Multiple OpenSSH/OpenSSL Vulnerabilities Update on IRIX
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______________________________________________________________________________
SGI Security Advisory
Title : Multiple OpenSSH/OpenSSL Vulnerabilities Update
Number : 20030904-02-P
Date : December 3, 2003
Reference : CERT CA-2003-24
Reference : CVE CAN-2003-0693 CAN-2003-0695 CAN-2003-0682 (OpenSSH)
Reference : CVE CAN-2003-0786 CAN-2003-0787 (PAM and OpenSSH)
Reference : CVE CAN-2003-0543 CAN-2003-0544 CAN-2003-0545 (OpenSSL)
Reference : CVE CAN-2003-0851 (OpenSSL ASN.1)
Reference : SGI BUGs 900744 899663 (OpenSSH)
Reference : SGI BUGs 900564 904644 (OpenSSL)
Reference : SGI BUGs 901671 901706 901710 (Updates)
Fixed in : IRIX 6.5.22 and patches for IRIX 6.5.19-6.5.21
______________________________________________________________________________
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 provides the information in this Security Advisory on an "AS-IS" basis
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,
special, exemplary, incidental or consequential damages of any kind arising
from your use of, failure to use or improper use of any of the instructions
or information in this Security Advisory.
______________________________________________________________________________
- --------------
- --- Update ---
- --------------
This is an update to SGI Security Advisory 20030904-01-P.
The original OpenSSH and OpenSSL packages did not have incremented
version numbers, so it was difficult to determine if a system was
vulnerable or fixed after the packages were installed. (SGI BUG 901671)
IRIX 6.5.20 and above include Kerberos. IRIX 6.5.19 does not have Kerberos,
so there was a conflict with the OpenSSL package. Patches are being
released to address this problem on IRIX 6.5.19. (SGI BUG 901706)
There was an additional OpenSSL ASN.1 vulnerability reported by:
http://www.uniras.gov.uk/vuls/2003/006489/openssl2.htm
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0851
which has been fixed by these updated patches. (SGI BUG 904644)
- -----------------------
- --- Issue Specifics ---
- -----------------------
It has been reported that OpenSSH/OpenSSL that ships with IRIX has several
security vulnerabilities that may lead to root access on vulnerable systems.
1) buffer.c vulnerability fixed in OpenSSH 3.7 (CAN-2003-0693)
http://marc.theaimsgroup.com/?l=bugtraq&m=106373247528528&w=2
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0693
2) More buffer management vulnerabilities fixed in OpenSSH 3.7.1 (CAN-2003-0695)
http://www.openssh.com/txt/buffer.adv
http://www.cert.org/advisories/CA-2003-24.html
http://www.kb.cert.org/vuls/id/333628
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0695
3) Openwall's "memory" security fixes to OpenSSH 3.7.1 (CAN-2003-0682)
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0682
4) ssh-keysign cores dump on IRIX (SGI BUG 899663)
5) Multiple OpenSSL vulnerabilities in ASN.1 parsing
http://www.openssl.org/news/secadv_20030930.txt
http://www.uniras.gov.uk/vuls/2003/006489/openssl.htm
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0543
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0544
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0545
Please note that the OpenSSH which ships with IRIX is NOT vulnerable
to the two recent PAM vulnerabilities found in portable OpenSSH 3.7/3.7.1:
http://www.openssh.com/txt/sshpam.adv
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0786
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2003-0787
* However, the Freeware OpenSSH from http://freeware.sgi.com/
is PAM enabled and possibly vulnerable to these issues.
SGI has investigated the issue and recommends the following steps for
neutralizing the exposure. It is HIGHLY RECOMMENDED that these measures
be implemented on ALL vulnerable SGI systems.
These vulnerabilities have been corrected in future releases of IRIX.
- --------------
- --- Impact ---
- --------------
OpenSSH client is installed by default on IRIX 6.5.19 and above. OpenSSH
server is provided on IRIX 6.5.19 and above, but not installed by default.
OpenSSL libraries are installed by default on IRIX 6.5.19 and above
To determine the version of OpenSSH you are running, execute the
following command:
% versions -b openssh openssl
This will return a result similar to the following output:
I = Installed, R = Removed
Name Date Description
I openssh 09/16/2003 OpenSSH server and client tools, 3.6.1p2
I openssl 09/16/2003 openssl libraries, 0.9.7b
If the output is similar to the above, then OpenSSH/OpenSSL are installed
and the system may be vulnerable unless patched.
