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Vulnerability Analysis
Cisco IOS XR Software DVMRP Memory Exhaustion Vulnerabilities

CVE-2020-3569

Multiple vulnerabilities in the Distance Vector Multicast Routing Protocol (DVMRP) feature of Cisco IOS XR Software could allow an unauthenticated, remote attacker to either immediately crash the Internet Group Management Protocol (IGMP) process or make it consume available memory and eventually crash. The memory consumption may negatively impact other processes that are running on the device. These vulnerabilities are due to the incorrect handling of IGMP packets. An attacker could exploit these vulnerabilities by sending crafted IGMP traffic to an affected device. A successful exploit could allow the attacker to immediately crash the IGMP process or cause memory exhaustion, resulting in other processes becoming unstable. These processes may include, but are not limited to, interior and exterior routing protocols. Cisco will release software updates that address these vulnerabilities.

CISA KEV
CVSS Base Score
8.6
HIGH
Exploitability:3.9
Impact Score:4.0
Temporal Score:-
EPSS:3.29%

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
3.293%
EPSS Percentile
86.9th pct
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 ReferencesNone identified

Affected Products & Versions

Vendor Product Affected Versions
No affected products specified.

References

No reference links found.

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