阿里云漏洞库

漏洞描述

Linux Kernel是开放源码操作系统Linux所使用的内核。 Linux kernel中kernel/exit.c文件中的do_exit函数没有正确处理KERNEL_DS get_fs值。本地用户可以通过利用(1)BUG，(2)空指针解引用，或者(3)页面错误绕过预设的access_ok限制，覆盖任意内核内存地址，并获取特权。

解决建议

用户可参考如下供应商提供的安全公告获得补丁信息：http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=33dd94ae1ccbfb7bf0fb6c692bc3d1c4269e6177

参考链接
http://archives.neohapsis.com/archives/fulldisclosure/2010-12/0086.html
http://blog.nelhage.com/2010/12/cve-2010-4258-from-dos-to-privesc/
http://code.google.com/p/chromium-os/issues/detail?id=10234
http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git%3Ba=commit%3...
http://googlechromereleases.blogspot.com/2011/01/chrome-os-beta-channel-update.html
http://lists.fedoraproject.org/pipermail/package-announce/2010-December/052513.html
http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00000.html
http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00001.html
http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00004.html
http://lists.opensuse.org/opensuse-security-announce/2011-01/msg00007.html
http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00000.html
http://lists.opensuse.org/opensuse-security-announce/2011-02/msg00002.html
http://marc.info/?l=linux-kernel&m=129117048916957&w=2
http://openwall.com/lists/oss-security/2010/12/02/2
http://openwall.com/lists/oss-security/2010/12/02/3
http://openwall.com/lists/oss-security/2010/12/02/4
http://openwall.com/lists/oss-security/2010/12/02/7
http://openwall.com/lists/oss-security/2010/12/08/4
http://openwall.com/lists/oss-security/2010/12/08/5
http://openwall.com/lists/oss-security/2010/12/08/9
http://openwall.com/lists/oss-security/2010/12/09/14
http://openwall.com/lists/oss-security/2010/12/09/4
http://secunia.com/advisories/42745
http://secunia.com/advisories/42778
http://secunia.com/advisories/42801
http://secunia.com/advisories/42932
http://secunia.com/advisories/43056
http://secunia.com/advisories/43291
http://www.kernel.org/pub/linux/kernel/v2.6/ChangeLog-2.6.36.2
http://www.mandriva.com/security/advisories?name=MDVSA-2011:029
http://www.vupen.com/english/advisories/2010/3321
http://www.vupen.com/english/advisories/2011/0012
http://www.vupen.com/english/advisories/2011/0124
http://www.vupen.com/english/advisories/2011/0213
http://www.vupen.com/english/advisories/2011/0298
http://www.vupen.com/english/advisories/2011/0375
https://bugzilla.redhat.com/show_bug.cgi?id=659567
https://lkml.org/lkml/2010/12/1/543

受影响软件情况

1
#	类型	厂商	产品	版本	影响面
	运行在以下环境
	系统	fedoraproject	fedora	13	-
	运行在以下环境
	系统	linux	linux_kernel	*		Up to (excluding) 2.6.36.2
	运行在以下环境
	系统	opensuse	opensuse	11.2	-
	运行在以下环境
	系统	opensuse	opensuse	11.3	-
	运行在以下环境
	系统	opensuse_11.2	kernel	*		Up to (excluding) 2.6.31.14-0.6.1
	运行在以下环境
	系统	opensuse_11.3	kernel	*		Up to (excluding) 2.6.34.7-0.7.1
	运行在以下环境
	系统	suse	linux_enterprise_desktop	10	-
	运行在以下环境
	系统	suse	linux_enterprise_desktop	11	-
	运行在以下环境
	系统	suse	linux_enterprise_real_time_extension	11	-
	运行在以下环境
	系统	suse	linux_enterprise_server	10	-
	运行在以下环境
	系统	suse	linux_enterprise_server	11	-
	运行在以下环境
	系统	suse	linux_enterprise_server	9	-
	运行在以下环境
	系统	suse	linux_enterprise_software_development_kit	10	-
	运行在以下环境
	系统	suse_11	kernel-default	*		Up to (excluding) 3.0.13-0.27

攻击路径

本地
攻击复杂度

困难
权限要求

无需权限
影响范围

全局影响
EXP成熟度

POC 已公开
补丁情况

官方补丁
数据保密性

数据泄露
数据完整性

传输被破坏
服务器危害

无影响
全网数量

N/A

CWE-ID	漏洞类型
CWE-269	特权管理不恰当

中危 Linux kernel本地特权提升漏洞

漏洞描述

解决建议

参考链接

受影响软件情况