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CVE-2020-3500

Cisco StarOS IPv6 Denial of Service Vulnerability

Published: Aug 17, 2020Updated: Nov 21, 2024 Sources: CVE List NVD BDUCWE-119
NVD MITRE
6.8CVSSMEDIUM
EPSS Score
1.6%
Top 27.1%
CISA KEV
Not in KEV
Exploits
0 Known
Remediation
Patch Available

Description

A vulnerability in the IPv6 implementation of Cisco StarOS could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to insufficient validation of incoming IPv6 traffic. An attacker could exploit this vulnerability by sending a crafted IPv6 packet to an affected device with the goal of reaching the vulnerable section of the input buffer. A successful exploit could allow the attacker to cause the device to reload, resulting in a DoS condition. This vulnerability is specific to IPv6 traffic. IPv4 traffic is not affected.

CVSS Vector Breakdown

AV:NAC:HPR:NUI:NS:CC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:HAttack Complexity
High
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-119

Affected Products

Cisco ASR 5000 Series SoftwareCisco
On-prem
Networking Infrastructure / router-switch
StarOSCisco Systems Inc.
EmbeddedFirmware
Networking Infrastructure / router-switch
staroscisco
On-premNetwork Device
Networking Infrastructure / router-switch
ciscocommercialUSNetworking Infrastructureaka cisco systems, cisco systems inc.
cisco systems inc.commercialUSNetworking Infrastructureaka cisco systems, cisco

Attack Graph

Products CVE Techniques Tactics

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Exploitability

0 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available

MITRE ATT&CK

2 techniques
Initial Access
Privilege Escalation
View detailed technique mapping

References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asr5k-ipv6-dos-ce3zhF8m
tools.cisco.com

Timeline

Published
Aug 17, 2020
Last Updated
Nov 21, 2024

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