PT-2023-17652 · WordPress · Essential Blocks

Marco Wotschka · Published 2023-06-09 · Updated 2023-06-15 · CVE-2023-2083

Positive Technologies (AI Summary)

CVSS v3.1

4.3

Medium

Base vector

AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Name of the Vulnerable Software and Affected Versions The Essential Blocks plugin for WordPress versions up to, and including, 4.0.6

Description The issue arises from a missing capability check on the save function, allowing unauthorized use of functionality. This enables subscriber-level attackers to save plugin settings. Although a nonce check is present, it can be bypassed by not providing a nonce, which results in the nonce verification being skipped.

Recommendations For versions up to, and including, 4.0.6, update to a version that includes a capability check on the save function to prevent unauthorized access. As a temporary workaround, consider restricting access to the save function until a patch is available.

Fix

Missing Authorization

Weakness Enumeration

CWE-862

Related Identifiers

CVE-2023-2083

Affected Products

Essential Blocks

References · 6

• https://nvd.nist.gov/vuln/detail/CVE-2023-2083 · Security Note
• https://plugins.trac.wordpress.org/changeset?sfp_email=&sfph_mail=&reponame=&new=2900595%40essential-blocks%2Ftrunk&old=2900029%40essential-blocks%2Ftrunk&sfp_email=&sfph_mail=#file2 · Patch
• https://osv.dev/vulnerability/CVE-2023-2083 · Vendor Advisory
• https://plugins.trac.wordpress.org/browser/essential-blocks/tags/4.0.6/includes/Admin/Admin.php · Patch
• https://t.me/cvenotify/52351 · Telegram Post
• https://wordfence.com/threat-intel/vulnerabilities/id/f8bf0933-1c97-4374-b323-c55b91fe4d27?source=cve · Note