CVE-2024-8480
Published: 06 September 2024
Summary
CVE-2024-8480 is a high-severity Missing Authorization (CWE-862) vulnerability in Sirv Sirv. Its CVSS base score is 8.8 (High).
Operationally, ranked in the top 10.3% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog.
Deeper analysis
The Image Optimizer, Resizer and CDN – Sirv plugin for WordPress is affected by CVE-2024-8480, a missing capability check (CWE-862) on the sirv_save_prevented_sizes function in all versions through 7.2.7. This flaw permits authenticated users to invoke the sirv_upload_file_by_chunks_callback handler, which performs no file-type validation, enabling upload of arbitrary files to the server and potential remote code execution. The vulnerability carries a CVSS 3.1 score of 8.8.
Authenticated attackers holding Contributor or higher privileges on an affected WordPress site can exploit the issue over the network without user interaction to upload malicious files and achieve code execution or other impacts on the host.
Public references point to code-level changesets in the WordPress plugin repository that address the missing authorization and validation checks, along with a detailed entry from Wordfence tracking the flaw.
EPSS for the CVE stands at 0.0476 after reaching a recorded peak of 0.0784.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2024-49211
Vulnerability details
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…
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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.
- CWE(s)
Related Threats
No named actor attribution yet. ATT&CK technique mapping in progress for this CVE.
Affected Assets
Mitigating Controls
Likely Mitigating Controls AI
Per-CVE control mapping for this CVE has not run yet; the list below is derived from the weakness types (CWEs) cited in the NVD entry.
Requiring an access control policy ensures authorization checks are defined and applied for critical functions.
Reviews of access controls detect missing authorization checks on critical functions or resources.
Documenting permitted unauthenticated actions prevents missing authorization by making all exceptions explicit and subject to organizational review.
Requiring attribute association with information prevents authorization from being performed without necessary security or privacy context.
Mandating authorization prior to allowing remote connections addresses missing authorization for remote access.
Mandating authorization before wireless connections are allowed prevents missing authorization for wireless access.
The control requires authorization before allowing mobile device connections, directly mitigating missing authorization for system access.
Requiring approvals for account creation and specifying authorizations ensures authorization is not missing for system access.