#VU19318 Permissions, Privileges, and Access Controls in ProFTPD - CVE-2019-12815

Vulnerability identifier: #VU19318

Vulnerability risk: Medium

CVSSv4.0: 5.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/U:Green]

CVE-ID: CVE-2019-12815

CWE-ID: CWE-284

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
ProFTPD
Server applications / File servers (FTP/HTTP)

Vendor: ProFTPD

Description

The vulnerability allows a remote attacker to gain access to sensitive information.

The vulnerability exists due to the application does not honor <Limit READ> and <Limit WRITE> configurations for SITE CPFR and SITE CPTO commands in the mod_copy module. A remote authenticated user with read permissions (e.g. user anonymous) can read contents of an arbitrary file on the server.

Mitigation
Install update from vendor's website.

Vulnerable software versions

ProFTPD: 1.2.0 - 1.3.6

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External links
https://bugs.proftpd.org/show_bug.cgi?id=4372
https://github.com/proftpd/proftpd/pull/816
https://tbspace.de/cve201912815proftpd.html

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote authenticated user via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability. However, proof of concept for this vulnerability is available.