Arbitrary file upload in Accesspressthemes Anonymous Post Pro
CVE-2017-16949
An issue was discovered in the AccessKeys AccessPress Anonymous Post Pro plugin through 3.1.9 for WordPress. Improper input sanitization allows the attacker to override the settings for allowed file extensions and upload file size, related to inc/cores/file-uploader.php and file-uploader/file-uploader-class.php. This allows the attacker to upload anything they want to the server, as demonstrated by an action=ap_file_upload_action&allowedExtensions[]=php request to /wp-admin/admin-ajax.php that results in a .php file upload and resultant PHP code execution.
Vulnerability class: Unrestricted File Upload
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.192 (97.2th percentile), scored .
Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 97th percentile — 97.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.192 · newest: 0.192 · change: 0.000
Affected products
Weakness classification (CWE)
Public proof-of-concept exploits
References
- www.exploit-db.com/exploits/43324/ (Exploit, VDB Entry, Third Party Advisory, exploit)
- wpvulndb.com/vulnerabilities/8977 (Exploit, VDB Entry, Third Party Advisory)
- packetstormsecurity.com/files/145398/Accesspress-Anonymous-Post-Pro-Unauthentic… (Exploit, VDB Entry, Third Party Advisory)
Frequently asked questions
- What is CVE-2017-16949?
- CVE-2017-16949 is a critical-severity vulnerability in Accesspressthemes Anonymous Post Pro, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 9.8/10. Published 2017-12-19.
- How severe is CVE-2017-16949?
- Critical severity. CVSS v3 base score is 9.8 out of 10.
- Is CVE-2017-16949 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.