Apple Computer, Inc. Not Affected

Notified:  April 23, 2001 Updated: July 12, 2001

Status

Not Affected

Vendor Statement

Apple Mac OS X does not use IP Masquerading and is not susceptible to this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

The CERT/CC has no additional comments at this time.

Berkeley Software Design, Inc. Unknown

Notified:  April 23, 2001 Updated: July 16, 2001

Status

Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

The CERT/CC has no additional comments at this time.

Data General Unknown

Notified:  April 23, 2001 Updated: July 16, 2001

Status

Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

The CERT/CC has no additional comments at this time.

Debian Linux Unknown

Notified:  April 23, 2001 Updated: July 16, 2001

Status

Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

The CERT/CC has no additional comments at this time.

DEC Unknown

Notified:  April 23, 2001 Updated: July 12, 2001

Status

Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

The CERT/CC has no additional comments at this time.

FreeBSD, Inc. Unknown

Notified:  April 23, 2001 Updated: July 16, 2001

Status

Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

The CERT/CC has no additional comments at this time.

Fujitsu Unknown

Notified:  April 23, 2001 Updated: July 12, 2001

Status

Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

The CERT/CC has no additional comments at this time.

Hewlett-Packard Company Not Affected

Notified:  April 23, 2001 Updated: April 03, 2002

Status

Not Affected

Vendor Statement

We now have confirmed our original response that HP's IPFilter/9000 is NOT vulnerable to this security hole. HP's IPFilter/9000 is not in the core OS. So filtering and nat functionality is not part of the TCP/IP streams stack.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

Hewlett Packard has reported that HP Secure OS Software for Linux (Trusted Linux) is not vulnerable since it is based on the 2.4 kernel.

IBM Corporation Unknown

Notified:  April 23, 2001 Updated: July 16, 2001

Status

Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

The CERT/CC has no additional comments at this time.

Mandriva, Inc. Affected

Updated:  April 03, 2002

Status

Affected

Vendor Statement

Conectiva released Conectiva Linux Security Announcement CLSA-2000:72 (Portuguese) on 2000-06-08.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

The CERT/CC has no additional comments at this time.

NEC Corporation Unknown

Notified:  April 23, 2001 Updated: July 16, 2001

Status

Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

The CERT/CC has no additional comments at this time.

NeXT Unknown

Notified:  April 23, 2001 Updated: July 16, 2001

Status

Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

The CERT/CC has no additional comments at this time.

OpenBSD Unknown

Notified:  April 23, 2001 Updated: July 16, 2001

Status

Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

The CERT/CC has no additional comments at this time.

Red Hat, Inc. Unknown

Notified:  April 23, 2001 Updated: July 16, 2001

Status

Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

The CERT/CC has no additional comments at this time.

Sequent Computer Systems, Inc. Unknown

Notified:  April 23, 2001 Updated: July 16, 2001

Status

Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

The CERT/CC has no additional comments at this time.

SGI Unknown

Notified:  April 23, 2001 Updated: July 16, 2001

Status

Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

The CERT/CC has no additional comments at this time.

Siemens Nixdorf Unknown

Notified:  April 23, 2001 Updated: July 16, 2001

Status

Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

The CERT/CC has no additional comments at this time.

Sony Corporation Unknown

Notified:  April 23, 2001 Updated: July 16, 2001

Status

Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

The CERT/CC has no additional comments at this time.

Sun Microsystems, Inc. Not Affected

Notified:  April 23, 2001 Updated: July 12, 2001

Status

Not Affected

Vendor Statement

Solaris does not have this functionality and isn't vulnerable.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

The CERT/CC has no additional comments at this time.

