CVE-2021-20863
Quick assessment
Affected
ELECOM CO.,LTD. ELECOM routers
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.
Elecom Edwrc是日本Elecom公司的一系列路由器。 Elecom Edwrc 存在操作系统命令注入漏洞，该漏洞源于ELECOM路由器外部输入数据构造可执行命令过程中，网络系统或产品未正确过滤其中的特殊元素。攻击者可利用该漏洞执行非法命令。
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-20863
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
OS command injection vulnerability in ELECOM routers (WRC-1167GST2 firmware v1.25 and prior, WRC-1167GST2A firmware v1.25 and prior, WRC-1167GST2H firmware v1.25 and prior, WRC-2533GS2-B firmware v1.52 and prior, WRC-2533GS2-W firmware v1.52 and prior, WRC-1750GS firmware v1.03 and prior, WRC-1750GSV firmware v2.11 and prior, WRC-1900GST firmware v1.03 and prior, WRC-2533GST firmware v1.03 and prior, WRC-2533GSTA firmware v1.03 and prior, WRC-2533GST2 firmware v1.25 and prior, WRC-2533GST2SP firmware v1.25 and prior, WRC-2533GST2-G firmware v1.25 and prior, and EDWRC-2533GST2 firmware v1.25 and prior) allows a network-adjacent authenticated attackers to execute an arbitrary OS command with the root privilege via unspecified vectors.
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
Elecom Edwrc 操作系统操作系统命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Elecom Edwrc是日本Elecom公司的一系列路由器。 Elecom Edwrc 存在操作系统命令注入漏洞，该漏洞源于ELECOM路由器外部输入数据构造可执行命令过程中，网络系统或产品未正确过滤其中的特殊元素。攻击者可利用该漏洞执行非法命令。
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 |
|---|---|---|---|---|
| ELECOM CO.,LTD. | ELECOM routers | (WRC-1167GST2 firmware v1.25 and prior, WRC-1167GST2A firmware v1.25 and prior, WRC-1167GST2H firmware v1.25 and prior, WRC-2533GS2-B firmware v1.52 and prior, WRC-2533GS2-W firmware v1.52 and prior, WRC-1750GS firmware v1.03 and prior, WRC-1750GSV firmwa | - |
|
II. Public POCs for CVE-2021-20863
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2021-20863 (1)
-
https://jvn.jp/en/vu/JVNVU94527926/index.html x_refsource_MISC
Other References for CVE-2021-20863 (1)
-
https://www.elecom.co.jp/news/security/20211130-01/ x_refsource_MISC
Same Patch Batch · ELECOM CO.,LTD. · 2021-12-01 · 13 CVEs total
| CVE-2021-20852 | elecom lan 缓冲区错误漏洞 | |
| CVE-2021-20853 | elecom lan 操作系统命令注入漏洞 | |
| CVE-2021-20854 | elecom lan 操作系统命令注入漏洞 | |
| CVE-2021-20855 | elecom lan 跨站脚本漏洞 | |
| CVE-2021-20856 | elecom lan 跨站脚本漏洞 | |
| CVE-2021-20857 | elecom lan 跨站脚本漏洞 | |
| CVE-2021-20858 | elecom lan 跨站脚本漏洞 | |
| CVE-2021-20859 | elecom lan 操作系统命令注入漏洞 | |
| CVE-2021-20860 | elecom lan 跨站请求伪造漏洞 | |
| CVE-2021-20861 | elecom lan 授权问题漏洞 | |
| CVE-2021-20862 | Elecom Edwrc 访问控制错误漏洞 | |
| CVE-2021-20864 | Elecom Edwrc 安全漏洞 |
IV. Related Vulnerabilities
V. Comments for CVE-2021-20863
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