CVE-2021-20680 : Cross-site scripting vulnerability in NEC Aterm devices (Aterm WG1900HP2 firmwar

Cross-site scripting vulnerability in NEC Aterm devices (Aterm WG1900HP2 firmware Ver.1.3.1 and earlier, Aterm WG1900HP firmware Ver.2.5.1 and earlier, Aterm WG1800HP4 firmware Ver.1.3.1 and earlier, Aterm WG1800HP3 firmware Ver.1.5.1 and earlier, Aterm WG1200HS2 firmware Ver.2.5.0 and earlier, Aterm WG1200HP3 firmware Ver.1.3.1 and earlier, Aterm WG1200HP2 firmware Ver.2.5.0 and earlier, Aterm W1200EX firmware Ver.1.3.1 and earlier, Aterm W1200EX-MS firmware Ver.1.3.1 and earlier, Aterm WG1200HS firmware all versions Aterm WG1200HP firmware all versions Aterm WF800HP firmware all versions Aterm WF300HP2 firmware all versions Aterm WR8165N firmware all versions Aterm W500P firmware all versions, and Aterm W300P firmware all versions) allows remote attackers to inject arbitrary script or HTML via unspecified vectors.

Published 2021-04-26 01:15:08

Updated 2021-05-05 21:16:20

Source JPCERT/CC

View at NVD, CVE.org

Vulnerability category: Cross site scripting (XSS)

Products affected by CVE-2021-20680

NEC » Aterm Wg1200hp Firmware
cpe:2.3:o:nec:aterm_wg1200hp_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: NEC » Aterm Wg1200hp » Version: N/A
NEC » Aterm W300p Firmware
cpe:2.3:o:nec:aterm_w300p_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: NEC » Aterm W300p » Version: N/A
NEC » Aterm Wg1900hp2 Firmware
Versions up to, including, (<=) 1.3.1
cpe:2.3:o:nec:aterm_wg1900hp2_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: NEC » Aterm Wg1900hp2 » Version: N/A
NEC » Aterm Wg1900hp Firmware
Versions up to, including, (<=) 2.5.1
cpe:2.3:o:nec:aterm_wg1900hp_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: NEC » Aterm Wg1900hp » Version: N/A
NEC » Aterm Wg1800hp4 Firmware
Versions up to, including, (<=) 1.3.1
cpe:2.3:o:nec:aterm_wg1800hp4_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: NEC » Aterm Wg1800hp4 » Version: N/A
NEC » Aterm Wg1800hp3 Firmware
Versions up to, including, (<=) 1.5.1
cpe:2.3:o:nec:aterm_wg1800hp3_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: NEC » Aterm Wg1800hp3 » Version: N/A
NEC » Aterm Wg1200hs3 Firmware
Versions up to, including, (<=) 1.1.2
cpe:2.3:o:nec:aterm_wg1200hs3_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: NEC » Aterm Wg1200hs3 » Version: N/A
NEC » Aterm Wg1200hs2 Firmware
Versions up to, including, (<=) 2.5.0
cpe:2.3:o:nec:aterm_wg1200hs2_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: NEC » Aterm Wg1200hs2 » Version: N/A
NEC » Aterm Wg1200hp3 Firmware
Versions up to, including, (<=) 1.3.1
cpe:2.3:o:nec:aterm_wg1200hp3_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: NEC » Aterm Wg1200hp3 » Version: N/A
NEC » Aterm Wg1200hp2 Firmware
Versions up to, including, (<=) 2.5.0
cpe:2.3:o:nec:aterm_wg1200hp2_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: NEC » Aterm Wg1200hp2 » Version: N/A
NEC » Aterm W1200ex Firmware
Versions up to, including, (<=) 1.3.1
cpe:2.3:o:nec:aterm_w1200ex_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: NEC » Aterm W1200ex » Version: N/A
NEC » Aterm W1200ex-ms Firmware
Versions up to, including, (<=) 1.3.1
cpe:2.3:o:nec:aterm_w1200ex-ms_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: NEC » Aterm W1200ex-ms » Version: N/A
NEC » Aterm Wg1200hs Firmware
cpe:2.3:o:nec:aterm_wg1200hs_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: NEC » Aterm Wg1200hs » Version: N/A
NEC » Aterm Wf800hp Firmware
cpe:2.3:o:nec:aterm_wf800hp_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: NEC » Aterm Wf800hp » Version: N/A
NEC » Aterm Wf300hp2 Firmware
cpe:2.3:o:nec:aterm_wf300hp2_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: NEC » Aterm Wf300hp2 » Version: N/A
NEC » Aterm Wr8165n Firmware
cpe:2.3:o:nec:aterm_wr8165n_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: NEC » Aterm Wr8165n » Version: N/A
NEC » Aterm W500p Firmware
cpe:2.3:o:nec:aterm_w500p_firmware:*:*:*:*:*:*:*:*
Matching versions
When used together with: NEC » Aterm W500p » Version: N/A

Exploit prediction scoring system (EPSS) score for CVE-2021-20680

EPSS FAQ

0.35%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 54 %

Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-20680

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
4.3	MEDIUM	AV:N/AC:M/Au:N/C:N/I:P/A:N	8.6	2.9	NIST
Access Vector: Network Access Complexity: Medium Authentication: None Confidentiality Impact: None Integrity Impact: Partial Availability Impact: None
6.1	MEDIUM	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N	2.8	2.7	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: Required Scope: Changed Confidentiality: Low Integrity: Low Availability: None

CWE ids for CVE-2021-20680

CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.

Assigned by: nvd@nist.gov (Primary)

References for CVE-2021-20680

https://jpn.nec.com/security-info/secinfo/nv21-008.html

NV21-008: セキュリティ情報 | NEC
Vendor Advisory
https://jvn.jp/en/jp/JVN67456944/index.html

JVN#67456944: Multiple vulnerabilities in multiple Aterm products
Third Party Advisory

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Vulnerability Details : CVE-2021-20680

Products affected by CVE-2021-20680

Exploit prediction scoring system (EPSS) score for CVE-2021-20680

CVSS scores for CVE-2021-20680

CWE ids for CVE-2021-20680

References for CVE-2021-20680