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UNIRAS Brief - 140/04 - Cisco Security Advisory
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UNIRAS (UK Govt CERT) Briefing Notice - 140/04 dated 29.03.04 Time: 11:45
UNIRAS is part of NISCC (National Infrastructure Security Co-ordination Centre)
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UNIRAS material is also available from its website at www.uniras.gov.uk and
Information about NISCC is available from www.niscc.gov.uk
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Title
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Exploit for Multiple Cisco Vulnerabilities Released
Detail
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ESB-2004.0234 -- Cisco Security Advisory
Exploit for Multiple Cisco Vulnerabilities Released
29 March 2004
Product: Various
Publisher: Cisco Systems
Impact: Denial of Service
Administrator Compromise
Access Required: Remote
Ref: ESB-2000.398
ESB-2001.362
ESB-2000.312
ESB-2001.304
ESB-2001.263
ESB-2002.242
Comment: Proof-of-concept code has been publicly released that exploits
multiple previous vulnerabilities in various Cisco products.
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Proof-of-concept code has been publicly released that exploits multiple previous vulnerabilities in various Cisco products. The following list of vulnerabilities taken verbatim from the exploit code are affected. Included after each is a URL which may be referenced for more information regarding each vulnerability where Cisco has previously released a security advisory or response to address the issue. Customers should take steps to ensure that they have addressed each of these either via a software upgrade or workarounds in place as appropriate in order to mitigate any risk from this new exploit code.
[1] - Cisco 677/678 Telnet Buffer Overflow Vulnerability
CBOS - Improving Resilience to Denial-of-Service Attacks http://www.cisco.com/warp/public/707/CBOS-DoS.shtml
[2] - Cisco IOS Router Denial of Service Vulnerability
Cisco IOS HTTP Server Vulnerability http://www.cisco.com/warp/public/707/ioshttpserver-pub.shtml
[3] - Cisco IOS HTTP Auth Vulnerability
IOS HTTP Authorization Vulnerability http://www.cisco.com/warp/public/707/IOS-httplevel-pub.html
[4] - Cisco IOS HTTP Configuration Arbitrary Administrative Access Vulnerability
IOS HTTP Authorization Vulnerability http://www.cisco.com/warp/public/707/IOS-httplevel-pub.html
[5] - Cisco Catalyst SSH Protocol Mismatch Denial of Service Vulnerability
Cisco Catalyst SSH Protocol Mismatch Vulnerability http://www.cisco.com/warp/public/707/catalyst-ssh-protocolmismatch-pub.shtml
[6] - Cisco 675 Web Administration Denial of Service Vulnerability
Cisco is currently researching this vulnerability further. Mitigation
methods have been available for some time such as setting the web server to listen on a different port:
"Code Red" Worm - Customer Impact http://www.cisco.com/warp/public/707/cisco-code-red-worm-pub.shtml#workarounds
and through bugs resolved in the following advisory where the webserver under Cisco CBOS was enabled by default and listening on port 80 even
when the web server was not configured.
CBOS Web-based Configuration Utility Vulnerability http://www.cisco.com/warp/public/707/cisco-cbos-webserver-pub.shtml
[7] - Cisco Catalyst 3500 XL Remote Arbitrary Command Vulnerability
Catalyst 3500 Issue
Report: http://www.securityfocus.com/archive/1/141471
Cisco Response: http://www.securityfocus.com/archive/1/144655
[8] - Cisco IOS Software HTTP Request Denial of Service Vulnerability
Cisco IOS HTTP Server Query Vulnerability http://www.cisco.com/warp/public/707/ioshttpserverquery-pub.shtml
[9] - Cisco 514 UDP Flood Denial of Service Vulnerability
A Vulnerability in IOS Firewall Feature Set http://www.cisco.com/warp/public/707/IOS-cbac-dynacl-pub.shtml
This issue regarding the publication of new exploit code was first
reported to Cisco by the NCC/Telecom-ISAC who also contributed to the
content of this notice.
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For additional information or assistance, please contact the HELP Desk by
telephone or Not Protectively Marked information may be sent via
EMail to: uniras@xxxxxxxxxxxx
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Mon - Fri: 08:30 - 17:00 Hrs
Tel: +44 (0) 20 7821 1330 Ext 4511
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Outside of Office Hours:
On Call Duty Officer:
Tel: +44 (0) 20 7821 1330 and follow the prompts
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UNIRAS wishes to acknowledge the contributions of Cisco for the information
contained in this Briefing.
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This Briefing contains the information released by the original author. Some
of the information may have changed since it was released. If the vulnerability
affects you, it may be prudent to retrieve the advisory from the canonical site
to ensure that you receive the most current information concerning that problem.
Reference to any specific commercial product, process, or service by trade
name, trademark manufacturer, or otherwise, does not constitute or imply
its endorsement, recommendation, or favouring by UNIRAS or NISCC. The views
and opinions of authors expressed within this notice shall not be used for
advertising or product endorsement purposes.
Neither UNIRAS or NISCC shall also accept responsibility for any errors
or omissions contained within this briefing notice. In particular, they shall
not be liable for any loss or damage whatsoever, arising from or in connection
with the usage of information contained within this notice.
UNIRAS is a member of the Forum of Incident Response and Security Teams (FIRST)
and has contacts with other international Incident Response Teams (IRTs) in
order to foster cooperation and coordination in incident prevention, to prompt
rapid reaction to incidents, and to promote information sharing amongst its
members and the community at large.
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<End of UNIRAS Briefing>
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