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CVE-2019-1858— Cisco FXOS and NX-OS Software Simple Network Management Protocol Denial of Service Vulnerability

Quick assessment

Affected
Cisco Cisco Firepower Extensible Operating System (FXOS)
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Cisco NX-OS Software是美国思科（Cisco）公司的一套交换机使用的数据中心级操作系统软件。 Cisco FXOS Software和Cisco NX-OS Software中的Simple Network Management Protocol输入数据包处理器存在输入验证错误漏洞。该漏洞源于网络系统或产品未对输入的数据进行正确的验证。以下产品及版本受到影响：Cisco Firepower 4100 Series；Firepower 9300 Security Appliances；MD

AI Predicted 7.5 Difficulty: Easy EPSS 2.39% · P83

Possible ATT&CK Techniques 1 AI

T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2019-1858

Vulnerability Information
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Vulnerability Title
Cisco FXOS and NX-OS Software Simple Network Management Protocol Denial of Service Vulnerability
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco FXOS Software和Cisco NX-OS Software 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco NX-OS Software是美国思科（Cisco）公司的一套交换机使用的数据中心级操作系统软件。 Cisco FXOS Software和Cisco NX-OS Software中的Simple Network Management Protocol输入数据包处理器存在输入验证错误漏洞。该漏洞源于网络系统或产品未对输入的数据进行正确的验证。以下产品及版本受到影响：Cisco Firepower 4100 Series；Firepower 9300 Security Appliances；MD
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Cisco Cisco Firepower Extensible Operating System (FXOS) unspecified ~ n/a -

II. Public POCs for CVE-2019-1858

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III. Intelligence Information for CVE-2019-1858

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Vendor Advisories for CVE-2019-1858 (2)

Same Patch Batch · Cisco · 2019-05-16 · 18 CVEs total

CVE-2019-1832 Cisco Firepower Threat Defense Software Detection Engine Policy Bypass Vulnerability
CVE-2019-1825 Cisco Prime Infrastructure and Evolved Programmable Network Manager SQL Injection Vulnerab
CVE-2019-1824 Cisco Prime Infrastructure and Evolved Programmable Network Manager SQL Injection Vulnerab
CVE-2019-1823 Cisco Prime Infrastructure and Evolved Programmable Network Manager Remote Code Execution
CVE-2019-1822 Cisco Prime Infrastructure and Evolved Programmable Network Manager Remote Code Execution
CVE-2019-1821 Cisco Prime Infrastructure and Evolved Programmable Network Manager Remote Code Execution
CVE-2019-1820 Cisco Prime Infrastructure and Evolved Programmable Network Manager Path Traversal Vulnera
CVE-2019-1819 Cisco Prime Infrastructure and Evolved Programmable Network Manager Path Traversal Vulnera
CVE-2019-1818 Cisco Prime Infrastructure and Evolved Programmable Network Manager Path Traversal Vulnera
CVE-2019-1780 Cisco FXOS and NX-OS Software Command Injection Vulnerability
CVE-2019-1860 Cisco Unified Intelligence Center Remote File Injection Vulnerability
CVE-2019-1853 Cisco AnyConnect Secure Mobility Client for Linux Out-of-Bounds Memory Read Vulnerability
CVE-2019-1851 Cisco Identity Services Engine Arbitrary Client Certificate Creation Vulnerability
CVE-2019-1849 Cisco IOS XR Software BGP MPLS-Based EVPN Denial of Service Vulnerability
CVE-2019-1846 Cisco IOS XR Software for Cisco ASR 9000 Series Aggregation Services Routers MPLS OAM Deni
CVE-2019-1833 Cisco Firepower Threat Defense Software SSL/TLS Policy Bypass Vulnerability
CVE-2019-1768 Cisco NX-OS Software Buffer Overflow and Command Injection Vulnerability

IV. Related Vulnerabilities

Same product: Cisco Firepower Extensible Operating System (FXOS)
Same vendor: Cisco
Same weakness: CWE-20

V. Comments for CVE-2019-1858

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