- ----------------------------
- --- Temporary Workaround ---
- ----------------------------
There is no effective workaround available for these vulnerabilities.
SGI recommends upgrading to IRIX 6.5.22 or installing the appropriate
patches.
- ----------------
- --- Solution ---
- ----------------
SGI has provided a series of patches for these vulnerabilities. Our
recommendation is to upgrade to IRIX 6.5.22, or install the appropriate
patches.
SGI Freeware team has also provided an updated OpenSSH 3.7.1p2 package
available from http://freeware.sgi.com/Dist/fw_openssh-3.7.1p2.tardist
Freeware is not supported by SGI.
OS Version Vulnerable? Patch # Other Actions
- ---------- ----------- ------- -------------
IRIX 6.5.19m yes 5362 Notes 1 & 2
IRIX 6.5.19f yes 5362 Notes 1 & 2
IRIX 6.5.20m yes 5405 Notes 1 & 2
IRIX 6.5.20f yes 5405 Notes 1 & 2
IRIX 6.5.21m yes 5363 Notes 1 & 2
IRIX 6.5.21f yes 5363 Notes 1 & 2
IRIX 6.5.22 no Notes 1 & 2
NOTES
1) If you have not received an IRIX 6.5.X CD for IRIX 6.5, contact
your SGI Support Provider or visit URL: http://support.sgi.com/
2) Install the required patch(es) based on your operating release.
##### Patch File Checksums ####
The actual patch will be a tar file containing the following files:
Filename: README.patch.5362
Algorithm #1 (sum -r): 08697 9 README.patch.5362
Algorithm #2 (sum): 9584 9 README.patch.5362
MD5 checksum: 648E54CF2F596B14754A55BAEC60D4D1
Filename: patchSG0005362
Algorithm #1 (sum -r): 00644 9 patchSG0005362
Algorithm #2 (sum): 35504 9 patchSG0005362
MD5 checksum: BE764909D184D5BEAECC94E043D23DD8
Filename: patchSG0005362.idb
Algorithm #1 (sum -r): 46379 341 patchSG0005362.idb
Algorithm #2 (sum): 33666 341 patchSG0005362.idb
MD5 checksum: 0C7F3BAB71A95530D50023AB06FBC86C
Filename: patchSG0005362.openssh_man
Algorithm #1 (sum -r): 55192 291 patchSG0005362.openssh_man
Algorithm #2 (sum): 61501 291 patchSG0005362.openssh_man
MD5 checksum: 43DEC1544C12792B204B45CE44ED0C63
Filename: patchSG0005362.openssh_sw
Algorithm #1 (sum -r): 03650 4080 patchSG0005362.openssh_sw
Algorithm #2 (sum): 35524 4080 patchSG0005362.openssh_sw
MD5 checksum: 24EC1366E5B021FF02393F6CA95B5BC8
Filename: patchSG0005362.openssl_man
Algorithm #1 (sum -r): 02618 2359 patchSG0005362.openssl_man
Algorithm #2 (sum): 14996 2359 patchSG0005362.openssl_man
MD5 checksum: 2376774791FCE5680AF9DCBDEF25C959
Filename: patchSG0005362.openssl_sw
Algorithm #1 (sum -r): 19445 9813 patchSG0005362.openssl_sw
Algorithm #2 (sum): 28327 9813 patchSG0005362.openssl_sw
MD5 checksum: 53890E5CBE2ECFD1FB4A640A3E7EDD0D
Filename: README.patch.5363
Algorithm #1 (sum -r): 20016 8 README.patch.5363
Algorithm #2 (sum): 39948 8 README.patch.5363
MD5 checksum: E49DF4FF468BA3279FB68198F77EC754
Filename: patchSG0005363
Algorithm #1 (sum -r): 01509 4 patchSG0005363
Algorithm #2 (sum): 477 4 patchSG0005363
MD5 checksum: 3BC22E303DE7038C218318CC45B8D047
Filename: patchSG0005363.idb
Algorithm #1 (sum -r): 08920 7 patchSG0005363.idb
Algorithm #2 (sum): 3872 7 patchSG0005363.idb
MD5 checksum: 12FDBDAC9B88C2A7DF5C0199DBEC823D
Filename: patchSG0005363.openssh_sw
Algorithm #1 (sum -r): 25243 3990 patchSG0005363.openssh_sw
Algorithm #2 (sum): 62195 3990 patchSG0005363.openssh_sw
MD5 checksum: B6A76D90A75ED3A4833CDE1160355405
