Security Vulnerabilities - CVEs Published In January 2021
An issue was discovered in the PageLayer plugin before 1.1.2 for WordPress. Nearly all of the AJAX action endpoints lacked permission checks, allowing these actions to be executed by anyone authenticated on the site. This happened because nonces were used as a means of authorization, but a nonce was present in a publicly viewable page. The greatest impact was the pagelayer_save_content function that allowed pages to be modified and allowed XSS to occur.
CVSS Score
7.4
EPSS Score
0.005
Published
2021-01-01
An issue was discovered in the XCloner Backup and Restore plugin before 4.2.13 for WordPress. It gave authenticated attackers the ability to modify arbitrary files, including PHP files. Doing so would allow an attacker to achieve remote code execution. The xcloner_restore.php write_file_action could overwrite wp-config.php, for example. Alternatively, an attacker could create an exploit chain to obtain a database dump.
CVSS Score
9.9
EPSS Score
0.494
Published
2021-01-01
An issue was discovered in the Quiz and Survey Master plugin before 7.0.1 for WordPress. It made it possible for unauthenticated attackers to upload arbitrary files and achieve remote code execution. If a quiz question could be answered by uploading a file, only the Content-Type header was checked during the upload, and thus the attacker could use text/plain for a .php file.
CVSS Score
10.0
EPSS Score
0.103
Published
2021-01-01
An issue was discovered in the XCloner Backup and Restore plugin before 4.2.153 for WordPress. It allows CSRF (via almost any endpoint).
CVSS Score
9.8
EPSS Score
0.002
Published
2021-01-01
An issue was discovered in the Quiz and Survey Master plugin before 7.0.1 for WordPress. It allows users to delete arbitrary files such as wp-config.php file, which could effectively take a site offline and allow an attacker to reinstall with a WordPress instance under their control. This occurred via qsm_remove_file_fd_question, which allowed unauthenticated deletions (even though it was only intended for a person to delete their own quiz-answer files).
CVSS Score
9.9
EPSS Score
0.582
Published
2021-01-01
Insecure Deserialization in the Newsletter plugin before 6.8.2 for WordPress allows authenticated remote attackers with minimal privileges (such as subscribers) to use the tpnc_render AJAX action to inject arbitrary PHP objects via the options[inline_edits] parameter. NOTE: exploitability depends on PHP objects that might be present with certain other plugins or themes.
CVSS Score
7.5
EPSS Score
0.01
Published
2021-01-01
A Reflected Authenticated Cross-Site Scripting (XSS) vulnerability in the Newsletter plugin before 6.8.2 for WordPress allows remote attackers to trick a victim into submitting a tnpc_render AJAX request containing either JavaScript in an options parameter, or a base64-encoded JSON string containing JavaScript in the encoded_options parameter.
CVSS Score
6.5
EPSS Score
0.001
Published
2021-01-01
The Advanced Access Manager plugin before 6.6.2 for WordPress displays the unfiltered user object (including all metadata) upon login via the REST API (aam/v1/authenticate or aam/v2/authenticate). This is a security problem if this object stores information that the user is not supposed to have (e.g., custom metadata added by a different plugin).
CVSS Score
4.3
EPSS Score
0.003
Published
2021-01-01
The Advanced Access Manager plugin before 6.6.2 for WordPress allows privilege escalation on profile updates via the aam_user_roles POST parameter if Multiple Role support is enabled. (The mechanism for deciding whether a user was entitled to add a role did not work in various custom-role scenarios.)
CVSS Score
7.5
EPSS Score
0.004
Published
2021-01-01
Stored Cross-Site Scripting (XSS) vulnerabilities in the Post Grid plugin before 2.0.73 for WordPress allow remote authenticated attackers to import layouts including JavaScript supplied via a remotely hosted crafted payload in the source parameter via AJAX. The action must be set to post_grid_import_xml_layouts.
CVSS Score
7.5
EPSS Score
0.013
Published
2021-01-01