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CVE-2018-0197— Cisco IOS and IOS XE Software VLAN Trunking Protocol Denial of Service Vulnerability

Quick assessment

Affected
Cisco Cisco IOS and IOS XE Software
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 Software和IOS XE Software都是美国思科（Cisco）公司为其网络设备开发的操作系统。VLAN Trunking Protocol（VTP）是其中的一个中继协议子系统。 Cisco IOS Software和IOS XE Software中的VTP子系统存在输入验证漏洞，该漏洞源于受影响软件处理VTP数据包子集的方式存在逻辑错误。攻击者可通过发送VTP数据包利用该漏洞损坏内部VTP数据库，造成拒绝服务。

AI Predicted 7.5 Difficulty: Easy EPSS 0.62% · P49
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I. Basic Information for CVE-2018-0197

Vulnerability Information
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Vulnerability Title
Cisco IOS and IOS XE Software VLAN Trunking Protocol Denial of Service Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the VLAN Trunking Protocol (VTP) subsystem of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to corrupt the internal VTP database on an affected device and cause a denial of service (DoS) condition. The vulnerability is due to a logic error in how the affected software handles a subset of VTP packets. An attacker could exploit this vulnerability by sending VTP packets in a sequence that triggers a timeout in the VTP message processing code of the affected software. A successful exploit could allow the attacker to impact the ability to create, modify, or delete VLANs and cause a DoS condition. There are workarounds that address this vulnerability. This vulnerability affects Cisco devices that are running a vulnerable release of Cisco IOS Software or Cisco IOS XE Software, are operating in VTP client mode or VTP server mode, and do not have a VTP domain name configured. The default configuration for Cisco devices that are running Cisco IOS Software or Cisco IOS XE Software and support VTP is to operate in VTP server mode with no domain name configured.
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 IOS Software和IOS XE Software VLAN Trunking Protocol子系统输入验证漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco IOS Software和IOS XE Software都是美国思科（Cisco）公司为其网络设备开发的操作系统。VLAN Trunking Protocol（VTP）是其中的一个中继协议子系统。 Cisco IOS Software和IOS XE Software中的VTP子系统存在输入验证漏洞，该漏洞源于受影响软件处理VTP数据包子集的方式存在逻辑错误。攻击者可通过发送VTP数据包利用该漏洞损坏内部VTP数据库，造成拒绝服务。
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 and IOS XE Software 15.2(2)E6 -

II. Public POCs for CVE-2018-0197

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III. Intelligence Information for CVE-2018-0197

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Vendor Advisories for CVE-2018-0197 (2)

Same Patch Batch · Cisco · 2018-10-05 · 110 CVEs total

CVE-2018-15391 Cisco Remote PHY IPv4 Fragment Denial of Service Vulnerability
CVE-2018-15408 Cisco Webex Network Recording Player and Cisco Webex Player Remote Code Execution Vulnerab
CVE-2018-15407 Cisco HyperFlex World-Readable Sensitive Information Vulnerability
CVE-2018-15406 Cisco UCS Director Stored Cross-Site Scripting Vulnerability
CVE-2018-15405 Cisco Integrated Management Controller Supervisor and Cisco UCS Director Authenticated Web
CVE-2018-15404 Cisco Integrated Management Controller Supervisor and Cisco UCS Director System Resources
CVE-2018-15403 Multiple Cisco Unified Communications Products Open Redirect Vulnerability
CVE-2018-15401 Cisco Hosted Collaboration Mediation Fulfillment Cross-Site Request Forgery Vulnerability
CVE-2018-15400 Cisco Cloud Services Platform 2100 Cross-Site Scripting Vulnerability
CVE-2018-15399 Cisco Adaptive Security Appliance TCP Syslog Denial of Service Vulnerability
CVE-2018-15398 Cisco Adaptive Security Appliance Access Control List Bypass Vulnerability
CVE-2018-15397 Cisco Adaptive Security Appliance IPsec VPN Denial of Service Vulnerability
CVE-2018-15396 Cisco Unity Connection File Upload Denial of Service Vulnerability
CVE-2018-15392 Cisco Industrial Network Director DHCP Request Processing Denial of Service Vulnerability
CVE-2018-15374 Cisco IOS XE Software Digital Signature Verification Bypass Vulnerability
CVE-2018-15377 Cisco IOS and IOS XE Software Plug and Play Agent Memory Leak Vulnerability
CVE-2018-15376 Cisco IOS Software for Cisco 800 Series Industrial Integrated Services Routers Arbitrary M
CVE-2018-15375 Cisco IOS Software for Cisco 800 Series Industrial Integrated Services Routers Arbitrary M
CVE-2018-15379 Cisco Prime Infrastructure Arbitrary File Upload and Command Execution Vulnerability
CVE-2018-15373 Cisco IOS and IOS XE Software Cisco Discovery Protocol Denial of Service Vulnerability

Showing top 20 of 110 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Cisco IOS and IOS XE Software
Same vendor: Cisco
Same weakness: CWE-20

V. Comments for CVE-2018-0197

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