exploit the possibilities
Home Files News &[SERVICES_TAB]About Contact Add New

screenos-sshv1-2.txt

screenos-sshv1-2.txt
Posted Aug 5, 2004
Authored by Mark Ellzey Thomas | Site juniper.net

Juniper Networks NetScreen Advisory 59147 - A malicious person who can connect to the SSHv1 service on a Juniper Networks Netscreen firewall can crash the device before having to authenticate. Upon execution of the attack, the firewall will reboot or hang, which will prevent traffic to flow through the device.

tags | advisory
systems | juniper
SHA-256 | 9bcd70260d6dde060190ee50a49684a445f003622c74f3d12acdfc64e035c869

screenos-sshv1-2.txt

Change Mirror Download
-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

Title: Juniper Networks NetScreen Advisory 59147
Date: 3 August 2004
Version: 1


Impact:
Remote crash of ScreenOS via the SSHv1 service


Affected Products:
Juniper Networks NetScreen firewalls with SSHv1 enabled


Unaffected Products:
Juniper Networks NetScreen firewalls with SSH disabled or SSHv2 enabled


Max Risk: High


Summary:
The Juniper Networks NetScreen firewall SSHv1 service implementation has
a bug which allows an attacker to crash ScreenOS.


Details:
A malicious person who can connect to the SSHv1 service on a Juniper
Networks Netscreen firewall can crash the device before having to
authenticate. Upon execution of the attack, the firewall will reboot or
hang, which will prevent traffic to flow through the device.


Recommended Actions:
Customers have a number of choices to mitigate the attack:

Option 1: Upgrade the firewall to one of the following versions of
ScreenOS:

Version Availability
5.0.0r8 Now
5.0.0r8.1 Now
4.0.0r13 Now
4.0.1r11 Now
4.0.3r8 Now
4.0.1-Dial2r5 Now
4.0.1-SBRr5 Now
4.0.1-IGMP3r4 Now
4.0.1-MCASTr2 Now
3.0.3r9 Now

Option 2: Disable SSHv1 and manage the device through other means (such
as HTTPS).

Option 3: Configure the firewall to only accept connections from
trusted IP addresses. Additionally, enabling IP Spoof protection will
add an additional layer of security.


Patch Availability:
Juniper Networks currently has updated versions of ScreenOS available
for immediate download.


How to get ScreenOS:
Customers with a valid product warranty or a support contract may
download the software from the Juniper Networks CSC web portal:
http://www.juniper.net/support/

For all other customers, including those with expired support contracts,
please call your regional Juniper Networks TAC (JTAC) center. To get a
listing of JTAC phone numbers, please sign up for a CSC account at:
http://www.juniper.net/entitlement/setupAccountInfo.do

Select option 2 from the telephone menu and be sure to select the
correct product from the phone tree. Once connected with an engineer
state that you are calling in regards to a Security Advisory and provide
the title of this notice as evidence of your entitlement to the
specified release.

Please note that customers with expired support contracts will be
provided only with the software update for the version of software that
they are currently using, when that version becomes available.

As with any new software installation, Juniper Networks customers
planning to upgrade to any version of ScreenOS should carefully read the
release notes and other relevant documentation before beginning any
upgrade.


Juniper Networks would like to thank Mark Ellzey Thomas of NaviSite for
discovering this issue and working with us.


If you wish to verify the validity of this Security Advisory, the public
PGP key can be accessed at:
http://www.juniper.net/support/security/
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.4 (GNU/Linux)
Comment: Juniper NetScreen Security Response Team <security-alert@juniper.net>

iD8DBQFBD/UuW2Bw6QjqXRcRAlbgAJ0aIrji2u80xRJvPXhYpakdpCNZTwCdEZgs
VF13cW6F3qfOE7hwdsDw6Lo=
=Ebjo
-----END PGP SIGNATURE-----
Login or Register to add favorites

File Archive:

March 2024

  • Su
  • Mo
  • Tu
  • We
  • Th
  • Fr
  • Sa
  • 1
    Mar 1st
    16 Files
  • 2
    Mar 2nd
    0 Files
  • 3
    Mar 3rd
    0 Files
  • 4
    Mar 4th
    32 Files
  • 5
    Mar 5th
    28 Files
  • 6
    Mar 6th
    42 Files
  • 7
    Mar 7th
    17 Files
  • 8
    Mar 8th
    13 Files
  • 9
    Mar 9th
    0 Files
  • 10
    Mar 10th
    0 Files
  • 11
    Mar 11th
    15 Files
  • 12
    Mar 12th
    19 Files
  • 13
    Mar 13th
    21 Files
  • 14
    Mar 14th
    38 Files
  • 15
    Mar 15th
    15 Files
  • 16
    Mar 16th
    0 Files
  • 17
    Mar 17th
    0 Files
  • 18
    Mar 18th
    10 Files
  • 19
    Mar 19th
    32 Files
  • 20
    Mar 20th
    46 Files
  • 21
    Mar 21st
    16 Files
  • 22
    Mar 22nd
    13 Files
  • 23
    Mar 23rd
    0 Files
  • 24
    Mar 24th
    0 Files
  • 25
    Mar 25th
    12 Files
  • 26
    Mar 26th
    31 Files
  • 27
    Mar 27th
    19 Files
  • 28
    Mar 28th
    42 Files
  • 29
    Mar 29th
    0 Files
  • 30
    Mar 30th
    0 Files
  • 31
    Mar 31st
    0 Files

Top Authors In Last 30 Days

File Tags

Systems

packet storm

© 2022 Packet Storm. All rights reserved.

Services
Security Services
Hosting By
Rokasec
close