Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

Go to Calendar     Go to Press Room     Go to Newsletters subscription

Search

CVE-2021-20864

Severity CVSS v4.0:
Pending analysis
Type:
Unavailable / Other
Publication date:
01/12/2021
Last modified:
12/07/2022

Description

Improper access control vulnerability in ELECOM 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 network-adjacent unauthenticated attacker to bypass access restriction, and to start the telnet service and execute an arbitrary OS command via unspecified vectors.

Impact

Vector 3.x
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 8.80 HIGH
Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Adjacent
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x
8.80
Severity 3.x
HIGH
Vector 2.0
AV:A/AC:L/Au:N/C:C/I:C/A:C CVSS v2.0 Severity and Metrics:

Base Score: 8.30 HIGH
Vector: AV:A/AC:L/Au:N/C:C/I:C/A:C

Attack Vector (AV): Adjacent
Attack Complexity (AC): Low
Authentication (Au): None
Confidentiality (C): Complete
Integrity (I): Complete
Availability (A): Complete

Base Score 2.0
8.30
Severity 2.0
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:o:elecom:wrc-1167gst2_firmware:*:*:*:*:*:*:*:* 1.25 (including)
cpe:2.3:h:elecom:wrc-1167gst2:-:*:*:*:*:*:*:*
cpe:2.3:o:elecom:wrc-1167gst2a_firmware:*:*:*:*:*:*:*:* 1.25 (including)
cpe:2.3:h:elecom:wrc-1167gst2a:-:*:*:*:*:*:*:*
cpe:2.3:o:elecom:wrc-1167gst2h_firmware:*:*:*:*:*:*:*:* 1.25 (including)
cpe:2.3:h:elecom:wrc-1167gst2h:-:*:*:*:*:*:*:*
cpe:2.3:o:elecom:wrc-2533gs2-b_firmware:*:*:*:*:*:*:*:* 1.52 (including)
cpe:2.3:h:elecom:wrc-2533gs2-b:-:*:*:*:*:*:*:*
cpe:2.3:o:elecom:wrc-2533gs2-w_firmware:*:*:*:*:*:*:*:* 1.52 (including)
cpe:2.3:h:elecom:wrc-2533gs2-w:-:*:*:*:*:*:*:*
cpe:2.3:o:elecom:wrc-1750gs_firmware:*:*:*:*:*:*:*:* 1.03 (including)
cpe:2.3:h:elecom:wrc-1750gs:-:*:*:*:*:*:*:*
cpe:2.3:o:elecom:wrc-1750gsv_firmware:*:*:*:*:*:*:*:* 2.11 (including)
cpe:2.3:h:elecom:wrc-1750gsv:-:*:*:*:*:*:*:*
cpe:2.3:o:elecom:wrc-1900gst_firmware:*:*:*:*:*:*:*:* 1.03 (including)

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools