IPv6实现。
        FreeBSD在处理部分IPv6套接口选项时存在问题,远程攻击者可以利用这个漏洞获得部分内存中的敏感信息。
        FreeBSD 5.2版本中的setsockopt(2)系统调用处理部分IPv6套接口选项中存在编程错误,可导致无需验证访问部分内存区域,使攻击者获得部分敏感信息。
        FreeBSD 5.2版本存在此漏洞,其他操作系统不受此漏洞影响。
        

- 公告与补丁

        临时解决方法:
        如果您不能立刻安装补丁或者升级,CNNVD建议您采取以下措施以降低威胁:
        * 通过如下步骤关闭IPv6:
        在内核配置文件中注释掉任何'INET6',重新编译内核:
        
        http://www.freebsd.org/handbook/kernelconfig.html

        * 如果所有不可信用户限制在jail(8)中,确保security.jail.socket_unixiproute_only sysctl设置为1及验证没有IPv6套接口当前打开:
        # sysctl security.jail.socket_unixiproute_only=1
        # sockstat -6
        厂商补丁:
        FreeBSD
        -------
        FreeBSD已经为此发布了一个安全公告(FreeBSD-SA-04:06)以及相应补丁:
        FreeBSD-SA-04:06:setsockopt(2) IPv6 sockets input validation error
        链接:ftp://ftp.freebsd.org/pub/FreeBSD/CERT/advisories/FreeBSD-SA-04:06.ipv6.asc
        补丁下载:
        FreeBSD FreeBSD 5.2 -RELEASE:
        FreeBSD Patch ipv6.patch
        ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/patches/SA-04:06/ipv6.patch
        FreeBSD Patch ipv6.patch.asc
        ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/patches/SA-04:06/ipv6.patch.asc

- 漏洞信息 (F32975)

FreeBSD Security Advisory 2004.6 (PacketStormID:F32975)
2004-03-29 00:00:00
The FreeBSD Project,Katsuhisa ABE,Colin Percival  freebsd.org
advisory,kernel,local
freebsd
CVE-2004-0370
[点击下载]

FreeBSD Security Advisory FreeBSD-SA-04:06.ipv6 - Applications may manipulate the behavior of an IPv6 socket using the setsockopt(2) system call. This may allow a local attacker to read portions of kernel memory.

