Cisco ACNS Can Be Crashed With Specially Crafted Compressed DNS Data
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SecurityTracker Alert ID: 1014046
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SecurityTracker URL: http://securitytracker.com/id?1014046
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CVE Reference: GENERIC-MAP-NOMATCH
(Links to External Site)
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Date: May 24 2005
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Impact: Denial of service via network
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Fix Available: Yes
Vendor Confirmed: Yes
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Advisory: Cisco Security Advisory
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Description: A vulnerability was reported in Cisco ACNS in the processing of DNS messages. A remote user can cause denial of service conditions.
A remote user can send a DNS packet with specially crafted message compression data to cause an error on the target system. The
target device may function abnormally or crash.
The Cisco 500 Series Content Engines, Cisco 7300 Series Content Engines, Cisco
Content Routers 4400 series, Cisco Content Distribution Manager 4600 series, and Cisco Content Engine Module for Cisco 2600, 2800,
3600, 3700, and 3800 series Integrated Service Routers are affected.
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Impact: A remote user can cause the target system to crash or function abnormally.
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Solution: The vendor has issued a fix. A fix matrix is available at:
http://www.cisco.com/warp/public/707/cisco-sn-20050524-dns.shtml
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Vendor URL: www.cisco.com/warp/public/707/cisco-sn-20050524-dns.shtml (Links to External Site)
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Cause: Exception handling error
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Message History:
None.
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Source Message Contents
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Date: Tue, 24 May 2005 12:48:49 -0400
Subject: http://www.cisco.com/warp/public/707/cisco-sn-20050524-dns.shtml
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> Cisco Security Notice:Crafted DNS Packet Can Cause Denial Of Service
> Document ID: 64994
Excerpt:
This issue is documented in the following bug IDs (available to registered customers only):
CSCsa67687 -- IP Phones 7902/7905/7912
CSCsa67666 -- ATA 186/188
CSCeh63819 -- Unity Express
CSCeh59380 -- ACNS devices
The following products are affected by this vulnerability:
Cisco IP Phones 7902/7905/7912
Cisco ATA (Analog Telephone Adaptor) 186/188
Cisco Unity Express
Cisco ACNS (Application and Content Networking System) devices, including:
Cisco 500 Series Content Engines
Cisco 7300 Series Content Engines
Cisco Content Routers 4400 series
Cisco Content Distribution Manager 4600 series
Cisco Content Engine Module for Cisco 2600, 2800, 3600, 3700, and 3800 series Integrated Service Rout
ers
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