Siemens SIMATIC CP443-1 OPC UA OPC Service Network Packet uncaught exception

CVSS Meta Temp Score
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability was found in Siemens SIMATIC CP443-1 OPC UA, SIMATIC ET 200 Open Controller CPU 1515SP PC2, SIMATIC IPC DiagMonitor, SIMATIC NET PC Software, SIMATIC RF188C, SIMATIC RF600R, SIMATIC S7-1500 CPU, SIMATIC S7-1500 Software Controller, SIMATIC WinCC OA and SIMATIC WinCC Runtime Advanced. It has been classified as problematic. Affected by this issue is some unknown functionality of the component OPC Service. This manipulation as part of Network Packet causes input validation. This vulnerability appears as CVE-2019-6575. The attack may be initiated remotely. There is no available exploit. It is advisable to implement restrictive firewalling.

Detailsinfo

A vulnerability classified as problematic was found in Siemens SIMATIC CP443-1 OPC UA, SIMATIC ET 200 Open Controller CPU 1515SP PC2, SIMATIC IPC DiagMonitor, SIMATIC NET PC Software, SIMATIC RF188C, SIMATIC RF600R, SIMATIC S7-1500 CPU, SIMATIC S7-1500 Software Controller, SIMATIC WinCC OA and SIMATIC WinCC Runtime Advanced (SCADA Software). Affected by this vulnerability is an unknown code block of the component OPC Service. The manipulation as part of a Network Packet leads to a input validation vulnerability. The CWE definition for the vulnerability is CWE-248. An exception is thrown from a function, but it is not caught. As an impact it is known to affect availability. The summary by CVE is:

A vulnerability has been identified in SIMATIC CP 443-1 OPC UA (All versions), SIMATIC ET 200SP Open Controller CPU 1515SP PC2 (incl. SIPLUS variants) (All versions < V2.7), SIMATIC HMI Comfort Outdoor Panels 7" & 15" (incl. SIPLUS variants) (All versions < V15.1 Upd 4), SIMATIC HMI Comfort Panels 4" - 22" (incl. SIPLUS variants) (All versions < V15.1 Upd 4), SIMATIC HMI KTP Mobile Panels KTP400F, KTP700, KTP700F, KTP900 and KTP900F (All versions < V15.1 Upd 4), SIMATIC IPC DiagMonitor (All versions < V5.1.3), SIMATIC NET PC Software V13 (All versions), SIMATIC NET PC Software V14 (All versions < V14 SP1 Update 14), SIMATIC NET PC Software V15 (All versions), SIMATIC RF188C (All versions < V1.1.0), SIMATIC RF600R family (All versions < V3.2.1), SIMATIC S7-1500 CPU family (incl. related ET200 CPUs and SIPLUS variants) (All versions >= V2.5 < V2.6.1), SIMATIC S7-1500 Software Controller (All versions between V2.5 (including) and V2.7 (excluding)), SIMATIC WinCC OA (All versions < V3.15 P018), SIMATIC WinCC Runtime Advanced (All versions < V15.1 Upd 4), SINEC NMS (All versions < V1.0 SP1), SINEMA Server (All versions < V14 SP2), SINUMERIK OPC UA Server (All versions < V2.1), TeleControl Server Basic (All versions < V3.1.1). Specially crafted network packets sent to affected devices on port 4840/tcp could allow an unauthenticated remote attacker to cause a denial of service condition of the OPC communication or crash the device. The security vulnerability could be exploited by an attacker with network access to the affected systems. Successful exploitation requires no system privileges and no user interaction. An attacker could use the vulnerability to compromise availability of the OPC communication.

The bug was discovered 04/09/2019. The weakness was presented 04/17/2019. This vulnerability is known as CVE-2019-6575 since 01/22/2019. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Neither technical details nor an exploit are publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 8 days. During that time the estimated underground price was around $5k-$25k.

Proper firewalling of tcp/4840 is able to address this issue.

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Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.7

VulDB Base Score: 5.3
VulDB Temp Score: 5.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

ADP CISA Base Score: 7.5
ADP CISA Vector: 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

NVD Base Score: 🔍

Exploitinginfo

Class: Uncaught exception
CWE: CWE-248
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Firewall
Status: 🔍

0-Day Time: 🔍

Firewalling: 🔍

Timelineinfo

01/22/2019 🔍
04/09/2019 +77 days 🔍
04/17/2019 +8 days 🔍
04/17/2019 +0 days 🔍
06/03/2026 +2604 days 🔍

Sourcesinfo

Vendor: siemens.com

Advisory: ssa-307392
Status: Not defined

CVE: CVE-2019-6575 (🔍)
GCVE (CVE): GCVE-0-2019-6575
GCVE (VulDB): GCVE-100-133453

Entryinfo

Created: 04/17/2019 22:44
Updated: 06/03/2026 19:36
Changes: 04/17/2019 22:44 (56), 05/30/2020 09:49 (1), 08/29/2023 15:00 (5), 06/03/2026 19:36 (28)
Complete: 🔍
Cache ID: 216::103

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