SUSE Linux Affected

Updated:  April 02, 2002

Status

Affected

Vendor Statement

-----BEGIN PGP SIGNED MESSAGE----- SuSE Security Announcement Package: kernel < 2.2.15 Date: Wed, 17 May 2000 18:24:50 GMT Affected SuSE versions: 6.1 - 6.4 Vulnerability Type: bypass ipchains filter rules denial of service SuSE default package: yes Other affected systems: all linux versions using kernel 2.2.x and several stateful firewall packages A security hole was discovered in the package mentioned above. Please update as soon as possible or disable the service if you are using this software on your SuSE Linux installation(s). Other Linux distributions or operating systems might be affected as well, please contact your vendor for information about this issue. Please note that we provide this information on an "as-is" basis only. There is no warranty whatsoever and no liability for any direct, indirect or incidental damage arising from this information or the installation of the update package. 1. Problem Description The masquerading feature in the Linux kernel has got a vulnerability in the udp and ftp masquerading code which allows arbitary backward connections to be opened. Some denial of service were found. 2. Impact Remote users may bypass ipchains filter rules protecting the internal network. Users can crash the machine. 3. Solution Update the package from our FTP server. Please note that we provide a patched 2.2.14 kernel to ensure stability and not the 2.2.15 kernel. Please verify these md5 checksums of the updates before installing: (NOTE: the 6.4 updates fit 6.1 to 6.3 as well) 765e268875a7716f681c14389a1c9b9b ftp://ftp.suse.com/pub/suse/i386/update/6.4/kernel/k_deflt.rpm be6ee213f0cafd4dac5c51a2a8d100f0 ftp://ftp.suse.com/pub/suse/i386/update/6.4/kernel/k_eide.rpm b900eb9f47c94df5cc15721e5f96a58e ftp://ftp.suse.com/pub/suse/i386/update/6.4/kernel/k_i386.rpm 37deca6ee856c3242a13c2a24f32fc7f ftp://ftp.suse.com/pub/suse/i386/update/6.4/d1/lx_suse-2.2.14.SuSE-24.i386.rpm You can find updates on our ftp-Server: ftp://ftp.suse.com/pub/suse/i386/update for Intel processors ftp://ftp.suse.com/pub/suse/axp/update for Alpha processors or try the following web pages for a list of mirrors: http://www.suse.de/ftp.html http://www.suse.com/ftp_new.html Our webpage for patches: http://www.suse.de/patches/index.html Our webpage for security announcements: http://www.suse.de/security If you want to report vulnerabilities, please contact security@suse.de SuSE has got two free security mailing list services to which any interested party may subscribe: suse-security@suse.com - moderated and for general/linux/SuSE security discussions. All SuSE security announcements are sent to this list. suse-security-announce@suse.com - SuSE's announce-only mailing list. Only SuSE's security annoucements are sent to this list. To subscribe to the list, send a message to: To remove your address from the list, send a message to: Send mail to the following for info and FAQ for this list: This information is provided freely to everyone interested and may be redistributed provided that it is not altered in any way. Type