CVE-2020-3204— Cisco IOS and IOS XE Software Tcl Arbitrary Code Execution Vulnerability
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I. Basic Information for CVE-2020-3204
Vulnerability Information
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Vulnerability Title
Cisco IOS and IOS XE Software Tcl Arbitrary Code Execution Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability in the Tool Command Language (Tcl) interpreter of Cisco IOS Software and Cisco IOS XE Software could allow an authenticated, local attacker with privileged EXEC credentials to execute arbitrary code on the underlying operating system (OS) with root privileges. The vulnerability is due to insufficient input validation of data passed to the Tcl interpreter. An attacker could exploit this vulnerability by loading malicious Tcl code on an affected device. A successful exploit could allow the attacker to cause memory corruption or execute the code with root privileges on the underlying OS of the affected device.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
输入验证不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Cisco IOS和IOS XE 输入验证错误漏洞
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 IOS和IOS XE中的Tool Command Language (Tcl)解析器存在输入验证错误漏洞，该漏洞源于缺乏对输入数据的验证。攻击者可通过在受影响的设备上加载恶意的Tcl代码利用该漏洞导致内存损坏或以root权限执行代码。
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)SE1 | n/a | - |
II. Public POCs for CVE-2020-3204
| # | POC Description | Source Link | Shenlong Link |
|---|
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- https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-tcl-ace-C9KuVKmmvendor-advisoryx_refsource_CISCO
- https://nvd.nist.gov/vuln/detail/CVE-2020-3204
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-2020-3232 | Cisco ASR 920 Series Aggregation Services Router Model 12SZ-IM SNMP Denial of Service Vuln | |
| 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-2020-3225 | Cisco IOS and IOS XE Software Common Industrial Protocol Denial of Service Vulnerabilities | |
| CVE-2020-3233 | Cisco IOx Application Framework Local Manager Stored Cross-Site Scripting Vulnerability |
Showing top 20 of 50 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same vendor: Cisco
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Cisco IoT Field Network Director Remote Device Denial of Ser - CVE-2026-20169
Cisco IoT Field Network Director Command Injection Vulnerabi
Same weakness: CWE-20
V. Comments for CVE-2020-3204
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