CVE-2021-20844
HPE NVR/RTX HTTP Header Injection 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.
INFO
Published Date :
Nov. 24, 2021, 4:15 p.m.
Last Modified :
Nov. 30, 2021, 7:12 a.m.
Source :
[email protected]
Remotely Exploitable :
Yes !
Impact Score :
3.6
Exploitability Score :
2.1
Affected Products
The following products are affected by CVE-2021-20844
vulnerability.
Even if cvefeed.io is aware of the exact versions of the
products
that
are
affected, the information is not represented in the table below.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2021-20844.
| URL | Resource |
|---|---|
| http://www.rtpro.yamaha.co.jp/RT/FAQ/Security/JVNVU91161784.html | Mitigation Vendor Advisory |
| https://business.ntt-east.co.jp/topics/2021/11_09.html | Mitigation Vendor Advisory |
| https://jvn.jp/en/vu/JVNVU91161784/index.html | Mitigation Third Party Advisory |
| https://www.ntt-west.co.jp/smb/kiki_info/info/211109.html | Mitigation Vendor Advisory |
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2021-20844 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2021-20844 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
-
CVE Modified by [email protected]
May. 14, 2024
Action Type Old Value New Value -
Initial Analysis by [email protected]
Nov. 30, 2021
Action Type Old Value New Value Added CVSS V2 Metadata Victim must voluntarily interact with attack mechanism Added CVSS V2 NIST (AV:N/AC:M/Au:S/C:P/I:N/A:N) Added CVSS V3.1 NIST AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N Changed Reference Type http://www.rtpro.yamaha.co.jp/RT/FAQ/Security/JVNVU91161784.html No Types Assigned http://www.rtpro.yamaha.co.jp/RT/FAQ/Security/JVNVU91161784.html Mitigation, Vendor Advisory Changed Reference Type https://business.ntt-east.co.jp/topics/2021/11_09.html No Types Assigned https://business.ntt-east.co.jp/topics/2021/11_09.html Mitigation, Vendor Advisory Changed Reference Type https://jvn.jp/en/vu/JVNVU91161784/index.html No Types Assigned https://jvn.jp/en/vu/JVNVU91161784/index.html Mitigation, Third Party Advisory Changed Reference Type https://www.ntt-west.co.jp/smb/kiki_info/info/211109.html No Types Assigned https://www.ntt-west.co.jp/smb/kiki_info/info/211109.html Mitigation, Vendor Advisory Added CWE NIST CWE-116 Added CPE Configuration AND OR *cpe:2.3:o:yamaha:rtx830_firmware:*:*:*:*:*:*:*:* versions up to (including) 15.02.17 OR cpe:2.3:h:yamaha:rtx830:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:yamaha:nvr510_firmware:*:*:*:*:*:*:*:* versions up to (including) 15.01.18 OR cpe:2.3:h:yamaha:nvr510:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:yamaha:nvr700w_firmware:*:*:*:*:*:*:*:* versions up to (including) 15.00.19 OR cpe:2.3:h:yamaha:nvr700w:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:yamaha:rtx1210_firmware:*:*:*:*:*:*:*:* versions up to (including) 14.01.38 OR cpe:2.3:h:yamaha:rtx1210:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ntt-west:biz_box_rtx830_firmware:*:*:*:*:*:*:*:* versions up to (including) 15.02.17 OR cpe:2.3:h:ntt-west:biz_box_rtx830:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ntt-west:biz_box_nvr510_firmware:*:*:*:*:*:*:*:* versions up to (excluding) 15.01.18 OR cpe:2.3:h:ntt-west:biz_box_nvr510:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ntt-west:biz_box_nvr700w_firmware:*:*:*:*:*:*:*:* versions up to (including) 15.00.19 OR cpe:2.3:h:ntt-west:biz_box_nvr700w:-:*:*:*:*:*:*:* Added CPE Configuration AND OR *cpe:2.3:o:ntt-west:biz_box_rtx1210_firmware:*:*:*:*:*:*:*:* versions up to (including) 14.01.38 OR cpe:2.3:h:ntt-west:biz_box_rtx1210:-:*:*:*:*:*:*:*
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2021-20844 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2021-20844
weaknesses.
Exploit Prediction
EPSS is a daily estimate of the probability of exploitation activity being observed over the next 30 days.
0.13 }} -0.03%
score
0.48166
percentile