CVE-2021-21739
Quick assessment
Affected
n/a <ZXCTN 6120H>
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.
ZTE ZXCTN是中国中兴（ZTE）公司的承载网络接入层的分组传送产品。 ZTE ZXCTN 6120H V5.10.00B24版本存在数据伪造问题漏洞，该漏洞系统对数据可靠性的验证不够充分，攻击者可以用未经认证的光模块替换设备上经过认证的光模块，绕过系统认证检测，从而影响信号传输。
Possible ATT&CK Techniques 1 AI
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I. Basic Information for CVE-2021-21739
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A ZTE's product of the transport network access layer has a security vulnerability. Because the system does not sufficiently verify the data reliability, attackers could replace an authenticated optical module on the equipment with an unauthenticated one, bypassing system authentication and detection, thus affecting signal transmission. This affects: <ZXCTN 6120H><V5.10.00B24>
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
ZTE ZXCTN 数据伪造问题漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
ZTE ZXCTN是中国中兴（ZTE）公司的承载网络接入层的分组传送产品。 ZTE ZXCTN 6120H V5.10.00B24版本存在数据伪造问题漏洞，该漏洞系统对数据可靠性的验证不够充分，攻击者可以用未经认证的光模块替换设备上经过认证的光模块，绕过系统认证检测，从而影响信号传输。
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 |
|---|---|---|---|---|
| - | <ZXCTN 6120H> | <V5.10.00B24> | - |
|
II. Public POCs for CVE-2021-21739
| # | POC Description | Source Link | Shenlong Link |
|---|
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Other References for CVE-2021-21739 (1)
Same Patch Batch · n/a · 2021-08-05 · 54 CVEs total
| CVE-2021-22920 | Citrix Application Delivery Controller安全漏洞 | |
| CVE-2021-3655 | Linux kernel 输入验证错误漏洞 | |
| CVE-2021-35325 | TotoLink A720R 缓冲区错误漏洞 | |
| CVE-2021-20592 | Mitsubishi Electric GOT2000 安全漏洞 | |
| CVE-2021-22517 | Micro Focus Data Protector 安全漏洞 | |
| CVE-2021-26586 | HPE Edgeline Infrastructure Management 安全漏洞 | |
| CVE-2021-3642 | Red Hat Wildfly Elytron 安全漏洞 | |
| CVE-2021-1630 | MuleSoft Mule 代码问题漏洞 | |
| CVE-2021-3566 | FFmpeg 信息泄露漏洞 | |
| CVE-2021-22924 | libcurl 资源管理错误漏洞 | |
| CVE-2021-37156 | Redmine 代码问题漏洞 | |
| CVE-2021-22919 | Citrix ADC and NetScaler Gateway安全漏洞 | |
| CVE-2021-22927 | Citrix Application Delivery Controller授权问题漏洞 | |
| CVE-2021-22928 | Citrix Systems Citrix Virtual Apps and Desktops 安全漏洞 | |
| CVE-2021-21893 | Foxit PDF Reader和Foxit PDF Editor 资源管理错误漏洞 | |
| CVE-2021-21831 | Foxit PDF Reader和Foxit PDF Editor 资源管理错误漏洞 | |
| CVE-2021-21870 | Foxit PDF Reader和Foxit PDF Editor 资源管理错误漏洞 | |
| CVE-2021-21785 | IOBit Advanced SystemCare 安全漏洞 | |
| CVE-2021-21792 | IOBit Advanced SystemCare 安全漏洞 | |
| CVE-2021-21791 | IOBit Advanced SystemCare 安全漏洞 |
Showing top 20 of 54 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
V. Comments for CVE-2021-21739
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