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CVE-2020-3235— Cisco IOS and IOS XE Software Simple Network Management Protocol Denial of Service Vulnerability

Quick assessment

Affected
Cisco Cisco IOS 12.2(53)SG1
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 IOS和IOS XE都是美国思科（Cisco）公司的一套为其网络设备开发的操作系统。 Cisco Catalyst 4500 Series中的IOS Software和IOS XE Software的Simple Network Management Protocol (SNMP)子系统存在代码问题漏洞，该漏洞源于在处理特定的SNMP对象标识符时程序没有充分验证输入。攻击者可通过将特制的SNMP数据包发送到受影响的设备利用该漏洞重新加载受影响的设备，进而导致拒绝服务。

AI Predicted 5.3 Difficulty: Easy EPSS 1.57% · P73
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I. Basic Information for CVE-2020-3235

Vulnerability Information
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Vulnerability Title
Cisco IOS and IOS XE 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) subsystem of Cisco IOS Software and Cisco IOS XE Software on Catalyst 4500 Series Switches could allow an authenticated, remote attacker to cause a denial of service (DoS) condition. The vulnerability is due to insufficient input validation when the software processes specific SNMP object identifiers. An attacker could exploit this vulnerability by sending a crafted SNMP packet to an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. Note: To exploit this vulnerability by using SNMPv2c or earlier, the attacker must know the SNMP read-only community string for an affected system. To exploit this vulnerability by using SNMPv3, the attacker must know the user credentials for the affected system.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
对可索引资源的访问不恰当(越界错误)
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco IOS和IOS XE 代码问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco IOS和IOS XE都是美国思科（Cisco）公司的一套为其网络设备开发的操作系统。 Cisco Catalyst 4500 Series中的IOS Software和IOS XE Software的Simple Network Management Protocol (SNMP)子系统存在代码问题漏洞，该漏洞源于在处理特定的SNMP对象标识符时程序没有充分验证输入。攻击者可通过将特制的SNMP数据包发送到受影响的设备利用该漏洞重新加载受影响的设备，进而导致拒绝服务。
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 IOS 12.2(53)SG1 n/a -

II. Public POCs for CVE-2020-3235

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III. Intelligence Information for CVE-2020-3235

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Vendor Advisories for CVE-2020-3235 (2)

Same Patch Batch · Cisco · 2020-06-03 · 50 CVEs total

CVE-2020-3353 5.9 MEDIUM Cisco Identity Services Engine Denial of Service Vulnerability
CVE-2020-3319 3.3 LOW Cisco Webex Network Recording Player and Cisco Webex Player Denial of Service Vulnerabilit
CVE-2020-3322 3.3 LOW Cisco Webex Network Recording Player and Cisco Webex Player Denial of Service Vulnerabilit
CVE-2020-3321 3.3 LOW Cisco Webex Network Recording Player and Cisco Webex Player Denial of Service Vulnerabilit
CVE-2020-3333 Cisco Application Services Engine Software Unauthenticated Event Policies Update Vulnerabi
CVE-2020-3257 Cisco IOx Application Environment for IOS Software for Cisco Industrial Routers Vulnerabil
CVE-2020-3267 Cisco Unified Contact Center Express Improper API Authorization Vulnerability
CVE-2020-3258 Cisco IOS Software for Cisco Industrial Routers Arbitrary Code Execution Vulnerabilities
CVE-2020-3281 Cisco Digital Network Architecture Center Information Disclosure Vulnerability
CVE-2020-3200 Cisco IOS and IOS XE Software Secure Shell Denial of Service Vulnerability
CVE-2020-3199 Cisco IOx Application Environment for IOS Software for Cisco Industrial Routers Vulnerabil
CVE-2020-3198 Cisco IOS Software for Cisco Industrial Routers Arbitrary Code Execution Vulnerabilities
CVE-2020-3228 Cisco IOS, IOS XE, and NX-OS Software Security Group Tag Exchange Protocol Denial of Servi
CVE-2020-3231 Cisco IOS Software for Catalyst 2960-L Series Switches and Catalyst CDB-8P Switches 802.1X
CVE-2020-3230 Cisco IOS and IOS XE Software Internet Key Exchange Version 2 Denial of Service Vulnerabil
CVE-2020-3229 Cisco IOS XE Software Web UI Privilege Escalation Vulnerability
CVE-2020-3227 Cisco IOx for IOS XE Software Privilege Escalation Vulnerability
CVE-2020-3226 Cisco IOS and IOS XE Software Session Initiation Protocol Denial of Service Vulnerability
CVE-2020-3224 Cisco IOS XE Software Web UI Command Injection Vulnerability
CVE-2020-3232 Cisco ASR 920 Series Aggregation Services Router Model 12SZ-IM SNMP Denial of Service Vuln

Showing top 20 of 50 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same vendor: Cisco
Same weakness: CWE-118

V. Comments for CVE-2020-3235

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