A malformed SIP packet on UDP 5060 that transits an MPLS enabled vulnerable device that needs an MPLS tag to be imposed on the malformed packet might reload the device.
Vendor Status:
Cisco has issued an update to correct this vulnerability.
Disclosure Timeline:
2012-Feb-17 Updated information in Ciso IOS Software table for Cisco IOS 12.2SXH.
2011-Oct-21 Corrected back-end information regarding CSCtd10712. No change made in the Security Advisory itself.
2011-Sep-30 Updated information in fixed Cisco IOS Software table for releases 12.2MRB, 12.2SXH, 12.2SXI, 12.2SXJ, and 12.2SY.
2011-Sep-28 Initial public release.