CVE-2024-20337
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I. Basic Information for CVE-2024-20337
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability in the SAML authentication process of Cisco Secure Client could allow an unauthenticated, remote attacker to conduct a carriage return line feed (CRLF) injection attack against a user. This vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by persuading a user to click a crafted link while establishing a VPN session. A successful exploit could allow the attacker to execute arbitrary script code in the browser or access sensitive, browser-based information, including a valid SAML token. The attacker could then use the token to establish a remote access VPN session with the privileges of the affected user. Individual hosts and services behind the VPN headend would still need additional credentials for successful access.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:L/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
对CRLF序列的转义处理不恰当(CRLF注入)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Cisco Secure Client 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Secure Client是美国思科（Cisco）公司的一个用于连接虚拟专用网络的软件。 Cisco Secure Client 存在安全漏洞，该漏洞源于对用户提供的输入验证不足。可能允许未经身份验证的远程攻击者对用户进行回车换行 (CRLF) 注入攻击。
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 Secure Client | 4.9.00086 | - |
II. Public POCs for CVE-2024-20337
| # | POC Description | Source Link | Shenlong Link |
|---|---|---|---|
| 1 | CVE-2024-20337 POC Cisco Secure Client CRLF RCE and unauthorized remote access to VPN sessions | https://github.com/swagcraftedd/CVE-2024-20337-POC | POC Details |
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Same Patch Batch · Cisco · 2024-03-06 · 8 CVEs total
| CVE-2024-20338 | 7.3 HIGH | Cisco Secure Client 安全漏洞 |
| CVE-2024-20335 | 6.5 MEDIUM | Cisco Small Business 安全漏洞 |
| CVE-2024-20336 | 6.5 MEDIUM | Cisco Small Business 安全漏洞 |
| CVE-2024-20345 | 6.5 MEDIUM | Cisco AppDynamics Controller 安全漏洞 |
| CVE-2024-20301 | 6.2 MEDIUM | Cisco Duo 安全漏洞 |
| CVE-2024-20346 | 5.4 MEDIUM | Cisco AppDynamics Controller 安全漏洞 |
| CVE-2024-20292 | 4.4 MEDIUM | Cisco Duo 安全漏洞 |
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V. Comments for CVE-2024-20337
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