Arbitrary file deletion in WP Fastest Cache plugin for WordPress



Published: 2019-03-10 | Updated: 2019-03-25
Risk Medium
Patch available YES
Number of vulnerabilities 1
CVE-ID CVE-2019-6726
CWE-ID CWE-22
Exploitation vector Network
Public exploit N/A
Vulnerable software
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WP Fastest Cache
Web applications / Modules and components for CMS

Vendor Emre Vona

Security Bulletin

This security bulletin contains one medium risk vulnerability.

1) Path traversal

EUVDB-ID: #VU18077

Risk: Medium

CVSSv3.1: 6.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-6726

CWE-ID: CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Exploit availability: No

Description

The vulnerability allows a remote attacker to delete arbitrary files on the target system.

The vulnerability exists due to input validation error when processing directory traversal sequences passed via Referer HTTP header within the wp_postratings_clear_cache() function. A remote attacker can send a specially crafted HTTP request and delete arbitrary .php files on the server, causing denial of service attack.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

WP Fastest Cache: 0.8.6.6 - 0.8.9.0

External links

http://0day.work/cve-2019-6726-arbitrary-file-deletion-in-wp-fastest-cache-0-8-8-1/
http://wpvulndb.com/vulnerabilities/9226/


Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.



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