CVE-2020-3435— Cisco AnyConnect Secure Mobility Client for Windows Profile Modification Vulnerability
Quick assessment
Affected
Cisco Cisco AnyConnect Secure Mobility Client
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 AnyConnect Secure Mobility Client for Windows是美国思科（Cisco）公司的一款基于Windows平台的可通过任何设备安全访问网络和应用的安全移动客户端。 基于Windows平台的Cisco AnyConnect Secure Mobility Client 4.9.00086及之前版本中的IPC通道存在输入验证错误漏洞，该漏洞源于程序没有充分验证用户提交的输入。本地攻击者可通过发送特制的IPC消息利用该漏洞修改VPN配置文件。
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I. Basic Information for CVE-2020-3435
Vulnerability Information
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Vulnerability Title
Cisco AnyConnect Secure Mobility Client for Windows Profile Modification Vulnerability
Source: CVE Program / CVE List V5
Vulnerability Description
A vulnerability in the interprocess communication (IPC) channel of Cisco AnyConnect Secure Mobility Client for Windows could allow an authenticated, local attacker to overwrite VPN profiles on an affected device. To exploit this vulnerability, the attacker would need to have valid credentials on the Windows system. The vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending a crafted IPC message to the AnyConnect process on an affected device. A successful exploit could allow the attacker to modify VPN profile files. To exploit this vulnerability, the attacker would need to have valid credentials on the Windows system.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/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 AnyConnect Secure Mobility Client 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco AnyConnect Secure Mobility Client for Windows是美国思科（Cisco）公司的一款基于Windows平台的可通过任何设备安全访问网络和应用的安全移动客户端。 基于Windows平台的Cisco AnyConnect Secure Mobility Client 4.9.00086及之前版本中的IPC通道存在输入验证错误漏洞，该漏洞源于程序没有充分验证用户提交的输入。本地攻击者可通过发送特制的IPC消息利用该漏洞修改VPN配置文件。
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 AnyConnect Secure Mobility Client | n/a | - |
|
II. Public POCs for CVE-2020-3435
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2020-3435 (1)
-
https://tools.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-anyconnect-profile-7u3PERKF vendor-advisory x_refsource_CISCO
Same Patch Batch · Cisco · 2020-08-17 · 17 CVEs total
| CVE-2020-3433 | 7.8 HIGH | Cisco AnyConnect Secure Mobility Client for Windows DLL Hijacking Vulnerability |
| CVE-2020-3500 | 6.8 MEDIUM | Cisco StarOS IPv6 Denial of Service Vulnerability |
| CVE-2020-3463 | 6.1 MEDIUM | Cisco Webex Meetings Reflected Cross-Site Scripting Vulnerability |
| CVE-2020-3346 | 6.1 MEDIUM | Cisco Unified Communications Manager Cross-Site Scripting Vulnerability |
| CVE-2020-3447 | 5.5 MEDIUM | Cisco Email Security Appliance and Cisco Content Security Management Appliance Information |
| CVE-2020-3434 | 5.5 MEDIUM | Cisco AnyConnect Secure Mobility Client for Windows Denial of Service Vulnerability |
| CVE-2020-3472 | 5.0 MEDIUM | Cisco Webex Meetings User Email Address Information Disclosure Vulnerability |
| CVE-2020-3464 | 4.8 MEDIUM | Cisco UCS Director Stored Cross-Site Scripting Vulnerability |
| CVE-2020-3449 | 4.3 MEDIUM | Cisco IOS XR Software Additional Paths Denial of Service Vulnerability |
| CVE-2020-3413 | 4.3 MEDIUM | Cisco Webex Meetings Scheduled Meeting Template Deletion Vulnerability |
| CVE-2020-3412 | 4.3 MEDIUM | Cisco Webex Meetings Scheduled Meeting Template Creation Vulnerability |
| CVE-2020-3502 | 4.1 MEDIUM | Cisco Webex Meetings Desktop App Information Disclosure Vulnerabilities |
| CVE-2020-3501 | 4.1 MEDIUM | Cisco Webex Meetings Desktop App Information Disclosure Vulnerabilities |
| CVE-2020-3448 | Cisco Cyber Vision Center Software Access Control Bypass Vulnerability | |
| CVE-2020-3411 | Cisco DNA Center Information Disclosure Vulnerability | |
| CVE-2020-3363 | Cisco Small Business Smart and Managed Switches Denial of Service Vulnerability |
IV. Related Vulnerabilities
Same product: Cisco AnyConnect Secure Mobility Client
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CVE-2021-40124
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V. Comments for CVE-2020-3435
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