CVE-2021-20843

Published on: 11/24/2021 12:00:00 AM UTC

Last Modified on: 11/30/2021 07:11:00 AM UTC

CVE-2021-20843

Source: Mitre Source: Nist Print: PDF PDF
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Certain versions of Biz Box Nvr510 from Ntt-west contain the following vulnerability:

Cross-site script inclusion 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 alter the settings of the product via a specially crafted web page.

  • CVE-2021-20843 has been assigned by URL Logo [email protected] to track the vulnerability - currently rated as MEDIUM severity.
  • Affected Vendor/Software: URL Logo Yamaha Corporation - RTX830, NVR510, NVR700W, RTX1210 version RTX830 Rev.15.02.17 and earlier, NVR510 Rev.15.01.18 and earlier, NVR700W Rev.15.00.19 and earlier, RTX1210 Rev.14.01.38 and earlier

CVSS3 Score: 5.4 - MEDIUM

Attack
Vector ⓘ		 Attack
Complexity		 Privileges
Required		 User
Interaction
NETWORK LOW LOW REQUIRED
Scope Confidentiality
Impact		 Integrity
Impact		 Availability
Impact
CHANGED LOW LOW NONE

CVSS2 Score: 3.5 - LOW

Access
Vector ⓘ		 Access
Complexity		 Authentication
NETWORK MEDIUM SINGLE
Confidentiality
Impact		 Integrity
Impact		 Availability
Impact
NONE PARTIAL NONE

CVE References

Description Tags ⓘ Link
【NTT西日本】Biz Boxルータをご利用のお客さまへ - 法人・企業向けICTサービス www.ntt-west.co.jp
text/html
 URL Logo MISC www.ntt-west.co.jp/smb/kiki_info/info/211109.html
ヤマハルータをご利用のお客さまへ｜お知らせ｜法人のお客さま｜ NTT東日本 business.ntt-east.co.jp
text/html
 URL Logo MISC business.ntt-east.co.jp/topics/2021/11_09.html
FAQ for YAMAHA RT Series / Security www.rtpro.yamaha.co.jp
text/html
 URL Logo MISC www.rtpro.yamaha.co.jp/RT/FAQ/Security/JVNVU91161784.html
JVNVU#91161784: Multiple vulnerabilities in multiple Yamaha routers jvn.jp
text/xml
 URL Logo MISC jvn.jp/en/vu/JVNVU91161784/index.html
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Known Affected Configurations (CPE V2.3)

Type Vendor Product Version Update Edition Language
HardwareNtt-westBiz Box Nvr510-AllAllAll
Operating
System		Ntt-westBiz Box Nvr510 FirmwareAllAllAllAll
HardwareNtt-westBiz Box Nvr700w-AllAllAll
Operating
System		Ntt-westBiz Box Nvr700w FirmwareAllAllAllAll
HardwareNtt-westBiz Box Rtx1210-AllAllAll
Operating
System		Ntt-westBiz Box Rtx1210 FirmwareAllAllAllAll
HardwareNtt-westBiz Box Rtx830-AllAllAll
Operating
System		Ntt-westBiz Box Rtx830 FirmwareAllAllAllAll
HardwareYamahaNvr510-AllAllAll
Operating
System		YamahaNvr510 FirmwareAllAllAllAll
HardwareYamahaNvr700w-AllAllAll
Operating
System		YamahaNvr700w FirmwareAllAllAllAll
HardwareYamahaRtx1210-AllAllAll
Operating
System		YamahaRtx1210 FirmwareAllAllAllAll
HardwareYamahaRtx830-AllAllAll
Operating
System		YamahaRtx830 FirmwareAllAllAllAll
  • cpe:2.3:h:ntt-west:biz_box_nvr510:-:*:*:*:*:*:*:*:
  • cpe:2.3:o:ntt-west:biz_box_nvr510_firmware:*:*:*:*:*:*:*:*:
  • cpe:2.3:h:ntt-west:biz_box_nvr700w:-:*:*:*:*:*:*:*:
  • cpe:2.3:o:ntt-west:biz_box_nvr700w_firmware:*:*:*:*:*:*:*:*:
  • cpe:2.3:h:ntt-west:biz_box_rtx1210:-:*:*:*:*:*:*:*:
  • cpe:2.3:o:ntt-west:biz_box_rtx1210_firmware:*:*:*:*:*:*:*:*:
  • cpe:2.3:h:ntt-west:biz_box_rtx830:-:*:*:*:*:*:*:*:
  • cpe:2.3:o:ntt-west:biz_box_rtx830_firmware:*:*:*:*:*:*:*:*:
  • cpe:2.3:h:yamaha:nvr510:-:*:*:*:*:*:*:*:
  • cpe:2.3:o:yamaha:nvr510_firmware:*:*:*:*:*:*:*:*:
  • cpe:2.3:h:yamaha:nvr700w:-:*:*:*:*:*:*:*:
  • cpe:2.3:o:yamaha:nvr700w_firmware:*:*:*:*:*:*:*:*:
  • cpe:2.3:h:yamaha:rtx1210:-:*:*:*:*:*:*:*:
  • cpe:2.3:o:yamaha:rtx1210_firmware:*:*:*:*:*:*:*:*:
  • cpe:2.3:h:yamaha:rtx830:-:*:*:*:*:*:*:*:
  • cpe:2.3:o:yamaha:rtx830_firmware:*:*:*:*:*:*:*:*:

Social Mentions

Source Title Posted (UTC)
Twitter Icon @avalon1982 >脆弱性情報のポータルサイトであるJVNによれば、「RTX1210」「RTX830」「NVR700W」「NVR510」に「クロスサイトスクリプトインクルージョン（XSSI）」の脆弱性「CVE-2021-20843」や、「HTTPレ… twitter.com/i/web/status/1… 2021-11-09 17:35:25
Twitter Icon @CVEreport CVE-2021-20843 : Cross-site script inclusion vulnerability in the Web GUI of RTX830 Rev.15.02.17 and earlier, NVR51… twitter.com/i/web/status/1… 2021-11-24 10:43:55
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