CVE-2019-9749
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I. Basic Information for CVE-2019-9749
Vulnerability Information
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Vulnerability Title
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Description
An issue was discovered in the MQTT input plugin in Fluent Bit through 1.0.4. When this plugin acts as an MQTT broker (server), it mishandles incoming network messages. After processing a crafted packet, the plugin's mqtt_packet_drop function (in /plugins/in_mqtt/mqtt_prot.c) executes the memmove() function with a negative size parameter. That leads to a crash of the whole Fluent Bit server via a SIGSEGV signal.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Title
Fluent Bit 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Fluent Bit是一款使用C语言编写的开源日志处理和分析系统。MQTT input plugin是其中的一个MQTT（消息队列遥测传输）输入插件。 Fluent Bit 1.0.4及之前版本中的MQTT输入插件存在安全漏洞。攻击者可借助特制的数据包利用改漏洞造成Fluent Bit服务器崩溃（段错误）。
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 |
|---|---|---|---|---|
| - | n/a | n/a | - |
II. Public POCs for CVE-2019-9749
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|---|
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- https://github.com/fluent/fluent-bit/issues/1135x_refsource_MISC
- https://nvd.nist.gov/vuln/detail/CVE-2019-9749
Same Patch Batch · n/a · 2019-03-13 · 18 CVEs total
| CVE-2019-9746 | libwebm 安全漏洞 | |
| CVE-2019-9738 | jimmykuu Gopher 跨站脚本漏洞 | |
| CVE-2019-9737 | Editor.md 跨站脚本漏洞 | |
| CVE-2019-9736 | 1024Tools Markdown 跨站脚本漏洞 | |
| CVE-2019-9735 | OpenStack Neutron 安全特征问题漏洞 | |
| CVE-2019-9740 | Python 注入漏洞 | |
| CVE-2019-9741 | Google Go 注入漏洞 | |
| CVE-2018-20621 | Microvirt MEmu 权限许可和访问控制漏洞 | |
| CVE-2019-9742 | G DATA Software Total Security 安全特征问题漏洞 | |
| CVE-2018-20800 | Open Ticket Request System 输入验证漏洞 | |
| CVE-2015-2254 | Huawei OceanStor UDS 信息泄露漏洞 | |
| CVE-2019-9750 | IoTivity 输入验证错误漏洞 | |
| CVE-2019-9748 | tinysvcmdns 安全漏洞 | |
| CVE-2019-9747 | tinysvcmdns 输入验证错误漏洞 | |
| CVE-2019-9754 | Tiny C Compiler 安全漏洞 | |
| CVE-2019-9752 | OTRS Open Ticket Request System 跨站脚本漏洞 | |
| CVE-2019-9751 | Open Ticket Request System 跨站脚本漏洞 |
IV. Related Vulnerabilities
Same vendor: n/a
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Open5GS SMF ogs_nas_parse_qos_rules denial of service - CVE-2026-8269
Open5GS SMF smf_nsmf_handle_create_sm_context denial of serv - CVE-2026-8268
Open5GS SMF OpenAPI_list_create denial of service
V. Comments for CVE-2019-9749
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