CVE-2020-3471— Cisco Webex Meetings and Cisco Webex Meetings Server Unauthorized Audio Information Exposure Vulnerability
Quick assessment
Affected
Cisco Cisco WebEx Meetings Server
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 Meetings是美国思科（Cisco）公司的一套视频会议解决方案。 Cisco Webex Meetings 和 Cisco Webex Meetings Server存在安全漏洞，该漏洞源于易受攻击的Webex网站上会议和媒体服务之间的同步问题造成的。攻击者可利用该漏洞在被驱逐出活动Webex会话的情况下保持双向音频。一个成功的漏洞可以让攻击者在被驱逐的情况下保持Webex会话的音频连接。
Possible ATT&CK Techniques 1 AI
T1530 · Data from Cloud Storage
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I. Basic Information for CVE-2020-3471
Vulnerability Information
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Vulnerability Title
Cisco Webex Meetings and Cisco Webex Meetings Server Unauthorized Audio Information Exposure Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in Cisco Webex Meetings and Cisco Webex Meetings Server could allow an unauthenticated, remote attacker to maintain bidirectional audio despite being expelled from an active Webex session. The vulnerability is due to a synchronization issue between meeting and media services on a vulnerable Webex site. An attacker could exploit this vulnerability by sending crafted requests to a vulnerable Cisco Webex Meetings or Cisco Webex Meetings Server site. A successful exploit could allow the attacker to maintain the audio connection of a Webex session despite being expelled.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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 Meetings 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Webex Meetings是美国思科（Cisco）公司的一套视频会议解决方案。 Cisco Webex Meetings 和 Cisco Webex Meetings Server存在安全漏洞，该漏洞源于易受攻击的Webex网站上会议和媒体服务之间的同步问题造成的。攻击者可利用该漏洞在被驱逐出活动Webex会话的情况下保持双向音频。一个成功的漏洞可以让攻击者在被驱逐的情况下保持Webex会话的音频连接。
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 Server | n/a | - |
|
II. Public POCs for CVE-2020-3471
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Cisco · 2020-11-18 · 19 CVEs total
| CVE-2020-3470 | 9.8 CRITICAL | Cisco Integrated Management Controller Multiple Remote Code Execution Vulnerabilities |
| CVE-2020-3586 | 9.4 CRITICAL | Cisco DNA Spaces Connector Command Injection Vulnerability |
| CVE-2020-3419 | 6.5 MEDIUM | Cisco Webex Meetings and Cisco Webex Meetings Server Ghost Join Vulnerability |
| CVE-2020-27126 | 6.1 MEDIUM | Cisco Webex Meetings API Cross-Site Scripting Vulnerability |
| CVE-2020-26068 | 5.5 MEDIUM | Cisco Telepresence CE Software and RoomOS Software Unauthorized Token Generation Vulnerabi |
| CVE-2020-3441 | 5.3 MEDIUM | Cisco Webex Meetings and Cisco Webex Meetings Server Information Disclosure Vulnerability |
| CVE-2020-26077 | Cisco IoT Field Network Director Improper Access Control Vulnerability | |
| CVE-2020-26078 | Cisco IoT Field Network Director File Overwrite Vulnerability | |
| CVE-2020-26079 | Cisco IoT Field Network Director Unprotected Storage of Credentials Vulnerability | |
| CVE-2020-26080 | Cisco IoT Field Network Director Improper Domain Access Control Vulnerability | |
| CVE-2020-26081 | Cisco IoT Field Network Director Cross-Site Scripting Vulnerabilities | |
| CVE-2020-3367 | Cisco Secure Web Appliance Privilege Escalation Vulnerability | |
| CVE-2020-3392 | Cisco IoT Field Network Director Missing API Authentication Vulnerability | |
| CVE-2020-26076 | Cisco IoT Field Network Director Information Disclosure Vulnerability | |
| CVE-2020-26075 | Cisco IoT Field Network REST API Insufficient Input Validation Vulnerability | |
| CVE-2020-3482 | Cisco Expressway Software Unauthorized Access Information Disclosure Vulnerability | |
| CVE-2020-3531 | Cisco IoT Field Network Director Unauthenticated REST API Vulnerability | |
| CVE-2020-26072 | Cisco IoT Field Network Director SOAP API Authorization Bypass Vulnerability |
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V. Comments for CVE-2020-3471
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