PT-2024-30105 · WordPress · The Ultimate Blocks

Craig Smith + 1 · Published 2024-07-02 · Updated 2024-07-02 · CVE-2024-4268

Positive Technologies (AI Summary)

CVSS v3.1

6.4

Medium

Base vector

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

Name of the Vulnerable Software and Affected Versions The Ultimate Blocks – WordPress Blocks Plugin versions up to and including 3.1.9

Description The issue arises from insufficient input sanitization and output escaping on user-supplied attributes in the plugin's blocks, allowing authenticated attackers with contributor-level access and above to inject arbitrary web scripts in pages. These scripts will execute whenever a user accesses an injected page.

Recommendations For versions up to and including 3.1.9, update to a version that addresses the insufficient input sanitization and output escaping issue to prevent stored cross-site scripting attacks.

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2024-4268

Affected Products

The Ultimate Blocks

References · 14

• https://osv.dev/vulnerability/CVE-2024-4268 · Vendor Advisory
• https://plugins.trac.wordpress.org/changeset/3075315/ultimate-blocks · Patch
• https://plugins.trac.wordpress.org/changeset/3108401 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2024-4268 · Security Note
• https://wordpress.org/plugins/ultimate-blocks/#developers · Note
• https://wordfence.com/threat-intel/vulnerabilities/id/00b60b53-77bf-4640-bf2b-84e011014623?source=cve · Note
• https://plugins.trac.wordpress.org/browser/ultimate-blocks/trunk/src/blocks/testimonial/block.php · Note
• https://plugins.trac.wordpress.org/browser/ultimate-blocks/trunk/src/blocks/image-slider/block.php · Note
• https://plugins.trac.wordpress.org/browser/ultimate-blocks/trunk/src/blocks/advanced-heading/block.php · Note
• https://plugins.trac.wordpress.org/browser/ultimate-blocks/trunk/src/blocks/how-to/block.php · Note
• https://plugins.trac.wordpress.org/browser/ultimate-blocks/trunk/src/extensions/custom-css/class-custom-css.php?rev=3102541#L173 · Note
• https://gist.github.com/webber-naut/0a8a4f810da286392a43c4614d31712e · Note
• https://dropbox.com/scl/fi/zh7t1qsvxkxk2dfhwd7nn/Ultimate-Blocks-Stored-XSS_POC_4.20.24.mov?rlkey=ws16dcu7f6mjd3h9emsqev7jm&e=2&st=fdr7q9h7&dl=0 · Note
• https://plugins.trac.wordpress.org/browser/ultimate-blocks/trunk/src/blocks/styled-box/block.php · Note