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Cisco IOS XR MPLS Denial of Service Vulnerabilities
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Secunia Advisory:
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SA19740
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Release Date:
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2006-04-20
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Last Update:
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2006-04-26
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Popularity:
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9,564 views
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Critical:
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Less critical
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Impact:
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DoS
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Where:
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From local network
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Solution Status:
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Vendor Patch
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| OS: | Cisco IOS XR 3.x
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Subscribe:
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Instant alerts on relevant vulnerabilities 
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| CVE reference: | CVE-2006-1927
CVE-2006-1928
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Description:
Three vulnerabilities have been reported in Cisco IOS XR, which can be exploited by malicious people to cause a DoS (Denial of Service).
All three vulnerabilities are caused due to unspecified errors within the processing of MPLS (Multi Protocol Label Switching) packets. This can be exploited via specially crafted MPLS packets to restart the NetIO process, which causes a Modular Services Card on a Cisco Carrier Routing System 1 (CRS-1) or a Line Card on a Cisco 12000 series router to reload.
Successful exploitation requires that MPLS has been configured on the network device.
Solution:
Apply patches (see patch matrix in vendor advisory).
Provided and/or discovered by:
Reported by the vendor.
Changelog:
2006-04-26: Added CVE references.
Original Advisory:
Cisco:
http://www.cisco.com/warp/public/707/cisco-sa-20060419-xr.shtml
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About this Secunia Advisory
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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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