Bits/KeyID Date User ID pub 2048/3D25D3D9 1999/03/06 SuSE Security Team - ------BEGIN PGP PUBLIC KEY BLOCK----- Version: 2.6.3i mQENAzbhLQQAAAEIAKAkXHe0lWRBXLpn38hMHy03F0I4Sszmoc8aaKJrhfhyMlOA BqvklPLE2f9UrI4Xc860gH79ZREwAgPt0pi6+SleNFLNcNFAuuHMLQOOsaMFatbz JR9i4m/lf6q929YROu5zB48rBAlcfTm+IBbijaEdnqpwGib45wE/Cfy6FAttBHQh 1Kp+r/jPbf1mYAvljUfHKuvbg8t2EIQz/5yGp+n5trn9pElfQO2cRBq8LFpf1l+U P7EKjFmlOq+Gs/fF98/dP3DfniSd78LQPq5vp8RL8nr/o2i7jkAQ33m4f1wOBWd+ cZovrKXYlXiR+Bf7m2hpZo+/sAzhd7LmAD0l09kABRG0JVN1U0UgU2VjdXJpdHkg VGVhbSA8c2VjdXJpdHlAc3VzZS5kZT6JARUDBRA24S1H5Fiyh7HKPEUBAVcOB/9b yHYji1/+4Xc2GhvXK0FSJN0MGgeXgW47yxDL7gmR4mNgjlIOUHZj0PEpVjWepOJ7 tQS3L9oP6cpj1Fj/XxuLbkp5VCQ61hpt54coQAvYrnT9rtWEGN+xmwejT1WmYmDJ xG+EGBXKr+XP69oIUl1E2JO3rXeklulgjqRKos4cdXKgyjWZ7CP9V9daRXDtje63 Om8gwSdU/nCvhdRIWp/Vwbf7Ia8iZr9OJ5YuQl0DBG4qmGDDrvImgPAFkYFzwlqo choXFQ9y0YVCV41DnR+GYhwl2qBd81T8aXhihEGPIgaw3g8gd8B5o6mPVgl+nJqI BkEYGBusiag2pS6qwznZiQEVAwUQNuEtBHey5gA9JdPZAQFtOAf+KVh939b0J94u v/kpg4xs1LthlhquhbHcKNoVTNspugiC3qMPyvSX4XcBr2PC0cVkS4Z9PY9iCfT+ x9WM96g39dAF+le2CCx7XISk9XXJ4ApEy5g4AuK7NYgAJd39PPbERgWnxjxir9g0 Ix30dS30bW39D+3NPU5Ho9TD/B7UDFvYT5AWHl3MGwo3a1RhTs6sfgL7yQ3U+mvq MkTExZb5mfN1FeaYKMopoI4VpzNVeGxQWIz67VjJHVyUlF20ekOz4kWVgsxkc8G2 saqZd6yv2EwqYTi8BDAduweP33KrQc4KDDommQNDOXxaKOeCoESIdM4p7Esdjq1o L0oixF12Cg== =pIeS - ------END PGP PUBLIC KEY BLOCK----- -----BEGIN PGP SIGNATURE----- Version: 2.6.3i Charset: noconv iQEVAwUBOSLptXey5gA9JdPZAQFAswf+L1yoW+eVDCmBDeBHbVqZMb+/X52dh391 jcQ4XAT5gnkuWpqyy7XhvFUqnh555SqNssdgtoqpGYdCoH9tmG4QOY/aK0oRcMee ttZfmqD/+SWJdS970sdr75t61/m/iqvVmLemtRnYgXjDOI2e1RgTTHK7eEvDgMlA F9eB1BPa4YsbtAtsh5HOPRRfgDUjbp5Cfss2mMNRwL1NEX3RkVug8dePM3zvQNVy S1+hCsMkuvHtzwGegsOh0Ix8DVDDDSMh1ZV7i6ECAaH1/10Vw7Osp0swEP1VkZ6/ nL1tZKA2kDtHpCtPi3Z4oQNbMdDuKAaFD/eLx7UvMdCjjnf8GbUNkA== =BFxK -----END PGP SIGNATURE-----

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

The CERT/CC has no additional comments at this time.

The Linux Kernel Archives Affected

Updated:  April 02, 2002

Status

Affected

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

Based on Linux kernel source code from The Linux Kernel Archives:

  • Linux kernels 2.2.0-pre5 to 2.2.14 enable UDP DLOOSE IP Masquerade behavior by default.
  • Linux kernels 2.2.15 to 2.2.20 disable UDP DLOOSE IP Masquerade behavior by default.
  • Linux kernels 2.4 and above do not use UDP DLOOSE IP Masquerade behavior since the netfilter/iptables subsystem tracks UDP sessions individually.

The SCO Group (SCO Linux) Unknown

Notified:  April 23, 2001 Updated: July 16, 2001

Status

Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

The CERT/CC has no additional comments at this time.

The SCO Group (SCO Unix) Unknown

Notified:  April 23, 2001 Updated: July 16, 2001

Status

Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

The CERT/CC has no additional comments at this time.

Unisys Unknown

Notified:  April 23, 2001 Updated: July 16, 2001

Status

Unknown

Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.

Addendum

The CERT/CC has no additional comments at this time.

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