Siemens SIMATIC ET/SIMATIC S7-1500/SIMATIC S7-1500 Network Stack Crafted Packet resource consumption

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.3$0-$5k0.00

Summaryinfo

A vulnerability classified as problematic was found in Siemens SIMATIC ET, SIMATIC S7-1500 and SIMATIC S7-1500. The affected element is an unknown function of the component Network Stack. Executing a manipulation as part of Crafted Packet can lead to resource consumption. This vulnerability is registered as CVE-2018-13805. It is possible to launch the attack remotely. No exploit is available. The application of restrictive firewalling is recommended.

Detailsinfo

A vulnerability has been found in Siemens SIMATIC ET, SIMATIC S7-1500 and SIMATIC S7-1500 (SCADA Software) (version unknown) and classified as problematic. This vulnerability affects an unknown function of the component Network Stack. The manipulation as part of a Crafted Packet leads to a resource consumption vulnerability. The CWE definition for the vulnerability is CWE-400. The product does not properly control the allocation and maintenance of a limited resource, thereby enabling an actor to influence the amount of resources consumed, eventually leading to the exhaustion of available resources. As an impact it is known to affect availability. CVE summarizes:

A vulnerability has been identified in SIMATIC ET 200SP Open Controller (All versions >= V2.0), SIMATIC S7-1500 Software Controller (All versions >= V2.0 and < V2.5), SIMATIC S7-1500 incl. F (All versions >= V2.0 and < V2.5). An attacker can cause a denial-of-service condition on the network stack by sending a large number of specially crafted packets to the PLC. The PLC will lose its ability to communicate over the network. This vulnerability could be exploited by an attacker with network access to the affected systems. Successful exploitation requires no privileges and no user interaction. An attacker could use this vulnerability to compromise availability of the network connectivity.

The bug was discovered 10/09/2018. The weakness was published 10/10/2018 (Website). The advisory is available at cert-portal.siemens.com. This vulnerability was named CVE-2018-13805 since 07/10/2018. The exploitation appears to be easy. The attack can be initiated remotely. No form of authentication is required for a successful exploitation. The technical details are unknown and an exploit is not available. This vulnerability is assigned to T1499 by the MITRE ATT&CK project.

The vulnerability was handled as a non-public zero-day exploit for at least 1 days. During that time the estimated underground price was around $5k-$25k.

Proper firewalling of is able to address this issue.

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Productinfo

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Vendor

Name

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.3

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

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

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

NVD Base Score: 🔍

Exploitinginfo

Class: Resource consumption
CWE: CWE-400 / CWE-404
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: 🔍

Timelineinfo

07/10/2018 🔍
10/09/2018 +91 days 🔍
10/10/2018 +0 days 🔍
10/10/2018 +0 days 🔍
10/11/2018 +1 days 🔍
05/25/2023 +1687 days 🔍

Sourcesinfo

Vendor: siemens.com

Advisory: ssa-347726
Status: Not defined
Confirmation: 🔍

CVE: CVE-2018-13805 (🔍)
GCVE (CVE): GCVE-0-2018-13805
GCVE (VulDB): GCVE-100-125230

Entryinfo

Created: 10/11/2018 11:42
Updated: 05/25/2023 08:38
Changes: 10/11/2018 11:42 (58), 04/01/2020 17:04 (2), 05/25/2023 08:38 (4)
Complete: 🔍
Cache ID: 216::103

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