#VU20295 Path traversal in WP Fastest Cache - CVE-2019-13635

Vulnerability identifier: #VU20295

Vulnerability risk: Medium

CVSSv4.0: 2.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Green]

CVE-ID: CVE-2019-13635

CWE-ID: CWE-22

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
WP Fastest Cache
Web applications / Modules and components for CMS

Vendor: Emre Vona

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

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

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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.