CVE-2021-20090
Quick assessment
Affected
n/a Buffalo WSR-2533DHPL2, Buffalo WSR-2533DHP3
Exploitation
Confirmed exploitation in the wild; remediate immediately
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
Buffalo WSR-2533DHPL2是日本Buffalo公司的一个路由器。 Buffalo WSR-2533DHPL2 1.02存在路径遍历漏洞，该漏洞源于web界面处理目录遍历序列时出现输入验证错误。
Public Exploits 1
Nuclei · 1
CVE-2021-20090.yaml [template]
In-the-Wild Activity Observed
cisa_kev · confirmed
Possible ATT&CK Techniques 1 AI
T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2021-20090
Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A path traversal vulnerability in the web interfaces of Buffalo WSR-2533DHPL2 firmware version <= 1.02 and WSR-2533DHP3 firmware version <= 1.24 could allow unauthenticated remote attackers to bypass authentication.
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
Buffalo WSR-2533DHPL2 路径遍历漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Buffalo WSR-2533DHPL2是日本Buffalo公司的一个路由器。 Buffalo WSR-2533DHPL2 1.02存在路径遍历漏洞，该漏洞源于web界面处理目录遍历序列时出现输入验证错误。
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)
Shenlong Deep Dive — AI Deep Analysis
10-question deep dive: root cause, exploitation, mitigation, urgency. Read summary free, full version requires login.
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| - | Buffalo WSR-2533DHPL2, Buffalo WSR-2533DHP3 | WSR-2533DHPL2 <=1.02, WSR-2533DHP3 <= 1.24 | - |
|
II. Public POCs for CVE-2021-20090
| # | POC Description | Source Link | Shenlong Link |
|---|---|---|---|
| 1 | Buffalo WSR-2533DHPL2 firmware version <= 1.02 and WSR-2533DHP3 firmware version <= 1.24 are susceptible to a path traversal vulnerability that could allow unauthenticated remote attackers to bypass authentication in their web interfaces. | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-20090.yaml | POC Details |
| 2 | None | https://github.com/Threekiii/Awesome-POC/blob/master/%E7%BD%91%E7%BB%9C%E8%AE%BE%E5%A4%87%E6%BC%8F%E6%B4%9E/Arcadyan%E5%9B%BA%E4%BB%B6%20image%20%E8%B7%AF%E5%BE%84%E9%81%8D%E5%8E%86%E6%BC%8F%E6%B4%9E%20CVE-2021-20090.md | POC Details |
AI-Generated POC
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Vendor Advisories for CVE-2021-20090 (1)
-
https://www.kb.cert.org/vuls/id/914124 third-party-advisory
Security Blog Posts for CVE-2021-20090 (1)
Other References for CVE-2021-20090 (1)
Same Patch Batch · n/a · 2021-04-29 · 54 CVEs total
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| CVE-2020-22807 | vtiger crm SQL注入漏洞 | |
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| CVE-2020-22808 | yii2_fecshop 跨站脚本漏洞 | |
| CVE-2021-30230 | China Mobile An Lianbao WF-1 router 操作系统命令注入漏洞 | |
| CVE-2021-30229 | China Mobile An Lianbao WF-1 router 操作系统命令注入漏洞 | |
| CVE-2021-30228 | China Mobile An Lianbao WF-1 router 操作系统命令注入漏洞 | |
| CVE-2021-30231 | China Mobile An Lianbao WF-1 router 操作系统命令注入漏洞 | |
| CVE-2021-25811 | MERCUSYS Mercury X18G 安全漏洞 | |
| CVE-2021-25810 | Mercusys Mercury X18G 跨站脚本漏洞 | |
| CVE-2021-20228 | Red Hat Ansible 信息泄露漏洞 | |
| CVE-2021-29350 | 发货100-设计素材下载系统 SQL注入漏洞 | |
| CVE-2021-30227 | Emlog 跨站脚本漏洞 | |
| CVE-2021-28280 | Phpfusion 跨站脚本漏洞 | |
| CVE-2021-30224 | Rukovoditel 跨站请求伪造漏洞 | |
| CVE-2021-30219 | samurai 代码问题漏洞 | |
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V. Comments for CVE-2021-20090
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