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CVE-2021-1353

Cisco StarOS IPv4 Denial of Service Vulnerability

Published: Jan 20, 2021Updated: Nov 21, 2024 Sources: CVE List NVD BDUCWE-401
NVD MITRE
5.8CVSSMEDIUM
EPSS Score
1.3%
Top 33.7%
CISA KEV
Not in KEV
Exploits
0 Known
Remediation
Patch Available

Description

A vulnerability in the IPv4 protocol handling 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 a memory leak that occurs during packet processing. An attacker could exploit this vulnerability by sending a series of crafted IPv4 packets through an affected device. A successful exploit could allow the attacker to exhaust the available memory and cause an unexpected restart of the npusim process, leading to a DoS condition on the affected device.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:CC:NI:NA:L
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:LAvailability
Low
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Weaknesses

CWE-401

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
virtualized packet core-single instancecisco
On-prem
Networking Infrastructure / router-switch
ciscocommercialUSNetworking Infrastructureaka cisco systems, cisco systems inc.
cisco systems inc.commercialUSNetworking Infrastructureaka cisco systems, cisco

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

References

https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asr-mem-leak-dos-MTWGHKk3
tools.cisco.com

Timeline

Published
Jan 20, 2021
Last Updated
Nov 21, 2024

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