To: security-announce@list.sco.com, bugtraq@securityfocus.com,
From: please_reply_to_security@sco.com
Subject: OpenServer 5.0.6 OpenServer 5.0.7 : telnet client multiple issues
Date: Tue, 17 May 2005 13:07:39 -0700
Message-ID: <20050517130739.A6057@caldera.com.>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
User-Agent: Mutt/1.2.5i
X-Virus-Scanned: antivirus-gw at tyumen.ru
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1
______________________________________________________________________________
SCO Security Advisory
Subject: OpenServer 5.0.6 OpenServer 5.0.7 : telnet client multiple issues
Advisory number: SCOSA-2005.23
Issue date: 2005 May 17
Cross reference: sr893213 fz531456 erg712802 CAN-2005-0469 CAN-2005-0468
______________________________________________________________________________
1. Problem Description
Buffer overflow in the slc_add_reply function in various
BSD-based Telnet clients, when handling LINEMODE suboptions,
allows remote attackers to execute arbitrary code via a
reply with a large number of Set Local Character (SLC)
commands.
The Common Vulnerabilities and Exposures project (cve.mitre.org)
has assigned the name CAN-2005-0469 to this issue.
Heap-based buffer overflow in the env_opt_add function in telnet.c
for various BSD-based Telnet clients allows remote attackers to
execute arbitrary code via responses that contain a large number
of characters that require escaping, which consumers more memory
than allocated.
The Common Vulnerabilities and Exposures project (cve.mitre.org)
has assigned the name CAN-2005-0468 to this issue.
2. Vulnerable Supported Versions
System Binaries
----------------------------------------------------------------------
OpenServer 5.0.6 /usr/bin/telnet
OpenServer 5.0.7 /usr/bin/telnet
3. Solution
The proper solution is to install the latest packages.
4. OpenServer 5.0.6
4.1 First install oss646c or later
4.2 Location of oss646c
ftp://ftp.sco.com/pub/openserver5/oss646c/
4.3 Verification of oss646c
MD5 (VOL.000.000) = f19b6c6949f615316bfb075d249989e8
MD5 (VOL.000.001) = 341ff8553aecd2c7b0c2beaf83030d0f
MD5 (VOL.000.002) = 6e46708ad8029e12280d4f9ac60ab814
MD5 (VOL.000.003) = 2868b64a6a6db742adb3b485be645d7e
MD5 (VOL.000.004) = 1696fe1db9bb063827ee5e76e58dff84
MD5 (VOL.000.005) = f39da342f8af72fcaccdf478dca04109
MD5 (VOL.000.006) = 2b31611c8af7d2e7910d6e8e3cf701a6
MD5 (VOL.000.007) = d0175c0f4e3ed29435b1eab95609f8f4
MD5 (VOL.000.008) = aa9e8a525c341fed077f981b1dacb486
MD5 (VOL.000.009) = 8e023af67b57507824406bdda322079a
MD5 (VOL.000.010) = 2b46e8adba8ae0b64109f2069da978a2
4.4 Installation of oss646c
See ftp://ftp.sco.com/pub/openserver5/oss646c/oss646c.txt
4.5 Location of Fixed Binaries
ftp://ftp.sco.com/pub/updates/OpenServer/SCOSA-2005.23
4.6 Verification
MD5 (VOL.000.000) = 026a2e0cae4a5772e7916945f369cf91
md5 is available for download from
ftp://ftp.sco.com/pub/security/tools
4.7 Installing Fixed Binaries
Upgrade the affected binaries with the following sequence:
1) Download the VOL* files to a directory
2) Run the custom command, specify an install from media
images, and specify the directory as the location of the
images.
5. OpenServer 5.0.7
5.1 Location of Fixed Binaries
ftp://ftp.sco.com/pub/updates/OpenServer/SCOSA-2005.23
5.2 Verification
MD5 (VOL.000.000) = 026a2e0cae4a5772e7916945f369cf91
md5 is available for download from
ftp://ftp.sco.com/pub/security/tools
5.3 Installing Fixed Binaries
Upgrade the affected binaries with the following sequence:
1) Download the VOL* files to a directory
2) Run the custom command, specify an install from media
images, and specify the directory as the location of the
images.
6. References
Specific references for this advisory:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0469http://cve.mitre.org/cgi-bin/cvename.cgi?name=CAN-2005-0468
SCO security resources:
http://www.sco.com/support/security/index.html
SCO security advisories via email
http://www.sco.com/support/forums/security.html
This security fix closes SCO incidents sr893213 fz531456
erg712802.
7. Disclaimer
SCO is not responsible for the misuse of any of the information
we provide on this website and/or through our security
advisories. Our advisories are a service to our customers
intended to promote secure installation and use of SCO
products.
8. Acknowledgments
SCO would like to thank Gal Delalleau and iDEFENSE
______________________________________________________________________________
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.4.1 (SCO/SYSV)
iD8DBQFCiksZaqoBO7ipriERAhzOAJ0SOcMqq8w8+ZxbVegzhzJN/H8kuwCdHCXB
IJBBPqCa4YHjH+bKNKGP2E4=
=K/6l
-----END PGP SIGNATURE-----
