Remote code execution PHOENIX CONTACT mGuard

1) Use-after-free

EUVDB-ID: #VU6325

Risk: High

CVSSv4.0: 6.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2017-5441

CWE-ID: CWE-416 - Use After Free

Exploit availability: No

Description

The vulnerability allows a remote attacker to execute arbitrary code on the target system.

The vulnerability exists due to use-after-free error when holding a selection during scroll events. A remote attacker can trigger memory corruption and execute arbitrary code on the target system.

Successful exploitation of the vulnerability may allow an attacker to compromise vulnerable system.

Mitigation

Update to version 8.6.1.

Vulnerable software versions

MGUARD RS4000 4G VPN: All versions

MGUARD RS2000 4G VPN: All versions

MGUARD CORE TX VPN: All versions

MGUARD RS4000 3G VPN: All versions

MGUARD RS2000 3G VPN: All versions

MGUARD SMART2 VPN: All versions

MGUARD SMART2: All versions

MGUARD RS4004 TX/DTX VPN: All versions

MGUARD RS4004 TX/DTX: All versions

MGUARD RS4000 TX/TX-P: All versions

MGUARD RS4000 TX/TX VPN-M: All versions

MGUARD RS4000 TX/TX VPN: All versions

MGUARD RS4000 TX/TX: All versions

MGUARD RS2005 TX VPN: All versions

MGUARD RS2000 TX/TX-B: All versions

MGUARD RS2000 TX/TX VPN: All versions

MGUARD PCIE4000 VPN: All versions

MGUARD PCI4000 VPN: All versions

MGUARD GT/GT VPN: All versions

MGUARD GT/GT: All versions

MGUARD DELTA TX/TX VPN: All versions

MGUARD DELTA TX/TX: All versions

MGUARD CENTERPORT: All versions

CPE2.3

• cpe:2.3:h:phoenix_contact_gmbh:mguard_rs4000_4g_vpn:*:*:*:*:*:*:*:*
• cpe:2.3:h:phoenix_contact_gmbh:mguard_rs2000_4g_vpn:*:*:*:*:*:*:*:*
• cpe:2.3:h:phoenix_contact_gmbh:mguard_core_tx_vpn:*:*:*:*:*:*:*:*
• cpe:2.3:h:phoenix_contact_gmbh:mguard_rs4000_3g_vpn:*:*:*:*:*:*:*:*
• cpe:2.3:h:phoenix_contact_gmbh:mguard_rs2000_3g_vpn:*:*:*:*:*:*:*:*
• cpe:2.3:h:phoenix_contact_gmbh:mguard_smart2_vpn:*:*:*:*:*:*:*:*
• cpe:2.3:h:phoenix_contact_gmbh:mguard_smart2:*:*:*:*:*:*:*:*
• cpe:2.3:h:phoenix_contact_gmbh:mguard_rs4004_tx_dtx_vpn:*:*:*:*:*:*:*:*
• cpe:2.3:h:phoenix_contact_gmbh:mguard_rs4004_tx_dtx:*:*:*:*:*:*:*:*
• cpe:2.3:h:phoenix_contact_gmbh:mguard_rs4000_tx_tx-p:*:*:*:*:*:*:*:*
• cpe:2.3:h:phoenix_contact_gmbh:mguard_rs4000_tx_tx_vpn-m:*:*:*:*:*:*:*:*
• cpe:2.3:h:phoenix_contact_gmbh:mguard_rs4000_tx_tx_vpn:*:*:*:*:*:*:*:*
• cpe:2.3:h:phoenix_contact_gmbh:mguard_rs4000_tx_tx:*:*:*:*:*:*:*:*
• cpe:2.3:h:phoenix_contact_gmbh:mguard_rs2005_tx_vpn:*:*:*:*:*:*:*:*
• cpe:2.3:h:phoenix_contact_gmbh:mguard_rs2000_tx_tx-b:*:*:*:*:*:*:*:*
• cpe:2.3:h:phoenix_contact_gmbh:mguard_rs2000_tx_tx_vpn:*:*:*:*:*:*:*:*
• cpe:2.3:h:phoenix_contact_gmbh:mguard_pcie4000_vpn:*:*:*:*:*:*:*:*
• cpe:2.3:h:phoenix_contact_gmbh:mguard_pci4000_vpn:*:*:*:*:*:*:*:*
• cpe:2.3:h:phoenix_contact_gmbh:mguard_gt_gt_vpn:*:*:*:*:*:*:*:*
• cpe:2.3:h:phoenix_contact_gmbh:mguard_gt_gt:*:*:*:*:*:*:*:*
• cpe:2.3:h:phoenix_contact_gmbh:mguard_delta_tx_tx_vpn:*:*:*:*:*:*:*:*
• cpe:2.3:h:phoenix_contact_gmbh:mguard_delta_tx_tx:*:*:*:*:*:*:*:*
• cpe:2.3:h:phoenix_contact_gmbh:mguard_centerport:*:*:*:*:*:*:*:*

External links

https://ics-cert.us-cert.gov/advisories/ICSA-18-030-01

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.