Vulnerability Report

CVE-2021-20844

Title: Improper neutralization of HTTP request headers for scripting syntax in Yamaha routers/NVRs

vb

Proof Of Concept

No public PoC currently indexed for CVE-2021-20844.

CWE Category CWE-116
Published Date Nov 24, 2021
Modified Date Nov 21, 2024
Exploit Status Not Found
Score 5.7 CVSS v3.1
Exploit Probability (EPSS)
0.34%

Vulnerability Summary

CVE-2021-20844: 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.

Impacted Vendors

Y
yamaha 4
N
ntt-west 4

Reference Links

http://www.rtpro.yamaha.co.jp/RT/FAQ/Security/JVNVU91161784.html https://business.ntt-east.co.jp/topics/2021/11_09.html https://jvn.jp/en/vu/JVNVU91161784/index.html https://www.ntt-west.co.jp/smb/kiki_info/info/211109.html http://www.rtpro.yamaha.co.jp/RT/FAQ/Security/JVNVU91161784.html https://business.ntt-east.co.jp/topics/2021/11_09.html https://jvn.jp/en/vu/JVNVU91161784/index.html https://www.ntt-west.co.jp/smb/kiki_info/info/211109.html
CVSS v3.1
Source Entity [email protected]
Severity MEDIUM
5.7
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
REQUIRED
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
CVSS v2.0
Source Entity [email protected]
Severity LOW
3.5
Access Vector
N/A
Authentication
N/A
RAW VECTOR AV:N/AC:M/Au:S/C:P/I:N/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2021-20844 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

MODIFIED

Vulnerability data or affected products updated.

PUBLISHED

Vulnerability first announced in NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity LOW
Privileges N/A
Interaction REQUIRED
CVSS Vector String CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N

Affected Stack

No specific products linked.