Siemens SIMATIC S7-410 Service Port 102 Crafted Packet input validation

CVSS Meta Temp Score
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CTI Interest Score
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7.4$0-$5k0.00

Summaryinfo

A vulnerability described as critical has been identified in Siemens SIMATIC S7-400, SIMATIC S7-400 PN-DP V7, SIMATIC S7-400H, SIMATIC S7-400H V6 and SIMATIC S7-410. This vulnerability affects unknown code of the component Service Port 102. The manipulation as part of Crafted Packet results in input validation. This vulnerability is cataloged as CVE-2018-16556. The attack may be launched remotely. There is no exploit available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability classified as critical has been found in Siemens SIMATIC S7-400, SIMATIC S7-400 PN-DP V7, SIMATIC S7-400H, SIMATIC S7-400H V6 and SIMATIC S7-410 (SCADA Software). Affected is an unknown code block of the component Service Port 102. The manipulation as part of a Crafted Packet leads to a input validation vulnerability. CWE is classifying the issue as CWE-20. The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly. This is going to have an impact on availability. CVE summarizes:

A vulnerability has been identified in SIMATIC S7-400 (incl. F) V6 and below (All versions), SIMATIC S7-400 PN/DP V7 (incl. F) (All versions), SIMATIC S7-400H V4.5 and below (All versions), SIMATIC S7-400H V6 (All versions), SIMATIC S7-410 (All versions < V8.2.1). Specially crafted packets sent to port 102/tcp via Ethernet interface, via PROFIBUS, or via Multi Point Interfaces (MPI) could cause the affected devices to go into defect mode. Manual reboot is required to resume normal operation. Successful exploitation requires an attacker to be able to send specially crafted packets to port 102/tcp via Ethernet interface, via PROFIBUS or Multi Point Interfaces (MPI). No user interaction and no user privileges are required to exploit the security vulnerability. The vulnerability could allow causing a Denial-of-Service condition of the core functionality of the CPU, compromising the availability of the system. At the time of advisory publication no public exploitation of this security vulnerability was known.

The bug was discovered 11/13/2018. The weakness was shared 12/13/2018 (Website). The advisory is shared for download at cert-portal.siemens.com. This vulnerability is traded as CVE-2018-16556 since 09/06/2018. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. There are neither technical details nor an exploit publicly available.

The vulnerability was handled as a non-public zero-day exploit for at least 30 days. During that time the estimated underground price was around $5k-$25k.

Upgrading eliminates this vulnerability.It is possible to mitigate the weakness by firewalling tcp/102. The best possible mitigation is suggested to be upgrading to the latest version.

The entry VDB-127945 is related to this item. VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.5
VulDB Meta Temp Score: 7.4

VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 7.5
CNA Vector (Siemens AG): 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Input validation
CWE: CWE-20
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: Upgrade
Status: 🔍

0-Day Time: 🔍

Firewalling: 🔍

Timelineinfo

09/06/2018 🔍
11/13/2018 +68 days 🔍
12/13/2018 +30 days 🔍
12/13/2018 +0 days 🔍
12/14/2018 +1 days 🔍
06/19/2023 +1648 days 🔍

Sourcesinfo

Vendor: siemens.com

Advisory: ssa-113131
Status: Not defined

CVE: CVE-2018-16556 (🔍)
GCVE (CVE): GCVE-0-2018-16556
GCVE (VulDB): GCVE-100-127944
See also: 🔍

Entryinfo

Created: 12/14/2018 07:45
Updated: 06/19/2023 07:22
Changes: 12/14/2018 07:45 (61), 04/20/2020 20:06 (1), 06/19/2023 07:17 (4), 06/19/2023 07:22 (11)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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