Multiple vulnerabilities in Popup Builder – Responsive WordPress Pop up – Subscription & Newsletter plugin



Risk Medium
Patch available YES
Number of vulnerabilities 2
CVE-ID CVE-2020-10196
CVE-2020-10195
CWE-ID CWE-79
CWE-284
Exploitation vector Network
Public exploit N/A
Vulnerable software
 Popup Builder - Responsive WordPress Pop up - Subscription & Newsletter
Web applications / Modules and components for CMS

Vendor Sygnoos

Security Bulletin

This security bulletin contains information about 2 vulnerabilities.

1) Stored cross-site scripting

EUVDB-ID: #VU26054

Risk: Low

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N/E:U/U:Clear]

CVE-ID: CVE-2020-10196

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

Exploit availability: No

Description

The disclosed vulnerability allows a remote attacker to perform cross-site scripting (XSS) attacks.

The vulnerability exists due to insufficient sanitization of user-supplied data passed via the "allPopupData" parameter in "wp-admin/admin-ajax.php". A remote attacker can inject and execute arbitrary HTML and script code in user's browser in context of vulnerable website.

Successful exploitation of this vulnerability may allow a remote attacker to steal potentially sensitive information, change appearance of the web page, perform phishing and drive-by-download attacks.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Popup Builder - Responsive WordPress Pop up - Subscription & Newsletter: 1.1 - 3.63

CPE2.3 External links

https://wpvulndb.com/vulnerabilities/10127/
https://www.wordfence.com/blog/2020/03/vulnerabilities-patched-in-popup-builder-plugin-affecting-over-100000-sites/


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.

2) Improper access control

EUVDB-ID: #VU26055

Risk: Medium

CVSSv4.0: 1.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2020-10195

CWE-ID: CWE-284 - Improper Access Control

Exploit availability: No

Description

The vulnerability allows a remote attacker to gain unauthorized access to otherwise restricted functionality.

The vulnerability exists due to improper access restrictions in several actions. A remote authenticated attacker can send a specially crafted HTTP POST request and export a list of all newsletter subscribers, export system configuration information and grant themselves access to various features of the plugin.

The vulnerable actions included:

  • add_action('admin_post_csv_file', array($this, 'getSubscribersCsvFile'));
  • add_action('admin_post_sgpb_system_info', array($this, 'getSystemInfoFile'));
  • add_action('admin_post_sgpbSaveSettings', array($this, 'saveSettings'), 10, 1);

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Popup Builder - Responsive WordPress Pop up - Subscription & Newsletter: 1.1 - 3.63

CPE2.3 External links

https://wpvulndb.com/vulnerabilities/10127/
https://www.wordfence.com/blog/2020/03/vulnerabilities-patched-in-popup-builder-plugin-affecting-ove...


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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