Filename: patchSG0005363.openssl_sw
Algorithm #1 (sum -r): 49172 6722 patchSG0005363.openssl_sw
Algorithm #2 (sum): 30923 6722 patchSG0005363.openssl_sw
MD5 checksum: 8A20A369CE05B3212CD086B21F2290D3
Filename: README.patch.5405
Algorithm #1 (sum -r): 55551 9 README.patch.5405
Algorithm #2 (sum): 9918 9 README.patch.5405
MD5 checksum: ACB4D526DA0735CE9769DF1063B8404C
Filename: patchSG0005405
Algorithm #1 (sum -r): 50297 9 patchSG0005405
Algorithm #2 (sum): 34949 9 patchSG0005405
MD5 checksum: 87334D425A325C51852B2F15FFB7737E
Filename: patchSG0005405.idb
Algorithm #1 (sum -r): 43781 341 patchSG0005405.idb
Algorithm #2 (sum): 31743 341 patchSG0005405.idb
MD5 checksum: 753F735C29585EABD739DE65A633C3CD
Filename: patchSG0005405.openssh_man
Algorithm #1 (sum -r): 53881 291 patchSG0005405.openssh_man
Algorithm #2 (sum): 15235 291 patchSG0005405.openssh_man
MD5 checksum: 5C45134C85409C0B1C3FCD3D71742A49
Filename: patchSG0005405.openssh_sw
Algorithm #1 (sum -r): 62942 4077 patchSG0005405.openssh_sw
Algorithm #2 (sum): 2173 4077 patchSG0005405.openssh_sw
MD5 checksum: ED908D5304C6BC6B44DC468255561F46
Filename: patchSG0005405.openssl_man
Algorithm #1 (sum -r): 56650 2427 patchSG0005405.openssl_man
Algorithm #2 (sum): 36163 2427 patchSG0005405.openssl_man
MD5 checksum: 8F45B002FB00AE0FE2F86741FE0217F6
Filename: patchSG0005405.openssl_sw
Algorithm #1 (sum -r): 22315 9916 patchSG0005405.openssl_sw
Algorithm #2 (sum): 14853 9916 patchSG0005405.openssl_sw
MD5 checksum: ED425E33ADDE30EB27277B5F8D7E1C5C
- ------------------------
- --- Acknowledgments ----
- ------------------------
SGI wishes to thank OpenSSH.org, OpenSSL.org, Openwall, WM-data and UNIRAS
for their assistance in this matter.
- -------------
- --- Links ---
- -------------
SGI Security Advisories can be found at:
http://www.sgi.com/support/security/ and
ftp://patches.sgi.com/support/free/security/advisories/
SGI Security Patches can be found at:
http://www.sgi.com/support/security/ and
ftp://patches.sgi.com/support/free/security/patches/
SGI patches for IRIX can be found at the following patch servers:
http://support.sgi.com/ and ftp://patches.sgi.com/
SGI freeware updates for IRIX can be found at:
http://freeware.sgi.com/
SGI patches and RPMs for Linux can be found at:
http://support.sgi.com
SGI patches for Windows NT or 2000 can be found at:
http://support.sgi.com/
IRIX 5.2-6.4 Recommended/Required Patch Sets can be found at:
http://support.sgi.com/ and ftp://patches.sgi.com/support/patchset/
IRIX 6.5 Maintenance Release Streams can be found at:
http://support.sgi.com/
IRIX 6.5 Software Update CDs can be obtained from:
http://support.sgi.com/
The primary SGI anonymous FTP site for security advisories and patches is
patches.sgi.com. Security advisories and patches are located under the URL
ftp://patches.sgi.com/support/free/security/
For security and patch management reasons, ftp.sgi.com (mirrors
patches.sgi.com security FTP repository) lags behind and does not do a
real-time update.
- -----------------------------------------
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- -----------------------------------------
If there are questions about this document, email can be sent to
security-info@xxxxxxxx
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