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CVE-2018-25125— Netis DL4322D RTK 2.1.1 FTP Service DoS

Quick assessment

Affected
Netis Systems Co., Ltd. DL4322D
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.

Netis ADSL Router是中国天旦（Netis）公司的一款支持ADSL连接的路由器。 Netis ADSL Router DL4322D RTK 2.1.1版本存在安全漏洞，该漏洞源于嵌入式FTP服务存在缓冲区溢出，可能导致拒绝服务攻击。

AI Predicted 5.9 Difficulty: Easy EPSS 0.49% · P40

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2018-25125

Vulnerability Information
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Vulnerability Title
Netis DL4322D RTK 2.1.1 FTP Service DoS
Source: CVE Program / CVE List V5
Vulnerability Description
Netis ADSL Router DL4322D firmware RTK 2.1.1 contains a buffer overflow vulnerability in the embedded FTP service that allows an authenticated remote user to trigger a denial of service. After logging in to the FTP service, sending an FTP command such as ABOR with an excessively long argument causes the service, and in practice the router, to crash or become unresponsive, resulting in a loss of availability for the device and connected users.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
未进行输入大小检查的缓冲区拷贝(传统缓冲区溢出)
Source: CVE Program / CVE List V5
Vulnerability Title
Netis ADSL Router 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Netis ADSL Router是中国天旦（Netis）公司的一款支持ADSL连接的路由器。 Netis ADSL Router DL4322D RTK 2.1.1版本存在安全漏洞，该漏洞源于嵌入式FTP服务存在缓冲区溢出，可能导致拒绝服务攻击。
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
Netis Systems Co., Ltd. DL4322D 0 ~ RTK 2.1.1 -

II. Public POCs for CVE-2018-25125

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III. Intelligence Information for CVE-2018-25125

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IV. Related Vulnerabilities

Same vendor: Netis Systems Co., Ltd.
Same weakness: CWE-120

V. Comments for CVE-2018-25125

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