A vulnerability in the IP Address Resolution Protocol (ARP) feature of Cisco IOS XE Software for Cisco ASR 1000 Series Aggregation Services Routers with a 20-Gbps Embedded Services Processor (ESP) installed could allow an unauthenticated, adjacent attacker to cause an affected device to reload, resulting in a denial of service condition. The vulnerability is due to insufficient error handling when an affected device has reached platform limitations. An attacker could exploit this vulnerability by sending a malicious series of IP ARP messages to an affected device. A successful exploit could allow the attacker to exhaust system resources, which would eventually cause the affected device to reload.
Published 2020-09-24 18:15:21
Updated 2023-05-23 13:55:46
View at NVD,   CVE.org
Vulnerability category: Denial of service

Exploit prediction scoring system (EPSS) score for CVE-2020-3508

0.06%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 23 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2020-3508

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
6.1
MEDIUM AV:A/AC:L/Au:N/C:N/I:N/A:C
6.5
6.9
NIST
7.4
HIGH CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
2.8
4.0
Cisco Systems, Inc.
7.4
HIGH CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
2.8
4.0
NIST

CWE ids for CVE-2020-3508

  • The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources.
    Assigned by:
    • nvd@nist.gov (Primary)
    • ykramarz@cisco.com (Secondary)

References for CVE-2020-3508

Products affected by CVE-2020-3508

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