Linux Kernel CIFS字符串转换多个缓冲区溢出漏洞

Linux Kernel CIFS字符串转换多个缓冲区溢出漏洞

发布日期：2009-05-14
更新日期：2009-05-18

受影响系统：

Linux kernel 2.6.29

描述：

--------------------------------------------------------------------------------
BUGTRAQ  ID: 34989
CVE(CAN) ID: CVE-2009-1633

Linux Kernel是开放源码操作系统Linux所使用的内核。

Linux Kernel的cifs处理代码通常将ucs2_le字符串（windows所使用的双字节编码方案）转换为本地NLS字符集。字符串转换例程仅接受由所要转换的宽字符数所指定的单个长度参数，因此假设目标缓冲区已足够大，但实际上特制的CIFS字符串仍可触发缓冲区溢出。

<*来源：Jeff Layton
链接：http://secunia.com/advisories/35107/
http://marc.info/?l=oss-security&m=124226897529946&w=2
*>
建议：
--------------------------------------------------------------------------------
厂商补丁：
Linux
-----

目前厂商已经发布了升级补丁以修复这个安全问题，请到厂商的主页下载：

http://git.kernel.org/linus/341060273232a2df0d1a7fa53abc661fcf22747c
http://git.kernel.org/linus/afe48c31ea5c74eaac58621ce1c85ae8187c4383
http://git.kernel.org/linus/18295796a30cada84e933d805072dc2248d54f98
http://git.kernel.org/linus/9e39b0ae8af46c83b85dae7ff5251911a80fce5a
http://git.kernel.org/linus/d185cda7712fd1d9e349174639d76eadc66679be
http://git.kernel.org/linus/2edd6c5b0517b9131ede9e74cb121898ccd73042
http://git.kernel.org/linus/20418acd6874792359b42c12d159f42f17593f34
http://git.kernel.org/linus/f58841666bc22e827ca0dcef7b71c7bc2758ce82
http://git.kernel.org/linus/460b96960d1946914e50316ffeefe7b41dddce91
http://git.kernel.org/linus/59140797c5817363087b0ffb46e6bb81a11fe0dc
http://git.kernel.org/linus/cc20c031bb067eb3280a1c4b5c42295093e24863
http://git.kernel.org/linus/066ce6899484d9026acd6ba3a8dbbedb33d7ae1b
http://git.kernel.org/linus/69f801fcaa03be83d58c564f00913b7c172808e4
http://git.kernel.org/linus/7fabf0c9479fef9fdb9528a5fbdb1cb744a744a4
http://git.kernel.org/linus/66345f50f070ae7412a28543ee197cb5eff73598
http://git.kernel.org/linus/d37dc42ab6f040b8f0f2962ab219c5b2accf748d
http://git.kernel.org/linus/7b0c8fcff47a885743125dd843db64af41af5a61
http://git.kernel.org/linus/968460ebd8006d55661dec0fb86712b40d71c413
http://git.kernel.org/linus/27b87fe52baba0a55e9723030e76fce94fabcea4