CVE-2021-34795— Cisco Catalyst PON Series Switches Optical Network Terminal Vulnerabilities
Quick assessment
Affected
Cisco Cisco Catalyst PON Series
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 Catalyst Passive Optical Network Series Switches（Catalyst Pon Series Switches）是美国思科（Cisco）公司的一系列高性能、结构简单、易于维护的交换机。用于提供具有竞争力的网络解决方案。 Cisco Catalyst Passive Optical Network Series Switches ONT 存在信任管理问题漏洞，该漏洞源于允许未经身份验证的远程攻击者使用具有默认静态密码的调试帐户登录受影响的设备。
Possible ATT&CK Techniques 3 AI
T1562.001 T1059 · Command and Scripting Interpreter T1078.003 · Local Accounts
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I. Basic Information for CVE-2021-34795
Vulnerability Information
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Vulnerability Title
Cisco Catalyst PON Series Switches Optical Network Terminal Vulnerabilities
Source: CVE Program / CVE List V5
Vulnerability Description
Multiple vulnerabilities in the web-based management interface of the Cisco Catalyst Passive Optical Network (PON) Series Switches Optical Network Terminal (ONT) could allow an unauthenticated, remote attacker to perform the following actions: Log in with a default credential if the Telnet protocol is enabled Perform command injection Modify the configuration For more information about these vulnerabilities, see the Details section of this advisory.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
访问控制不恰当
Source: CVE Program / CVE List V5
Vulnerability Title
Cisco Catalyst Passive Optical Network Series Switches 信任管理问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Catalyst Passive Optical Network Series Switches（Catalyst Pon Series Switches）是美国思科（Cisco）公司的一系列高性能、结构简单、易于维护的交换机。用于提供具有竞争力的网络解决方案。 Cisco Catalyst Passive Optical Network Series Switches ONT 存在信任管理问题漏洞，该漏洞源于允许未经身份验证的远程攻击者使用具有默认静态密码的调试帐户登录受影响的设备。
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 Catalyst PON Series | n/a | - |
|
II. Public POCs for CVE-2021-34795
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2021-34795 (1)
-
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-catpon-multivulns-CE3DSYGr vendor-advisory x_refsource_CISCO
Same Patch Batch · Cisco · 2021-11-04 · 18 CVEs total
| CVE-2021-40112 | 10.0 CRITICAL | Cisco Catalyst PON Series Switches Optical Network Terminal Vulnerabilities |
| CVE-2021-40113 | 10.0 CRITICAL | Cisco Catalyst PON Series Switches Optical Network Terminal Vulnerabilities |
| CVE-2021-40119 | 9.8 CRITICAL | Cisco Policy Suite Static SSH Keys Vulnerability |
| CVE-2021-34739 | 8.1 HIGH | Cisco Small Business Series Switches Session Credentials Replay Vulnerability |
| CVE-2021-34741 | 7.5 HIGH | Cisco Email Security Appliance Denial of Service Vulnerability |
| CVE-2021-40124 | 6.7 MEDIUM | Cisco AnyConnect Secure Mobility Client for Windows with Network Access Manager Module Pri |
| CVE-2021-34773 | 6.5 MEDIUM | Cisco Unified Communications Products Cross-Site Request Forgery Vulnerability |
| CVE-2021-40120 | 6.5 MEDIUM | Cisco Small Business RV Series Routers Command Injection Vulnerability |
| CVE-2021-40115 | 6.1 MEDIUM | Cisco Webex Video Mesh Cross-Site Scripting Vulnerability |
| CVE-2021-1500 | 5.4 MEDIUM | Cisco Webex Video Mesh Arbitrary Site Redirection Vulnerability |
| CVE-2021-34784 | 5.4 MEDIUM | Cisco Prime Infrastructure and Evolved Programmable Network Manager Stored Cross-Site Scri |
| CVE-2021-40128 | 5.3 MEDIUM | Cisco Webex Meetings Email Content Injection Vulnerability |
| CVE-2021-40127 | 5.3 MEDIUM | Cisco Small Business 200, 300, and 500 Series Switches Web-Based Management Interface Deni |
| CVE-2021-34774 | 4.9 MEDIUM | Cisco Common Services Platform Collector Information Disclosure Vulnerability |
| CVE-2021-34731 | 4.8 MEDIUM | Cisco Prime Access Registrar Stored Cross-Site Scripting Vulnerability |
| CVE-2021-40126 | 4.3 MEDIUM | Cisco Umbrella Email Enumeration Vulnerability |
| CVE-2021-34701 | 4.3 MEDIUM | Cisco Unified Communications Products Path Traversal Vulnerability |
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V. Comments for CVE-2021-34795
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