CVE-2021-20860

CVSS V2 Medium 6.8 CVSS V3 High 8.8

Description

Cross-site request forgery (CSRF) vulnerability in ELECOM LAN routers (WRC-1167GST2 firmware v1.25 and prior, WRC-1167GST2A firmware v1.25 and prior, WRC-1167GST2H firmware v1.25 and prior, WRC-2533GS2-B firmware v1.52 and prior, WRC-2533GS2-W firmware v1.52 and prior, WRC-1750GS firmware v1.03 and prior, WRC-1750GSV firmware v2.11 and prior, WRC-1900GST firmware v1.03 and prior, WRC-2533GST firmware v1.03 and prior, WRC-2533GSTA firmware v1.03 and prior, WRC-2533GST2 firmware v1.25 and prior, WRC-2533GST2SP firmware v1.25 and prior, WRC-2533GST2-G firmware v1.25 and prior, and EDWRC-2533GST2 firmware v1.25 and prior) allows a remote authenticated attacker to hijack the authentication of an administrator via a specially crafted page.

Overview

CVE ID
CVE-2021-20860

Assigner
vultures@jpcert.or.jp

Vulnerability Status
Analyzed

Published Version
2021-12-01T03:15:07

Last Modified Date
2021-12-02T14:01:11

Weakness Enumerations

CWE	URL
CWE-352	http://cwe.mitre.org/data/definitions/352.html

CPE Configuration (Product)

CPE	Vulnerable	Operator	Version End
		AND
cpe:2.3:o:elecom:wrc-1167gst2_firmware::::::::	1	OR	1.25
cpe:2.3:h:elecom:wrc-1167gst2:-:::::::*	0	OR
		AND
cpe:2.3:o:elecom:wrc-1167gst2a_firmware::::::::	1	OR	1.25
cpe:2.3:h:elecom:wrc-1167gst2a:-:::::::*	0	OR
		AND
cpe:2.3:o:elecom:wrc-1167gst2h_firmware::::::::	1	OR	1.25
cpe:2.3:h:elecom:wrc-1167gst2h:-:::::::*	0	OR
		AND
cpe:2.3:o:elecom:wrc-2533gs2-b_firmware::::::::	1	OR	1.52
cpe:2.3:h:elecom:wrc-2533gs2-b:-:::::::*	0	OR
		AND
cpe:2.3:o:elecom:wrc-2533gs2-w_firmware::::::::	1	OR	1.52
cpe:2.3:h:elecom:wrc-2533gs2-w:-:::::::*	0	OR
		AND
cpe:2.3:o:elecom:wrc-1750gs_firmware::::::::	1	OR	1.03
cpe:2.3:h:elecom:wrc-1750gs:-:::::::*	0	OR
		AND
cpe:2.3:o:elecom:wrc-1750gsv_firmware::::::::	1	OR	2.11
cpe:2.3:h:elecom:wrc-1750gsv:-:::::::*	0	OR
		AND
cpe:2.3:o:elecom:wrc-1900gst_firmware::::::::	1	OR	1.03
cpe:2.3:h:elecom:wrc-1900gst:-:::::::*	0	OR
		AND
cpe:2.3:o:elecom:wrc-2533gst_firmware::::::::	1	OR	1.03
cpe:2.3:h:elecom:wrc-2533gst:-:::::::*	0	OR
		AND
cpe:2.3:o:elecom:wrc-2533gst2_firmware::::::::	1	OR	1.25
cpe:2.3:h:elecom:wrc-2533gst2:-:::::::*	0	OR
		AND
cpe:2.3:o:elecom:wrc-2533gsta_firmware::::::::	1	OR	1.03
cpe:2.3:h:elecom:wrc-2533gsta:-:::::::*	0	OR
		AND
cpe:2.3:o:elecom:wrc-2533gst2sp_firmware::::::::	1	OR	1.25
cpe:2.3:h:elecom:wrc-2533gst2sp:-:::::::*	0	OR
		AND
cpe:2.3:o:elecom:wrc-2533gst2-g_firmware::::::::	1	OR	1.25
cpe:2.3:h:elecom:wrc-2533gst2-g:-:::::::*	0	OR
		AND
cpe:2.3:o:elecom:edwrc-2533gst2_firmware::::::::	1	OR	1.25
cpe:2.3:h:elecom:edwrc-2533gst2:-:::::::*	0	OR

CVSS Version 2

Version
2.0

Vector String
AV:N/AC:M/Au:N/C:P/I:P/A:P

Access Vector
NETWORK

Access Compatibility
MEDIUM

Authentication
NONE

Confidentiality Impact
PARTIAL

Integrity Impact
PARTIAL

Availability Impact
PARTIAL

Base Score
6.8

Severity
MEDIUM

Exploitability Score
8.6

Impact Score
6.4

CVSS Version 3

Version
3.1

Vector String
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector
NETWORK

Attack Compatibility
LOW

Privileges Required
NONE

User Interaction
REQUIRED

Scope
UNCHANGED

Confidentiality Impact
HIGH

Availability Impact
HIGH

Base Score
8.8

Base Severity
HIGH

Exploitability Score
2.8

Impact Score
5.9

References

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

Sources

Source Name	Source URL
NIST	https://nvd.nist.gov/vuln/detail/CVE-2021-20860
MITRE	https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-20860

History

Created	Old Value	New Value	Data Type	Notes
2022-05-10 06:43:35				Added to TrackCVE
2022-12-05 15:20:29	2021-12-01T03:15Z	2021-12-01T03:15:07	CVE Published Date	updated
2022-12-05 15:20:29		2021-12-02T14:01:11	CVE Modified Date	updated
2022-12-05 15:20:29		Analyzed	Vulnerability Status	updated