CVE-2020-3338

Cisco NX-OS Software IPv6 Protocol Independent Multicast Denial of Service Vulnerability

State: Published
Severity: 7.5 High
Published: Aug 27, 2020
Updated: Nov 13, 2024
Reserved: Dec 12, 2019

Description

A vulnerability in the Protocol Independent Multicast (PIM) feature for IPv6 networks (PIM6) of Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper error handling when processing inbound PIM6 packets. An attacker could exploit this vulnerability by sending multiple crafted PIM6 packets to an affected device. A successful exploit could allow the attacker to cause the PIM6 application to leak system memory. Over time, this memory leak could cause the PIM6 application to stop processing legitimate PIM6 traffic, leading to a DoS condition on the affected device.

Scores

CVSS	Score	Vector	Source
3.0	7.5 High	CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H	cisco

Weaknesses

CWE-404

Affected Products

Product	Versions
Cisco NX-OS Software 5.2(1)Cisco	n/aAffected

References

20200826 Cisco NX-OS Software IPv6 Protocol Independent Multicast Denial of Service Vulnerabilityvendor-advisory

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