CVE-2021-42146
Quick assessment
Affected
n/a n/a
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.
Contiki-NG是一套用于下一代IoT（物联网）设备的开源跨平台操作系统。 Contiki-NG tinyDTLS 2018-08-30 版本及之前版本存在安全漏洞，该漏洞源于 DTLS 服务器允许远程攻击者在 TCP 最大分段生命周期的两倍内重复使用相同的编号。
Possible ATT&CK Techniques 1 AI
T1071 · Application Layer Protocol
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I. Basic Information for CVE-2021-42146
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
An issue was discovered in Contiki-NG tinyDTLS through master branch 53a0d97. DTLS servers allow remote attackers to reuse the same epoch number within two times the TCP maximum segment lifetime, which is prohibited in RFC6347. This vulnerability allows remote attackers to obtain sensitive application (data of connected clients).
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
Contiki-NG 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Contiki-NG是一套用于下一代IoT（物联网）设备的开源跨平台操作系统。 Contiki-NG tinyDTLS 2018-08-30 版本及之前版本存在安全漏洞，该漏洞源于 DTLS 服务器允许远程攻击者在 TCP 最大分段生命周期的两倍内重复使用相同的编号。
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-2021-42146
| # | POC Description | Source Link | Shenlong Link |
|---|
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Mailing List Discussions for CVE-2021-42146 (1)
Same Patch Batch · n/a · 2024-01-24 · 36 CVEs total
| CVE-2023-52039 | TOTOLINK X6000R 安全漏洞 | |
| CVE-2021-42143 | Contiki-NG 安全漏洞 | |
| CVE-2023-51885 | Mathtex 安全漏洞 | |
| CVE-2023-51886 | Mathtex 安全漏洞 | |
| CVE-2023-51887 | Mathtex 安全漏洞 | |
| CVE-2023-51888 | Mathtex 安全漏洞 | |
| CVE-2023-51889 | Mathtex 安全漏洞 | |
| CVE-2023-51890 | Mathtex 安全漏洞 | |
| CVE-2023-52038 | TOTOLINK X6000R 安全漏洞 | |
| CVE-2024-22725 | Orthanc 安全漏洞 | |
| CVE-2023-52040 | TOTOLINK X6000R 安全漏洞 | |
| CVE-2024-22720 | Kanboard 安全漏洞 | |
| CVE-2021-42144 | Contiki-NG 安全漏洞 | |
| CVE-2021-42145 | Contiki-NG 安全漏洞 | |
| CVE-2021-42147 | Contiki-NG 安全漏洞 | |
| CVE-2021-43584 | Nagios 跨站脚本漏洞 | |
| CVE-2023-24676 | ProcessWire 安全漏洞 | |
| CVE-2024-22751 | D-Link DIR-882 安全漏洞 | |
| CVE-2023-43995 | Line 安全漏洞 | |
| CVE-2023-51711 | REGIFY Regipay 安全漏洞 |
Showing top 20 of 36 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
V. Comments for CVE-2021-42146
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