Vulnerability Analysis
Cisco IOS XR Software DVMRP Memory Exhaustion Vulnerability
CVE-2020-3566
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.
CISA KEV
CVSS Base Score
8.6
HIGH
Exploitability:3.9
Impact Score:4.0
Temporal Score:-
EPSS:3.96%
Threat Intelligence Signals
CISA KEV
YES
KEV Date Added
2021-11-03
Ransomware Use
Unknown
KEV Due Date
2022-05-03
VulnCheck In-the-Wild
No
Nuclei Template
No
EPSS Score
3.959%
EPSS Percentile
89.1th pct
GHSA ID
GitHub Severity
HIGH
SSVC Exploitation
—
SSVC Automatable
—
Vulnerability Class
—
Identity & Timeline
| Status | - |
| Assigning Authority | - |
| CVSS Version / Source | - |
| Reserved | - |
| Published | - |
| Patch Date (date_public) | - |
| Exploit DB Date | - |
| First GitHub PoC Date | - |
| Last Updated | - |
| Time to Patch (Days to fix) | - |
| Exploit Release Gap | - |
| PoC Release Gap | - |
| Exploit DB References | None identified |
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| No affected products specified. | ||
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