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UNIRAS Brief - 552/03 - Two CIAC Security Advisories



 
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   UNIRAS (UK Govt CERT) Briefing Notice - 552/03 dated 03.10.03  Time: 10:10
 UNIRAS is part of NISCC(National Infrastructure Security Co-ordination Centre)
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  UNIRAS material is also available from its website at www.uniras.gov.uk and
         Information about NISCC is available from www.niscc.gov.uk
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Title
=====

Two CIAC Security Advisories:

1. Sun aspppls(1M) does not create the temporary file /tmp/.asppp.fifo safely

2. OpenSSH Buffer Management Error.

Detail
====== 

1. May be possible to overwrite or create any file on a Solaris 8 system due 
   to a security issue with aspppls(1M).

2. OpenSSH has announced an upgrade that fixes a buffer management error. When a
   function that expands the size of a buffer detects that the new size will be
   greater then 10Meg it generates a fatal error.
               


             __________________________________________________________

1.                     The U.S. Department of Energy
                   Computer Incident Advisory Capability
                           ___  __ __    _     ___
                          /       |     /_\   /
                          \___  __|__  /   \  \___
             __________________________________________________________

                             INFORMATION BULLETIN

   Sun aspppls(1M) does not create the temporary file /tmp/.asppp.fifo safely
                             [Sun Alert ID: 46903]

October 2, 2003 17:00 GMT                                         Number O-001
______________________________________________________________________________
PROBLEM:       May be possible to overwrite or create any file on a Solaris 8 
               system due to a security issue with aspppls(1M). 
PLATFORM:      SPARC Solaris 8, INTEL Solaris 8 
               (Note-Solaris 2.5.1, 2.6, 7, & 9 are not affected by this issue.) 
DAMAGE:        A unprivileged local user may gain unauthorized root 
               privileges. 
SOLUTION:      Apply upgrades or there are workarounds available. 
______________________________________________________________________________
VULNERABILITY  The risk is MEDIUM. It is possible for an attacker to gain 
ASSESSMENT:    unauthorized root privileges. 
______________________________________________________________________________
LINKS: 
 CIAC BULLETIN:      http://www.ciac.org/ciac/bulletins/o-001.shtml 
 ORIGINAL BULLETIN:                                                           
                     http://www.sunsolve.sun.com/pub-cgi/retrieve.pl?doc=fsalert%2F46903&zone_32=category%3Asecurity 
______________________________________________________________________________


2.


CIAC Bulletin N-151 has been updated to now include an additional link to the
Sun Alert ID: 56861 announcing they have released updated packages for Solaris 9.

             __________________________________________________________

                       The U.S. Department of Energy
                   Computer Incident Advisory Capability
                           ___  __ __    _     ___
                          /       |     /_\   /
                          \___  __|__  /   \  \___
             __________________________________________________________

                             INFORMATION BULLETIN

                        OpenSSH Buffer Management Error

September 17, 2003 17:00 GMT                                      Number N-151
[REVISED 22 Sept 2003]
[REVISED 23 Sept 2003]
[REVISED 1 Oct 2003]
[REVISED 2 Oct 2003]
______________________________________________________________________________
PROBLEM:       OpenSSH has announced an upgrade that fixes a buffer management 
               error. When a function that expands the size of a buffer 
               detects that the new size will be greater then 10Meg it 
               generates a fatal error. When the error is generated, the 
               function incorrectly sets the size of the allocated buffer to a 
               value larger than the actual allocation. The fatal error 
               processing routines will then attempt to deallocate more memory 
               than was allocated. 
PLATFORM:      All systems using versions of OpenSSH earlier than 3.7 
               Hewlett Packard HP-UX B.11.00, B.11.11, B.11.22 only with the
               T1471AA HP-UX Secure Sheel product installed.
               Mac OS X versions prior to 10.2.8
               IRIX 6.5.22
               SPARC Solaris 9
               x86 Solaris 9
DAMAGE:        Could possibly cause a system to crash. 
SOLUTION:      Upgrade to version 3.7.1 
               Download and install appropriate files from appropriate vendor.
______________________________________________________________________________
VULNERABILITY  The risk is LOW. There are no known exploits. We believe it is 
ASSESSMENT:    unlikely that this problem can be exploited. If it can be 
               exploited, it might be possible to crash a system that does not 
               use protected memory (Windows 95, 98, ME). On systems with 
               protected memory (UNIX, Linux, Windows NT, 2000, XP) you might 
               be able to crash ssh but it is already shutting down because of 
               the fatal error. 
______________________________________________________________________________
LINKS: 
 CIAC BULLETIN:      http://www.ciac.org/ciac/bulletins/n-151.shtml 
 ORIGINAL BULLETIN:  http://www.openssh.com/txt/buffer.adv 
 ADDITIONAL LINKS:   http://www.cert.org/advisories/CA-2003-24.html
                     https://rhn.redhat.com/errata/RHSA-2003-279.html
                     http://www.cisco.com/warp/public/707/cisco-sa-20030917-openssh.shtml
                     Visit HEWLETT PACKARD Subscription Service for:
                     HPSBUX0309-282 (SSRT3629)
                     Apple Security Advisory - Mac OS X 10.2.8 (APPLE-SA-2003-09-22)
                     http://net-security.org/advisory.php?id=2546
                     http://docs.info.apple.com/article.html?artnum=61798
                     SGI Security Advisory 20030904-01-P
                     http://www.sgi.com/support/security/advisories.html
                     Sun Alert ID: 56861
                     http://www.sunsolve.sun.com/pub-cgi/retrieve.pl?doc=fsalert%2F56861&zone_32=category%3Asecurity
______________________________________________________________________________








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UNIRAS wishes to acknowledge the contributions of CIAC for the information
contained in this Briefing. 
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This Briefing contains the information released by the original author. Some 
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<End of UNIRAS Briefing>
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