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CVE-2019-1858

Cisco FXOS and NX-OS Software Simple Network Management Protocol Denial of Service Vulnerability

Published: May 16, 2019Updated: Nov 21, 2024 Sources: CVE List NVD BDUCWE-20
NVD MITRE
8.6CVSSHIGH
EPSS Score
2.6%
Top 16.6%
CISA KEV
Not in KEV
Exploits
0 Known
Remediation
Patch Available

Description

A vulnerability in the Simple Network Management Protocol (SNMP) input packet processor of Cisco FXOS Software and Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause the SNMP application to leak system memory, which could cause an affected device to restart unexpectedly. The vulnerability is due to improper error handling when processing inbound SNMP packets. An attacker could exploit this vulnerability by sending multiple crafted SNMP packets to an affected device. A successful exploit could allow the attacker to cause the SNMP application to leak system memory because of an improperly handled error condition during packet processing. Over time, this memory leak could cause the SNMP application to restart multiple times, leading to a system-level restart and a denial of service (DoS) condition.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:CC:NI:NA:H
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:HAvailability
High
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Weaknesses

CWE-20CWE-755

Affected Products

nx-osciscoNetworking Infrastructure
firepower extensible operating systemciscoNetworking Infrastructure
fx-osciscoNetworking Infrastructure
NX-OSCisco Systems Inc.Networking Infrastructure
FX-OSCisco Systems Inc.Networking Infrastructure
ciscocommercialUSNetworking Infrastructureaka cisco systems, cisco systems inc.
cisco systems inc.commercialUSNetworking Infrastructureaka cisco systems, cisco
and 1 more affected products View all →

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

1 technique
Initial Access
View detailed technique mapping

References

http://www.securityfocus.com/bid/108358
securityfocus.com
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-20190515-nxos-snmp-dos
tools.cisco.com
https://www.securityfocus.com/bid/108358
securityfocus.com

Timeline

Published
May 16, 2019
Last Updated
Nov 21, 2024

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