[Japanese]

JVNDB-2021-000006

Multiple vulnerabilities in Aterm WF800HP, Aterm WG2600HP, and Aterm WG2600HP2

Overview

Aterm WF800HP, Aterm WG2600HP, and Aterm WG2600HP2 provided by NEC Corporation contain multiple vulnerabilities.

Aterm WF800HP:
*Cross-site Scripting (CWE-79) - CVE-2021-20620

Aterm WG2600HP and Aterm WG2600HP2:
*Improper Access Control (CWE-284) - CVE-2017-12575
*Cross-Site Request Forgery (CWE-352) - CVE-2021-20621
*Cross-site Scripting (CWE-79) - CVE-2021-20622

CVE-2021-20620
Satoru Nagaoka of Cyber Defense Institute, Inc. reported this vulnerability to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.

CVE-2021-20621, CVE-2021-20622
Noriaki Iwasaki of Cyber Defense Institute, Inc. reported these vulnerabilities to IPA.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.
CVSS Severity (What is CVSS?)

CVSS V3 Severity:
Base Metrics 7.5 (High) [IPA Score]
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
  • Confidentiality Impact: High
  • Integrity Impact: None
  • Availability Impact: None
CVSS V2 Severity:
Base Metrics 4.3 (Medium) [IPA Score]
  • Access Vector: Network
  • Access Complexity: Medium
  • Authentication: None
  • Confidentiality Impact: Partial
  • Integrity Impact: None
  • Availability Impact: None
The above CVSS base scores have been assigned for CVE-2021-20620

CVSS V3 Severity:
Base Metrics: 7.5 (High) [JPCERT/CC Score]
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: None
  • Scope: Unchanged
  • Confidentiality Impact: High
  • Integrity Impact: None
  • Availability Impact: None
CVSS V2 Severity:
Base Metrics: 4.3 (Medium) [JPCERT/CC Score]
  • Access Vector: Network
  • Access Complexity: Medium
  • Authentication: None
  • Confidentiality Impact: Partial
  • Integrity Impact: None
  • Availability Impact: None
The above CVSS base scores have been assigned for CVE-2017-12575

CVSS V3 Severity:
Base Metrics: 4.3 (Medium) [JPCERT/CC Score]
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: Required
  • Scope: Unchanged
  • Confidentiality Impact: None
  • Integrity Impact: Low
  • Availability Impact: None
CVSS V2 Severity:
Base Metrics: 2.6 (Low) [JPCERT/CC Score]
  • Access Vector: Network
  • Access Complexity: High
  • Authentication: None
  • Confidentiality Impact: None
  • Integrity Impact: Partial
  • Availability Impact: None
The above CVSS base scores have been assigned for CVE-2021-20621

CVSS V3 Severity:
Base Metrics: 6.1 (Medium) [JPCERT/CC Score]
  • Attack Vector: Network
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: Required
  • Scope: Changed
  • Confidentiality Impact: Low
  • Integrity Impact: Low
  • Availability Impact: None
CVSS V2 Severity:
Base Metrics: 2.6 (Low) [JPCERT/CC Score]
  • Access Vector: Network
  • Access Complexity: High
  • Authentication: None
  • Confidentiality Impact: None
  • Integrity Impact: Partial
  • Availability Impact: None
The above CVSS base scores have been assigned for CVE-2021-20622
Affected Products


NEC Corporation
  • Aterm WG2600HP firmware Ver1.0.13 and earlier
  • Aterm WG2600HP2 firmware Ver1.0.3 and earlier
  • Aterm WF800HP firmware all versions

Impact

*An arbitrary script may be executed on the user's web browser - CVE-2021-20620
*A remote attacker may obtain and/or alter the settings stored in the device - CVE-2017-12575
*If a user accesses a specially crafted page while logged in, unintended operations may be performed - CVE-2021-20621
*An arbitrary script may be executed on the logged in user's web browser - CVE-2021-20622
Solution

[Apply workaround]
For the users of Aterm WF800HP:
Applying the following workaround may mitigate the impacts of the vulnerability.

*When accessing a website, use a URL obtained from a trusted source and register it to the bookmark. For subsequent accesses, use the URL registered in the bookmark.

[Update the firmware]
For the users of Aterm WG2600HP and Aterm WG2600HP2:
Update the firmware to the latest version according to the information provided by the developer.
Vendor Information

NEC Corporation
CWE (What is CWE?)

  1. Permissions(CWE-264) [IPA Evaluation]
  2. Cross-Site Request Forgery(CWE-352) [IPA Evaluation]
  3. Cross-site Scripting(CWE-79) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2017-12575
  2. CVE-2021-20620
  3. CVE-2021-20621
  4. CVE-2021-20622
References

  1. JVN : JVN#38248512
  2. National Vulnerability Database (NVD) : CVE-2021-20620
  3. National Vulnerability Database (NVD) : CVE-2021-20621
  4. National Vulnerability Database (NVD) : CVE-2021-20622
  5. National Vulnerability Database (NVD) : CVE-2017-12575
Revision History

  • [2021/01/22]
      Web page was published
  • [2021/02/03]
      Affected Products : Content was modified

Date Public2021/01/22
Date First Published2021/01/22
Date Last Updated2021/02/03