CVE-2024-8480: sirv Auth Bypass — Fix

Description

The Image Optimizer, Resizer and CDN – Sirv plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'sirv_save_prevented_sizes' function in all versions up to, and including, 7.2.7. This makes it possible for authenticated attackers, with Contributor-level access and above, to exploit the 'sirv_upload_file_by_chunks_callback' function, which lacks proper file type validation, allowing attackers to upload arbitrary files on the affected site's server which may make remote code execution possible.

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CVSS v3.1 Score

8.8

HIGH

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-862 Missing Authorization

Affected Products

Vendor	Product	Versions
sirv	sirv	< 7.2.8

References

Advisories & Patches

https://plugins.trac.wordpress.org/changeset/3115018/

Other References

https://plugins.trac.wordpress.org/browser/sirv/tags/7.2.7/sirv.php#L6331 https://plugins.trac.wordpress.org/browser/sirv/trunk/sirv.php?rev=3103410#L4647 https://www.wordfence.com/threat-intel/vulnerabilities/id/1e3e628f-b5e7-40fd-9d34-4a3b23e1e0e7?source=cve

Frequently Asked Questions

What is CVE-2024-8480? +

The Image Optimizer, Resizer and CDN – Sirv plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the 'sirv_save_prevented_sizes' function in all versions up to, and including, 7.2.7. This makes it possible for authenticated attackers, with Contributor-level access and above, to exploit the 'sirv_upload_file_by_chunks_callback' function, which lacks proper file type validation, allowing attackers to upload arbitrary files on the affected site's server which may make remote code execution possible. It has a CVSS v3.1 base score of 8.8 (HIGH).

How severe is CVE-2024-8480? +

CVE-2024-8480 has a CVSS v3.1 score of 8.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-8480? +

CVE-2024-8480 affects products from sirv, specifically: sirv. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-8480? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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