Vulnerability identifier: #VU35861

Vulnerability risk: High

CVSSv3.1: 8.5 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C]

CVE-ID: CVE-2019-12585

CWE-ID: CWE-77

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
pfsense
Server applications / IDS/IPS systems, Firewalls and proxy servers

Vendor: Rubicon Communications

Description

The vulnerability allows a remote non-authenticated attacker to execute arbitrary code.

Apcupsd 0.3.91_5, as used in pfSense through 2.4.4-RELEASE-p3 and other products, has an Arbitrary Command Execution issue in apcupsd_status.php.

Mitigation
Install update from vendor's website.

Vulnerable software versions

pfsense: 2.4.0 - 2.4.3_1

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External links
http://ctrsec.io/index.php/2019/05/28/cve-2019-12584-12585-command-injection-vulnerability-on-pfsense-2-4-4-release-p3/
http://github.com/pfsense/FreeBSD-ports/commit/b492c0ea47aba8dde2f14183e71498ba207594e3
http://redmine.pfsense.org/issues/9556

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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.