Executive Risk Summary
"A vulnerability in the Multicast Source Discovery Protocol (MSDP) implementation in Cisco IOS allows remote attackers to cause a denial of service (device reload) via encapsulated IGMP data in an MSDP packet. This vulnerability affects various Cisco IOS versions, including 12.0, 12.2 through 12.4, and 15.0 through 15.2, as well as IOS XE 2.1.x through 2.6.x and 3.1.xS through 3.4.xS."
Anticipated Attack Path
- 1. Attacker sends encapsulated IGMP data in an MSDP packet to the vulnerable Cisco IOS device
- 2. The device processes the MSDP packet, leading to a denial of service condition
- 3. The device reloads, causing network disruption and potential loss of connectivity
Am I Vulnerable?
- Verify the Cisco IOS version and check for the presence of the vulnerability
- Apply the recommended patch or workaround to mitigate the vulnerability
- Monitor network traffic for suspicious MSDP packets and implement additional security measures to prevent exploitation
Operational Audit Arsenal
Manual Verification Required
This is a non-Windows asset (Cisco). Use the target asset details and official path provided above to verify your current version against the official vendor advisories listed below.
Patch Impact Forecast
Potential network disruption and loss of connectivity during the patching process
Internal Work Notes
Technical Intelligence & Operational Utilities • Delivered Weekly