CVE-2021-20852

Buffer overflow vulnerability in ELECOM LAN routers (WRH-733GBK firmware v1.02.9 and prior and WRH-733GWH firmware v1.02.9 and prior) allows a network-adjacent attacker with an administrator privilege to execute an arbitrary OS command via unspecified vectors.

CVSS v3 6.8 MEDIUM
CVSS v2.0 5.2 MEDIUM

6.8^/10

CVSS v3 : MEDIUM

V3 Legend

Vector :

Exploitability : 0.9 / Impact : 5.9

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

5.2^/10

CVSS v2.0 : MEDIUM

V2 Legend

Vector : AV:A/AC:L/Au:S/C:P/I:P/A:P

Exploitability : 5.1 / Impact : 6.4

Access Vector ADJACENT_NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

References

Link	Resource
https://jvn.jp/en/jp/JVN88993473/index.html	Third Party Advisory
https://www.elecom.co.jp/news/security/20211130-01/	Vendor Advisory
https://jvn.jp/en/jp/JVN88993473/index.html	Third Party Advisory
https://www.elecom.co.jp/news/security/20211130-01/	Vendor Advisory

Configurations

Configuration 1 (hide)

AND

cpe:2.3:o:elecom:wrh-733gbk_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:elecom:wrh-733gbk:-:*:*:*:*:*:*:*

Configuration 2 (hide)

AND

cpe:2.3:o:elecom:wrh-733gwh_firmware:*:*:*:*:*:*:*:*

cpe:2.3:h:elecom:wrh-733gwh:-:*:*:*:*:*:*:*

History

21 Nov 2024, 05:47

Type	Values Removed	Values Added
References	~~() https://jvn.jp/en/jp/JVN88993473/index.html - Third Party Advisory~~	() https://jvn.jp/en/jp/JVN88993473/index.html - Third Party Advisory
References	~~() https://www.elecom.co.jp/news/security/20211130-01/ - Vendor Advisory~~	() https://www.elecom.co.jp/news/security/20211130-01/ - Vendor Advisory

Information

Published : 2021-12-01 03:15

Updated : 2024-11-21 05:47

NVD link : CVE-2021-20852

Mitre link : CVE-2021-20852

CVE.ORG link : CVE-2021-20852

JSON object : View

Products Affected

elecom

wrh-733gbk
wrh-733gbk_firmware
wrh-733gwh
wrh-733gwh_firmware

CWE

CWE-120

Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')

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6.8 /10