CVE-2020-3596— Cisco Expressway Series and TelePresence Video Communication Server Denial of Service Vulnerability
Quick assessment
Affected
Cisco Cisco TelePresence Video Communication Server (VCS) Expressway
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 Expressway Series和Cisco TelePresence Video Communication Server（VCS）都是美国思科（Cisco）公司的产品。Cisco Expressway Series是一款用于统一通信的高级协作网关。Cisco TelePresence Video Communication Server是一款视频通信服务器。 Cisco Expressway Series和Cisco TelePresence Video Communication Se
Possible ATT&CK Techniques 2 AI
T1190 · Exploit Public-Facing Application T1499 · Endpoint Denial of Service
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I. Basic Information for CVE-2020-3596
Vulnerability Information
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Vulnerability Title
Cisco Expressway Series and TelePresence Video Communication Server Denial of Service Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the Session Initiation Protocol (SIP) of Cisco Expressway Series and Cisco TelePresence Video Communication Server (VCS) could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to incorrect handling of incoming SIP traffic. An attacker could exploit this vulnerability by sending a series of SIP packets to an affected device. A successful exploit could allow the attacker to exhaust memory on an affected device, causing it to crash and leading to a DoS condition.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
未经控制的内存分配
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco Expressway Series 和 Cisco TelePresence Video Communication Server 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Expressway Series和Cisco TelePresence Video Communication Server（VCS）都是美国思科（Cisco）公司的产品。Cisco Expressway Series是一款用于统一通信的高级协作网关。Cisco TelePresence Video Communication Server是一款视频通信服务器。 Cisco Expressway Series和Cisco TelePresence Video Communication Se
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 TelePresence Video Communication Server (VCS) Expressway | n/a | - |
|
II. Public POCs for CVE-2020-3596
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2020-3596 (1)
-
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-expressway-vcs-dos-n6xxTMZB vendor-advisory x_refsource_CISCO
Same Patch Batch · Cisco · 2020-10-08 · 14 CVEs total
| CVE-2020-3544 | 8.8 HIGH | Cisco Video Surveillance 8000 Series IP Cameras Cisco Discovery Protocol Remote Code Execu |
| CVE-2020-3535 | 7.8 HIGH | Cisco Webex Teams Client for Windows DLL Hijacking Vulnerability |
| CVE-2020-3598 | 6.5 MEDIUM | Cisco Vision Dynamic Signage Director Missing Authentication Vulnerability |
| CVE-2020-3567 | 6.5 MEDIUM | Cisco Industrial Network Director Denial of Service Vulnerability |
| CVE-2020-3543 | 6.5 MEDIUM | Cisco Video Surveillance 8000 Series IP Cameras Cisco Discovery Protocol Memory Leak Vulne |
| CVE-2020-3602 | 6.3 MEDIUM | Cisco StarOS Privilege Escalation Vulnerability |
| CVE-2020-3568 | 5.8 MEDIUM | Cisco Email Security Appliance URL Filtering Bypass Vulnerability |
| CVE-2020-3597 | 5.4 MEDIUM | Cisco Nexus Data Broker Software Path Traversal Vulnerability |
| CVE-2020-3589 | 4.8 MEDIUM | Cisco Identity Services Engine Cross-Site Scripting Vulnerability |
| CVE-2020-3601 | 4.4 MEDIUM | Cisco StarOS Privilege Escalation Vulnerability |
| CVE-2020-3536 | Cisco SD-WAN vManage Cross-Site Scripting Vulnerability | |
| CVE-2020-3467 | Cisco Identity Services Engine Authorization Bypass Vulnerability | |
| CVE-2020-3320 | Cisco Firepower Management Center Cross-Site Scripting Vulnerability |
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V. Comments for CVE-2020-3596
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