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    <div class="h1"><h1>FreeBSD Security Advisory 2004.6</h1></div>
<dl id="F32975" class="file first">
<dt><a class="ico text-plain" href="/files/download/32975/FreeBSD-SA-04%3A06.ipv6.txt" title="Size: 4 KB"><strong>FreeBSD Security Advisory 2004.6</strong></a></dt>
<dd class="datetime">Posted <a href="/files/date/2004-03-29/" title="15:46:00 UTC">Mar 29, 2004</a></dd>
<dd class="refer">Authored by <a href="/files/author/1243/" class="group">The FreeBSD Project</a>, <a href="/files/author/3192/" class="person">Katsuhisa ABE</a>, <a href="/files/author/3193/" class="person">Colin Percival</a> | Site <a href="http://www.freebsd.org/security/">freebsd.org</a></dd>
<dd class="detail"><p>FreeBSD Security Advisory FreeBSD-SA-04:06.ipv6 - Applications may manipulate the behavior of an IPv6 socket using the setsockopt(2) system call. This may allow a local attacker to read portions of kernel memory.</p></dd>
<dd class="tags"><span>tags</span> | <a href="/files/tags/advisory">advisory</a>, <a href="/files/tags/kernel">kernel</a>, <a href="/files/tags/local">local</a></dd>
<dd class="os"><span>systems</span> | <a href="/files/os/freebsd">freebsd</a></dd>
<dd class="cve"><span>advisories</span> | <a href="/files/cve/CVE-2004-0370">CVE-2004-0370</a></dd>
<dd class="md5"><span>MD5</span> | <code>b5aebf5d0593c20a8019ec6f67e94cbd</code></dd>
<dd class="act-links"><a href="/files/download/32975/FreeBSD-SA-04%3A06.ipv6.txt" title="Size: 4 KB" rel="nofollow">Download</a> | <a href="/files/favorite/32975/" class="fav" rel="nofollow">Favorite</a> | <a href="/files/32975/FreeBSD-Security-Advisory-2004.6.html">Comments <span>(0)</span></a></dd>
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<div class="h1"><h1>FreeBSD Security Advisory 2004.6</h1></div>
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<pre><code>-----BEGIN PGP SIGNED MESSAGE-----<br />Hash: SHA1<br /><br />=============================================================================<br />FreeBSD-SA-04:06.ipv6                                       Security Advisory<br />                                                          The FreeBSD Project<br /><br />Topic:          setsockopt(2) IPv6 sockets input validation error<br /><br />Category:       core<br />Module:         kernel<br />Announced:      2004-03-29<br />Credits:        Katsuhisa ABE, Colin Percival<br />Affects:        FreeBSD 5.2-RELEASE<br />Corrected:      2004-03-29 14:01:33 UTC (RELENG_5_2, 5.2.1-RELEASE-p4)<br />CVE Name:       CAN-2004-0370<br />FreeBSD only:   YES<br /><br />For general information regarding FreeBSD Security Advisories,<br />including descriptions of the fields above, security branches, and the<br />following sections, please visit<br /><URL:http://www.freebsd.org/security/>.<br /><br />I.   Background<br /><br />IPv6 is a new Internet Protocol, designed to replace (and avoid many of<br />the problems with) the current Internet Protocol (version 4).  FreeBSD<br />uses the KAME Project IPv6 implementation.<br /><br />Applications may manipulate the behavior of an IPv6 socket using the<br />setsockopt(2) system call.<br /><br />II.  Problem Description<br /><br />A programming error in the handling of some IPv6 socket options within<br />the setsockopt(2) system call may result in memory locations being<br />accessed without proper validation.  While the problem originates in<br />code from the KAME Project, it does not affect other operating systems.<br /><br />III. Impact<br /><br />It may be possible for a local attacker to read portions of kernel<br />memory, resulting in disclosure of sensitive information.  A local<br />attacker can cause a system panic.<br /><br />IV.  Workaround<br /><br />Do one of the following:<br /><br />1) Disable IPv6 entirely by following these steps:<br /><br />   - Remove or comment out any lines mentioning `INET6' from your<br />     kernel configuration file, and recompile your kernel as described<br />     in <URL:http://www.freebsd.org/handbook/kernelconfig.html>.<br /><br />   - Reboot your system.<br /><br />2) If all untrusted users are confined within a jail(8), ensure that<br />the security.jail.socket_unixiproute_only sysctl is set to 1 and<br />verify that no IPv6 sockets are currently open:<br /><br /># sysctl security.jail.socket_unixiproute_only=1<br /># sockstat -6<br /><br />This will restrict jailed processes to creating UNIX domain, IPv4, and<br />routing sockets, which are not vulnerable to this problem; note however<br />that processes inside a jail may still be able to inherit IPv6 sockets<br />from outside the jail, so this may not be sufficient for all systems.<br /><br />V.   Solution<br /><br />Do one of the following:<br /><br />1) Upgrade your vulnerable system to the RELENG_5_2 security branch<br />dated after the correction date.<br /><br />2) To patch your present system:<br /><br />a) Download the relevant patch from the location below, and verify the<br />detached PGP signature using your PGP utility.<br /><br /># fetch ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/patches/SA-04:06/ipv6.patch<br /># fetch ftp://ftp.FreeBSD.org/pub/FreeBSD/CERT/patches/SA-04:06/ipv6.patch.asc<br /><br />b) Execute the following commands as root:<br /><br /># cd /usr/src<br /># patch < /path/to/patch<br /><br />c) Recompile the kernel as described in<br /><URL:http://www.freebsd.org/handbook/kernelconfig.html> and reboot the<br />system.<br /><br />d) Install updated kernel headers.<br /><br /># cd /usr/src/include<br /># make install<br /><br />VI.  Correction details<br /><br />The following list contains the revision numbers of each file that was<br />corrected in FreeBSD.<br /><br />Branch                                                           Revision<br />  Path<br />- -------------------------------------------------------------------------<br />RELENG_5_2<br />  src/UPDATING                                                 1.282.2.12<br />  src/sys/netinet6/ip6_output.c                                  1.71.2.2<br />  src/sys/netinet/ip6.h                                          1.10.2.1<br />  src/sys/conf/newvers.sh                                       1.56.2.11<br />- -------------------------------------------------------------------------<br />-----BEGIN PGP SIGNATURE-----<br />Version: GnuPG v1.2.4 (FreeBSD)<br /><br />iD8DBQFAaC6kFdaIBMps37IRAiCBAJ9ATb8FTKysuJvwlU8E0YOArWwP1gCcCCpw<br />rK7VXiZuLwD1zZmBepSHCt4=<br />=FLqJ<br />-----END PGP SIGNATURE-----<br /></code></pre>
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- 漏洞信息

4668
FreeBSD KAME Project IPv6 setsockopt() DoS
Remote / Network Access Denial of Service
Loss of Availability

- 漏洞描述

FreeBSD contains a flaw due to the manner in which it implements KAME Project IPv6 code that may allow a remote denial of service. The issue is an input validation flaw in the "setsockopt()" system call when handling certain IPv6 socket options, and will result in loss of availability for the platform.

- 时间线

2004-03-29 Unknow
2004-03-29 Unknow

- 解决方案

Upgrade to version RELENG_5_2 security branch or higher, as it has been reported to fix this vulnerability. Also, FreeBSD has released a patch.

- 相关参考

- 漏洞作者

 

 

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