CVE-2017-2921
Quick assessment
Affected
Cesanta Mongoose
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.
Cesanta Mongoose是爱尔兰Cesanta公司的一套嵌入式服务器库，它包括TCP、HTTP客户端和服务器、WenSocket客户端和服务器等功能。Websocket protocol是其中的一个Websocket通信协议。 Cesanta Mongoose 6.8版本中的Websocket protocol实现存在整数溢出漏洞。远程攻击者可通过发送特制的websocket数据包利用该漏洞造成拒绝服务或执行代码。
Possible ATT&CK Techniques 2 AI
T1201 · Password Policy Discovery T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2017-2921
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
An exploitable memory corruption vulnerability exists in the Websocket protocol implementation of Cesanta Mongoose 6.8. A specially crafted websocket packet can cause an integer overflow, leading to a heap buffer overflow and resulting in denial of service and potential remote code execution. An attacker needs to send a specially crafted websocket packet over network to trigger this vulnerability.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5
Vulnerability Title
Cesanta Mongoose 数字错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cesanta Mongoose是爱尔兰Cesanta公司的一套嵌入式服务器库，它包括TCP、HTTP客户端和服务器、WenSocket客户端和服务器等功能。Websocket protocol是其中的一个Websocket通信协议。 Cesanta Mongoose 6.8版本中的Websocket protocol实现存在整数溢出漏洞。远程攻击者可通过发送特制的websocket数据包利用该漏洞造成拒绝服务或执行代码。
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
II. Public POCs for CVE-2017-2921
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2017-2921 (1)
Same Patch Batch · Cesanta · 2017-11-07 · 8 CVEs total
| CVE-2017-2891 | Cesanta Mongoose 安全漏洞 | |
| CVE-2017-2892 | Cesanta Mongoose 数字错误漏洞 | |
| CVE-2017-2893 | Cesanta Mongoose 安全漏洞 | |
| CVE-2017-2894 | Cesanta Mongoose 缓冲区错误漏洞 | |
| CVE-2017-2895 | Cesanta Mongoose 数字错误漏洞 | |
| CVE-2017-2909 | Cesanta Mongoose 安全漏洞 | |
| CVE-2017-2922 | Cesanta Mongoose 安全漏洞 |
IV. Related Vulnerabilities
Same product: Mongoose
-
CVE-2026-63626
Mongoose: ppp_handle_ipv6cp() uses attacker-controlled lengt -
CVE-2026-73261
Mongoose: handle_opt() missing opts[1] > len check — 1-byte -
CVE-2026-73260
Mongoose: Out-of-bounds Read via length-counter underflow in -
CVE-2026-73252
Mongoose: Unauthenticated remote heap out-of-bounds read in -
CVE-2026-101003
Cesanta Mongoose MQTT Broker main.c fn stack-based overflow
Same vendor: Cesanta
-
CVE-2026-63626
Mongoose: ppp_handle_ipv6cp() uses attacker-controlled lengt -
CVE-2026-73261
Mongoose: handle_opt() missing opts[1] > len check — 1-byte -
CVE-2026-73260
Mongoose: Out-of-bounds Read via length-counter underflow in -
CVE-2026-73252
Mongoose: Unauthenticated remote heap out-of-bounds read in -
CVE-2026-101003
Cesanta Mongoose MQTT Broker main.c fn stack-based overflow
V. Comments for CVE-2017-2921
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