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Cisco Intrusion Prevention System Jumbo Frames Denial of Service
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Secunia Advisory:
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SA30767
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Release Date:
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2008-06-19
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Popularity:
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2,804 views
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Critical:
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Moderately critical
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Impact:
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Security Bypass
DoS
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Where:
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From remote
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Solution Status:
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Unpatched
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| OS: | Cisco Intrusion Prevention System (IPS) 5.x
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| Software: | Cisco Intrusion Prevention System (IPS) 6.x
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| CVE reference: | CVE-2008-2060
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Description:
A vulnerability has been reported in Cisco Intrusion Prevention System, which can be exploited by malicious people to cause a DoS (Denial of Service) or bypass certain security restrictions.
The vulnerability is caused due to an unspecified error in the processing of Jumbo Ethernet frames received on a Gigabit network interface and can be exploited to trigger a kernel panic.
Successful exploitation requires that the Gigabit network interface is configured for inline mode.
NOTE: On platforms that continue to forward network traffic after a kernel panic takes place, the vulnerability will result in the bypassing of configured access controls and detection rules.
The vulnerability is reported in versions prior to 5.1(8)E2 and 6.0(5)E2.
Solution:
Reportedly, fixed versions 5.1(8)E2 and 6.0(5)E2 will be available soon.
The vendor recommends disabling Jumbo Ethernet support. Please see vendor's advisory for more details.
Provided and/or discovered by:
The vendor credits HD Moore of BreakingPoint Systems.
Original Advisory:
http://www.cisco.com/warp/public/707/cisco-sa-20080618-ips.shtml
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Please note: The information that this Secunia Advisory is based on comes from a third party unless stated otherwise.
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