CVE-2021-4464— FIberHome AN5506-04-FA / HG6245D Routers Remote Stack Overflow
Quick assessment
Affected
FiberHome AN5506-04-FA
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.
FiberHome AN5506-04-F和FiberHome HG6245D都是中国烽火（FiberHome）公司的一款路由器。 FiberHome AN5506-04-F和FiberHome HG6245D存在安全漏洞，该漏洞源于HTTP服务存在栈缓冲区溢出问题，可能导致崩溃或执行流控制。以下版本受到影响：FiberHome AN5506-04-FA RP2631及之前版本和FiberHome HG6245D RP2602之前版本。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-4464
Vulnerability Information
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Vulnerability Title
FIberHome AN5506-04-FA / HG6245D Routers Remote Stack Overflow
Source: CVE Program / CVE List V5
Vulnerability Description
FiberHome AN5506-04-FA firmware versions up to and including RP2631 and HG6245D prior to RP2602 contain a stack-based buffer overflow, as the HTTP service ('webs') fails to enforce maximum lengths for Cookie header values. When a cookie longer than 511 bytes is processed, a stack buffer is overrun, leading to a crash or potential control of execution flow.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
栈缓冲区溢出
Source: CVE Program / CVE List V5
Vulnerability Title
FiberHome AN5506-04-F和FiberHome HG6245D 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FiberHome AN5506-04-F和FiberHome HG6245D都是中国烽火（FiberHome）公司的一款路由器。 FiberHome AN5506-04-F和FiberHome HG6245D存在安全漏洞，该漏洞源于HTTP服务存在栈缓冲区溢出问题，可能导致崩溃或执行流控制。以下版本受到影响：FiberHome AN5506-04-FA RP2631及之前版本和FiberHome HG6245D RP2602之前版本。
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 |
|---|---|---|---|---|
| FiberHome | AN5506-04-FA | 0 ~ RP2631 | - |
|
| FiberHome | HG6245D | 0 ~ RP2602 | - |
|
II. Public POCs for CVE-2021-4464
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2021-4464 (1)
Security Blog Posts for CVE-2021-4464 (1)
-
🔗 https://pierrekim.github.io/advisories/2021-fiberhome-0x00-ont.txt Read full article technical-description exploit
IV. Related Vulnerabilities
Same vendor: FiberHome
Same weakness: CWE-121
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V. Comments for CVE-2021-4464
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