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Á¦¸ñ [Çʵ¶] Bash ÀÓÀÇ ÄÚµå ½ÇÇà Ãë¾àÁ¡ ¾÷µ¥ÀÌÆ® ±Ç°í Á¶È¸¼ö 13,572°Ç


1. °³¿ä


¾È³çÇϼ¼¿ä. °íµµÈ£½ºÆÃÀÔ´Ï´Ù.

¸®´ª½º °è¿­ µîÀÇ ¿î¿µÃ¼Á¦¿¡¼­ »ç¿ëÁßÀÎ GNU Bash¿¡¼­ ¹ß»ýÇÏ´Â ÀÓÀÇ Äڵ带 ½ÇÇàÇÏ´Â Ãë¾àÁ¡

(CVE-2014-6271, CVE-2014-7169)ÀÌ ¹ß°ßµÇ¾î º¸¾È ¾÷µ¥ÀÌÆ®¸¦ ¹ßÇ¥ÇÏ¿´½À´Ï´Ù.

 

2. Ãë¾àÁ¡ Á¤º¸


CVE-Number: CVE-2014-6271, CVE-2014-7169

¿µÇâÀ» ¹Þ´Â ¼ÒÇÁÆ®¿þ¾î : GNU Bash(Bourn Again Shell)

¿µÇâÀ» ¹Þ´Â ½Ã½ºÅÛ : GNU Bash¸¦ »ç¿ëÇÏ´Â Linux°è¿­ OS

 

3.Ãë¾àÁ¡ È®ÀÎ ¹æ¹ý


 

CVE-2014-6271

CVE-2014-7169

È®ÀÎ Bash Shell ÀÔ·Â

#env x='() { :;}; echo vulnerable' bash -c "echo this is a test"

cd /tmp; rm -f /tmp/echo; env 'x=() { (a)=>\' bash -c "echo date"; cat /tmp/echo

Ãë¾à ÇÒ °æ¿ì ¸®ÅÏ ¸Þ½ÃÁö

vulerable

this is a test

bash: x: line 1: syntax error near unexpected token `='

bash: x: line 1: `'

bash: error importing function definition for `x'

Fri Sep 26 11:49:58 GMT 2014

¾÷µ¥ÀÌÆ® ÀÌÈÄ ¸®ÅÏ ¸Þ¼¼Áö

This is a test

date

cat: /tmp/echo: No such file or directory

 

4. ÇØ°á¹æ¹ý


update ´Â yumÀ¸·Î update ÁøÇà

 

#yum update bash –y

 

ÇØ´ç³»¿ë¿¡ ´ëÇؼ­ ±Ã±ÝÇÑ ³»¿ëÀÌ ÀÖÀ¸½Ã¸é

 

¾Æ·¡ Âü°í»çÀÌÆ® ¸µÅ©¸¦ Âü°í ÇϽðí

¹®ÀÇ ¹× ¿äû»çÇ×ÀÌ ÀÖÀ¸½Ã¸é 1´ë1 ¹®ÀÇ·Î Á¢¼Ó °èÁ¤Á¤º¸¿Í ÇÔ²² ¿äûÇØÁֽøé

½Å¼ÓÇÏ°Ô Ã³¸®ÇØ µå¸®°Ú½À´Ï´Ù.

 

 

Ç×»ó ³ë·ÂÇÏ´Â °íµµÈ£½ºÆÃÀÌ µÇ°Ú½À´Ï´Ù. °¨»çÇÕ´Ï´Ù.

 

[Âü°í»çÀÌÆ®]

 

°ü·Ã±â»ç : http://www.ddaily.co.kr/news/article.html?no=122715

CentOS : http://lists.centos.org/pipermail/centos/2014-September/146099.html

Ubuntu : http://www.ubuntu.com/usn/usn-2362-1/

Redhat : https://access.redhat.com/solutions/1207723

Debian : https://www.debian.org/security/2014/dsa-3032