PT-2023-31013 · WordPress · Crayon Syntax Highlighter

István Márton + 1 · Published 2023-09-11 · Updated 2023-09-19 · CVE-2023-4893

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 Crayon Syntax Highlighter plugin for WordPress versions up to, and including, 2.8.4

Description The issue allows authenticated attackers with contributor-level permissions or above to make web requests to arbitrary locations originating from the web application via the crayon shortcode. This can be used to query and modify information from internal services.

Recommendations For versions up to, and including, 2.8.4, update to a version higher than 2.8.4 to resolve the issue. As a temporary workaround, consider restricting access to the crayon shortcode for users with contributor-level permissions or above until a patch is available.

Fix

SSRF

Weakness Enumeration

CWE-918

Related Identifiers

CVE-2023-4893

Affected Products

Crayon Syntax Highlighter

References · 7

• https://nvd.nist.gov/vuln/detail/CVE-2023-4893 · Security Note
• https://osv.dev/vulnerability/CVE-2023-4893 · Vendor Advisory
• https://t.me/cvenotify/58043 · Telegram Post
• https://t.me/cvenotify/58075 · Telegram Post
• https://twitter.com/CVEnew/status/1701420512478457989 · Twitter Post
• https://wordfence.com/threat-intel/vulnerabilities/id/527f75f1-6361-4e16-8ae4-d38ca4589811?source=cve · Note
• https://plugins.trac.wordpress.org/browser/crayon-syntax-highlighter/trunk/crayon_highlighter.class.php#L83 · Note