Path traversal in WP Fastest Cache plugin for WordPress

1) Path traversal

EUVDB-ID: #VU20295

Risk: Medium

CVSSv3.1: 4.6 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-13635

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 perform directory traversal attacks.

The vulnerability exists due to input validation error when processing directory traversal sequences in wpFastestCache.php and inc/cache.php. A remote attacker can send a specially crafted HTTP request and read arbitrary files on the system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

WP Fastest Cache: 0.8.6.6 - 0.8.9.5

External links

http://packetstormsecurity.com/files/153821/WordPress-WP-Fastest-Cache-0.8.9.5-Directory-Traversal.html
http://plugins.trac.wordpress.org/changeset/2124614
http://plugins.trac.wordpress.org/changeset/2124619
http://seclists.org/bugtraq/2019/Jul/53
http://wordpress.org/plugins/wp-fastest-cache/#developers
http://wpvulndb.com/vulnerabilities/9507

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.