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                                   CERT-Renater

                        Note d'Information No. 2010/VULN020
_____________________________________________________________________

DATE                      : 11/01/2010

HARDWARE PLATFORM(S)      : /

OPERATING SYSTEM(S)       : JUNOS.

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http://www.publicsafety.gc.ca/prg/em/ccirc/2010/av10-002-eng.aspx
______________________________________________________________________

PUBLIC SAFETY CANADA
CANADIAN CYBER INCIDENT RESPONSE CENTRE

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    ADVISORY
*****************

Number: AV10-002
Date:  08 January 2010

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JUNOS (Juniper) Flaw Exposes Core Routers to Kernel Crash
*************************************************

PURPOSE
- ---------
The purpose of this advisory is to bring attention to a vulnerability which
affects JUNOS (Juniper).


ASSESSMENT
- -------------

Crafted packets containing malformed TCP header options can be sent by remote
attackers which may crash Juniper kernels or cause JUNOS devices to reboot.
JUNOS firewalls are unable to filter the malformed data.

CCIRC is not aware of any reports indicating that this vulnerability is being
exploited, or that exploit code is available in the wild.

The vendor does not release vulnerability news publicly, but their advisory
and updates are available to Juniper customers.

Affected versions include:
JUNOS 9.x
JUNOS 7.x
JUNOS 8.x

Devices with JUNOS later than 1/28/09 already have the fix.


SUGGESTED ACTION
- ----------------

CCIRC recommends that administrators identify affected products, then test
and apply patches or workaround as appropriate.


References:
http://securitytracker.com/alerts/2010/Jan/1023417.html
http://praetorianprefect.com/archives/2010/01/junos-juniper-flaw-exposes-core-routers-to-kernal-crash/
http://www.juniper.net/

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Note to Readers

The Canadian Cyber Incident Response Centre (CCIRC) provides a focal point
for Canada's cyber threat and vulnerability warning, analysis and response.
CCIRC is responsible for assuring the resilience of national critical
infrastructure through monitoring threats and coordinating a federal
response to cyber security incidents of national interest. CCIRC operates
in conjunction with the Government Operations Centre (GOC) within Public
Safety Canada and is a key component of the government's all-hazards
approach to emergency management and national security.


For general inquires into the role of Public Safety Canada, please contact
the department's Public Affairs division at:
Telephone:  613-944-4875 or 1-800-830-3118
Fax:        613-998-9589
E-mail:     communications@ps-sp.gc.ca

Government Operations Centre/Centre des opérations du gouvernement
Email/courriel: GOC-COG@PS-SP.GC.CA
Tel.: (613) 991-7000
STE : (613) 949-5773
Fax/Télécopieur: (613) 996-0995
Secure Fax/Télécopieur sécurisé: (613) 991-7094

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