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CVE-2019-25681— Xlight FTP Server 3.9.1 SEH Overwrite Buffer Overflow

Quick assessment

Affected
Xlightftpd Xlight
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.

Xlight FTP Server是Xlight开源的一个FTP服务器软件。 Xlight FTP Server 3.9.1版本存在缓冲区错误漏洞，该漏洞源于结构化异常处理程序覆盖漏洞，可能导致本地攻击者使应用程序崩溃并覆盖SEH指针。

CVSS 8.4 · High EPSS 0.21% · P10
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I. Basic Information for CVE-2019-25681

Vulnerability Information
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Vulnerability Title
Xlight FTP Server 3.9.1 SEH Overwrite Buffer Overflow
Source: CVE Program / CVE List V5
Vulnerability Description
Xlight FTP Server 3.9.1 contains a structured exception handler (SEH) overwrite vulnerability that allows local attackers to crash the application and overwrite SEH pointers by supplying a crafted buffer string. Attackers can inject a 428-byte payload through the program execution field in virtual server configuration to trigger a buffer overflow that corrupts the SEH chain and enables potential code execution.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存写
Source: CVE Program / CVE List V5
Vulnerability Title
Xlight FTP Server 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Xlight FTP Server是Xlight开源的一个FTP服务器软件。 Xlight FTP Server 3.9.1版本存在缓冲区错误漏洞，该漏洞源于结构化异常处理程序覆盖漏洞，可能导致本地攻击者使应用程序崩溃并覆盖SEH指针。
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
Xlightftpd Xlight 3.9.1 -

II. Public POCs for CVE-2019-25681

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III. Intelligence Information for CVE-2019-25681

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Exploits & Public PoCs for CVE-2019-25681 (1)

Other References for CVE-2019-25681 (1)

IV. Related Vulnerabilities

Same vendor: Xlightftpd
Same weakness: CWE-787

V. Comments for CVE-2019-25681

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