Race condition in Cisco IOS 12.2SCH in the Performance Routing Engine (PRE) module on uBR10000 devices, when NetFlow and an MPLS IPv6 VPN are configured, allows remote attackers to cause a denial of service (PXF process crash) by sending malformed MPLS 6VPE packets quickly, aka Bug ID CSCud83396.
The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.
Link | Tags |
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http://www.securitytracker.com/id/1032692 | vdb entry third party advisory |
http://tools.cisco.com/security/center/viewAlert.x?alertId=39439 | vendor advisory |
http://www.securityfocus.com/bid/75339 | vdb entry third party advisory |