Vulnerability Description
Improper neutralization of HTTP request headers for scripting syntax vulnerability in the Web GUI of RTX830 Rev.15.02.17 and earlier, NVR510 Rev.15.01.18 and earlier, NVR700W Rev.15.00.19 and earlier, and RTX1210 Rev.14.01.38 and earlier allows a remote authenticated attacker to obtain sensitive information via a specially crafted web page.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Yamaha | Rtx830 Firmware | <= 15.02.17 |
| Yamaha | Rtx830 | - |
| Yamaha | Nvr510 Firmware | <= 15.01.18 |
| Yamaha | Nvr510 | - |
| Yamaha | Nvr700W Firmware | <= 15.00.19 |
| Yamaha | Nvr700W | - |
| Yamaha | Rtx1210 Firmware | <= 14.01.38 |
| Yamaha | Rtx1210 | - |
| Ntt-West | Biz Box Rtx830 Firmware | <= 15.02.17 |
| Ntt-West | Biz Box Rtx830 | - |
| Ntt-West | Biz Box Nvr510 Firmware | < 15.01.18 |
| Ntt-West | Biz Box Nvr510 | - |
| Ntt-West | Biz Box Nvr700W Firmware | <= 15.00.19 |
| Ntt-West | Biz Box Nvr700W | - |
| Ntt-West | Biz Box Rtx1210 Firmware | <= 14.01.38 |
| Ntt-West | Biz Box Rtx1210 | - |
Related Weaknesses (CWE)
References
- http://www.rtpro.yamaha.co.jp/RT/FAQ/Security/JVNVU91161784.htmlMitigationVendor Advisory
- https://business.ntt-east.co.jp/topics/2021/11_09.htmlMitigationVendor Advisory
- https://jvn.jp/en/vu/JVNVU91161784/index.htmlMitigationThird Party Advisory
- https://www.ntt-west.co.jp/smb/kiki_info/info/211109.htmlMitigationVendor Advisory
- http://www.rtpro.yamaha.co.jp/RT/FAQ/Security/JVNVU91161784.htmlMitigationVendor Advisory
- https://business.ntt-east.co.jp/topics/2021/11_09.htmlMitigationVendor Advisory
- https://jvn.jp/en/vu/JVNVU91161784/index.htmlMitigationThird Party Advisory
- https://www.ntt-west.co.jp/smb/kiki_info/info/211109.htmlMitigationVendor Advisory
FAQ
What is CVE-2021-20844?
CVE-2021-20844 is a vulnerability with a CVSS score of 5.7 (MEDIUM). Improper neutralization of HTTP request headers for scripting syntax vulnerability in the Web GUI of RTX830 Rev.15.02.17 and earlier, NVR510 Rev.15.01.18 and earlier, NVR700W Rev.15.00.19 and earlier,...
How severe is CVE-2021-20844?
CVE-2021-20844 has been rated MEDIUM with a CVSS base score of 5.7/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2021-20844?
Check the references section above for vendor advisories and patch information. Affected products include: Yamaha Rtx830 Firmware, Yamaha Rtx830, Yamaha Nvr510 Firmware, Yamaha Nvr510, Yamaha Nvr700W Firmware.