CVE-2020-3566
Cisco IOS XR Software DVMRP Memory Exhaustion Vulnerability
Basic Information
- CVE State
- PUBLISHED
- Reserved Date
- December 12, 2019
- Published Date
- August 29, 2020
- Last Updated
- November 08, 2024
- Vendor
- Cisco
- Product
- Cisco IOS XR Software
- Description
- A vulnerability in the Distance Vector Multicast Routing Protocol (DVMRP) feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to exhaust process memory of an affected device. The vulnerability is due to insufficient queue management for Internet Group Management Protocol (IGMP) packets. An attacker could exploit this vulnerability by sending crafted IGMP traffic to an affected device. A successful exploit could allow the attacker to cause memory exhaustion, resulting in instability of other processes. These processes may include, but are not limited to, interior and exterior routing protocols. Cisco will release software updates that address this vulnerability.
CVSS Scores
CVSS v3.1
8.6 - HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
SSVC Information
- Exploitation
- active
- Automatable
- Yes
- Technical Impact
- partial
Exploit Status
- Exploited in the Wild
- Yes (added 2021-11-03 00:00:00 UTC) Source
Known Exploited Vulnerability Information
| Source | Added Date |
|---|---|
| CISA | 2021-11-03 00:00:00 UTC |