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Cisco Catalyst Content Switching Modules Denial of Service Vulnerabilities
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Secunia Advisory:
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SA26724
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Release Date:
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2007-09-06
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Last Update:
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2007-09-11
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Popularity:
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4,435 views
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Critical:
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Moderately critical
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Impact:
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DoS
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Where:
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From remote
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Solution Status:
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Vendor Patch
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| Software: | Cisco Catalyst Content Switching Module (CSM) 4.x
Cisco Catalyst Content Switching Module with SSL (CSM-S) 2.x
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Subscribe:
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Instant alerts on relevant vulnerabilities 
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| CVE reference: | CVE-2007-4788
CVE-2007-4789
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Description:
Two vulnerabilities have been reported in the Cisco Catalyst Content Switching Modules (CSM) and Cisco Catalyst Content Switching Module with SSL (CSM-S), which can be exploited by malicious people to cause a DoS (Denial of Service).
1) An unspecified error exists when processing certain TCP packets that were received out of order. This can be exploited to cause a high CPU load or a device reload due to a FPGA4 exception with icp.fatPath length error by sending specially crafted TCP packets to a vulnerable system.
2) An unspecified error exists within the "service termination" option, which can be exploited to cause a PGA4 exception 1 IDLE error under a high network load by sending specially crafted TCP packets to a vulnerable system.
Vulnerability #1 is reported in CSM 4.2 prior to 4.2.3a and CMS-S 2.1prior to 2.1.2a. Vulnerability #2 is reported in CSM 4.2 prior to 4.2.7 and CMS-S 2.1 prior to 2.1.6.
Solution:
Apply updated versions. See vendor advisory for details.
Provided and/or discovered by:
Reported by the vendor.
Changelog:
2007-09-11: Added CVE reference.
Original Advisory:
http://www.cisco.com/en/US/products/p...curity_advisory09186a00808b4d3b.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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