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CVE-2024-3661— DHCP routing options can manipulate interface-based VPN traffic

Quick assessment

Affected
IETF DHCP
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

DHCP是一个网络基础协议。 DHCP存在安全漏洞，该漏洞源于可以通过静态路由选项将路由添加到客户端的路由表，同一本地网络上的攻击者可以读取、破坏或修改受VPN保护的网络流量。

CVSS 7.6 · High EPSS 4.06% · P91
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I. Basic Information for CVE-2024-3661

Vulnerability Information
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Vulnerability Title
DHCP routing options can manipulate interface-based VPN traffic
Source: CVE Program / CVE List V5
Vulnerability Description
DHCP can add routes to a client’s routing table via the classless static route option (121). VPN-based security solutions that rely on routes to redirect traffic can be forced to leak traffic over the physical interface. An attacker on the same local network can read, disrupt, or possibly modify network traffic that was expected to be protected by the VPN.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:L
Source: CVE Program / CVE List V5
Vulnerability Type
关键功能的认证机制缺失
Source: CVE Program / CVE List V5
Vulnerability Title
DHCP 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
DHCP是一个网络基础协议。 DHCP存在安全漏洞，该漏洞源于可以通过静态路由选项将路由添加到客户端的路由表，同一本地网络上的攻击者可以读取、破坏或修改受VPN保护的网络流量。
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
IETF DHCP 0 -

II. Public POCs for CVE-2024-3661

# POC Description Source Link Shenlong Link
1 None https://github.com/Roundthe-clock/CVE-2024-3661VPN POC Details
2 Demo TunnelVision vulnerability for VPN using DHCP option 121 https://github.com/YardenFadida/CVE-2024-3661_Demo POC Details
3 CVE-2024-3661 TunnelVision https://github.com/Wh1t3Fox/CVE-2024-3661 POC Details
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III. Intelligence Information for CVE-2024-3661

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Vendor Advisories for CVE-2024-3661 (4)

Security Blog Posts for CVE-2024-3661 (2)

News Coverage for CVE-2024-3661 (3)

Other References for CVE-2024-3661 (11)

IV. Related Vulnerabilities

Same product: DHCP
Same vendor: IETF
Same weakness: CWE-306

V. Comments for CVE-2024-3661

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