ftp://patches.sgi.com/support/free/security/advisories/20050701-01-P.asc
 
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______________________________________________________________________________
                           SGI Security Advisory
 
Title:      arshell vulnerability in arrayd 
Number:     20050701-01-P 
Date:       July 1, 2005
Reference:  SGI BUG 937936, CVE CAN-2005-1859
Fixed in:   Patches 10181, 10182 and 10185  
______________________________________________________________________________
 
SGI provides this information freely to the SGI user community for its 
consideration, interpretation, implementation and use.  SGI recommends 
that this information be acted upon as soon as possible.  SGI reserves
the right to change or update this Security Advisory without notice.
 
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only, and disclaims all warranties with respect thereto, express, implied 
or otherwise, including, without limitation, any warranty of merchantability 
or fitness for a particular purpose.  In no event shall SGI be liable for 
any loss of profits, loss of business, loss of data or for any indirect, 
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from your use of, failure to use or improper use of any of the instructions 
or information in this Security Advisory.
______________________________________________________________________________
 
- -----------------------
- --- Issue Specifics ---
- -----------------------
 
While investigating arrayd, a vulnerability in arshell was found internally
affecting SGI ProPack 3 with Service Pack 5 and 6, and SGI ProPack 4.
The vulnerability can lead to a root compromise.
 
SGI has assigned CVE CAN-2005-1859 to this issue:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-1859
 
The vulnerability in arshell was introduced in SGI ProPack 3 with Service
Pack 5 and above. Older Service Packs of SGI ProPack 3 and SGI IRIX are
not vulnerable.
 
SGI has investigated the issue and recommends the following steps for
resolving this issue.  It is HIGHLY RECOMMENDED that these measures
be implemented on ALL vulnerable SGI systems.
 
 
- --------------
- --- Impact ---
- --------------
 
SGI bug 937936 was filed to track this issue:
 
  The arshell command in the Array Service package in SGI ProPack
  contains an exploit which allows any user to start a shell as root
  on any host in the configured cluster or array.
 
  This patch prevents users from changing from non-root to root when
  using the arshell command. 
 
SGI IRIX is not vulnerable. SGI ProPack 3 with Service Pack 5 and above
is vulnerable.
- -
 
- ----------------
- --- Solution ---
- ----------------
 
SGI has provided a series of patches for these vulnerabilities
and recommends that all affected operating systems install the
appropriate patch.
 
OS Version          Vulnerable?     Patch #      Other Actions
- ----------          -----------     -------      -------------
SGI IRIX               no
SGI ProPack 3          no
SGI ProPack 3 SP 1     no
SGI ProPack 3 SP 2     no
SGI ProPack 3 SP 3     no
SGI ProPack 3 SP 4     no
SGI ProPack 3 SP 5     yes          10181
SGI ProPack 3 SP 6     yes          10185
SGI ProPack 4          yes          10182
 
Patches for SGI ProPack can be obtained from http://support.sgi.com/
 
 
- -------------
- --- Links ---
- -------------
 
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- -----------------------------------------
- --- SGI Security Information/Contacts ---
- -----------------------------------------
 
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______________________________________________________________________________
 
      This information is provided freely to all interested parties
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