CVE-2021-20844

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

Last Modified on: 11/30/2021 07:12:00 AM UTC

CVE-2021-20844

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

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

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.

  • CVE-2021-20844 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: 5.7 - MEDIUM

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

CVSS2 Score: 3.5 - LOW

Access
Vector ⓘ		 Access
Complexity		 Authentication
NETWORK MEDIUM SINGLE
Confidentiality
Impact		 Integrity
Impact		 Availability
Impact
PARTIAL NONE 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 @CVEreport CVE-2021-20844 : Improper neutralization of HTTP request headers for scripting syntax vulnerability in the Web GUI… twitter.com/i/web/status/1… 2021-11-24 10:44:22
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