CVE-2020-3542— Cisco Webex Training Unauthorized Meeting Join Vulnerability
Quick assessment
Affected
Cisco Cisco Webex Meetings
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 Webex Training是思科（Cisco）的一款高效、便捷、实时互动的远程培训系统。 Cisco Webex Training中存在输入验证错误漏洞，该漏洞源于未对输入的数据进行正确的验证，允许远程攻击者无需提供会议密码，即可加入受密码保护的会议。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2020-3542
Vulnerability Information
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Vulnerability Title
Cisco Webex Training Unauthorized Meeting Join Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in Cisco Webex Training could allow an authenticated, remote attacker to join a password-protected meeting without providing the meeting password. The vulnerability is due to improper validation of input to API requests that are a part of meeting join flow. An attacker could exploit this vulnerability by sending an API request to the application, which would return a URL that includes a meeting join page that is prepopulated with the meeting username and password. A successful exploit could allow the attacker to join the password-protected meeting. The attacker would be visible in the attendee list of the meeting.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N
Source: CVE Program / CVE List V5
Vulnerability Type
输入验证不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco Webex Training 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Webex Training是思科（Cisco）的一款高效、便捷、实时互动的远程培训系统。 Cisco Webex Training中存在输入验证错误漏洞，该漏洞源于未对输入的数据进行正确的验证，允许远程攻击者无需提供会议密码，即可加入受密码保护的会议。
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 Webex Meetings | n/a | - |
|
II. Public POCs for CVE-2020-3542
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2020-3542 (1)
-
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-webex-meetings-UtbwOR4Q vendor-advisory x_refsource_CISCO
Same Patch Batch · Cisco · 2020-09-04 · 15 CVEs total
| CVE-2020-3495 | 9.9 CRITICAL | Cisco Jabber for Windows Message Handling Arbitrary Code Execution Vulnerability |
| CVE-2020-3430 | 8.8 HIGH | Cisco Jabber for Windows Protocol Handler Command Injection Vulnerability |
| CVE-2020-3530 | 8.4 HIGH | Cisco IOS XR Authenticated User Privilege Escalation Vulnerability |
| CVE-2020-3478 | 8.1 HIGH | Cisco Enterprise NFV Infrastructure Software File Overwrite Vulnerability |
| CVE-2020-3498 | 6.5 MEDIUM | Cisco Jabber for Windows Information Disclosure Vulnerability |
| CVE-2020-3545 | 6.0 MEDIUM | Cisco FXOS Software Buffer Overflow Vulnerability |
| CVE-2020-3537 | 5.7 MEDIUM | Cisco Jabber for Windows Universal Naming Convention Link Handling Vulnerability |
| CVE-2020-3451 | 4.7 MEDIUM | Cisco Small Business RV340 Series Routers Command Injection and Remote Code Execution Vuln |
| CVE-2020-3453 | 4.7 MEDIUM | Cisco Small Business RV340 Series Routers Command Injection and Remote Code Execution Vuln |
| CVE-2020-3541 | 4.4 MEDIUM | Cisco Webex Meetings Client for Windows, Webex Meetings Desktop App, and Webex Teams Infor |
| CVE-2020-3547 | 4.3 MEDIUM | Cisco Email Security Appliance, Cisco Content Security Management Appliance, and Cisco Web |
| CVE-2020-3365 | 4.3 MEDIUM | Cisco Enterprise NFV Infrastructure Software Path Traversal Vulnerability |
| CVE-2020-3473 | Cisco IOS XR Software Authenticated User Privilege Escalation Vulnerability | |
| CVE-2020-3546 | Cisco Email Security Appliance Information Disclosure Vulnerability |
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V. Comments for CVE-2020-3542
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