VDB-153108 · CVE-2019-19301 · ssa-102233

Siemens SCALANCE X-200 VxWorks-based Profinet TCP Stack Packet resource consumption

CVSS Meta Temp Score CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.	Current Exploit Price (≈) Our analysts are monitoring exploit markets and are in contact with vulnerability brokers. The range indicates the observed or calculated exploit price to be seen on exploit markets. A good indicator to understand the monetary effort required for and the popularity of an attack.	CTI Interest Score Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
6.8	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Siemens SCALANCE X-200, SCALANCE X-200IRT, SCALANCE X-300, SCALANCE X-443-1, SIMATIC CP 443-1 Advanced, SIMATIC RF180C and SIMATIC RF182C and classified as problematic. Affected is an unknown function of the component VxWorks-based Profinet TCP Stack. The manipulation as part of Packet results in resource consumption. This vulnerability was named CVE-2019-19301. The attack may be performed from remote. There is no available exploit.

Detailsinfo

A vulnerability classified as problematic has been found in Siemens SCALANCE X-200, SCALANCE X-200IRT, SCALANCE X-300, SCALANCE X-443-1, SIMATIC CP 443-1 Advanced, SIMATIC RF180C and SIMATIC RF182C (SCADA Software). Affected is an unknown code of the component VxWorks-based Profinet TCP Stack. The manipulation as part of a Packet leads to a resource consumption vulnerability. CWE is classifying the issue as 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. This is going to have an impact on availability. CVE summarizes:

A vulnerability has been identified in SCALANCE X-200 switch family (incl. SIPLUS NET variants) (All versions), SCALANCE X-200IRT switch family (incl. SIPLUS NET variants) (All versions), SCALANCE X-300 switch family (incl. X408 and SIPLUS NET variants) (All versions), SIMATIC CP 443-1 (incl. SIPLUS NET variants) (All versions), SIMATIC CP 443-1 Advanced (incl. SIPLUS NET variants) (All versions), SIMATIC RF180C (All versions), SIMATIC RF182C (All versions). The VxWorks-based Profinet TCP Stack can be forced to make very expensive calls for every incoming packet which can lead to a denial of service.

The weakness was presented 04/14/2020. This vulnerability is traded as CVE-2019-19301 since 11/26/2019. 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 current price for an exploit might be approx. USD $0-$5k (estimation calculated on 04/15/2020). The MITRE ATT&CK project declares the attack technique as T1499.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

Once again VulDB remains the best source for vulnerability data.

Productinfo

Type

SCADA Software

Vendor

Siemens

Name

License

commercial

Website

Vendor: https://www.siemens.com/

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

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

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

NVD Base Score: 7.5
NVD Vector: 🔍

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

CVSSv2info

AV	AC	Au	C	I	A
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳
💳	💳	💳	💳	💳	💳

Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock
Unlock	Unlock	Unlock	Unlock	Unlock	Unlock

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: 🔍

0-Day	Unlock	Unlock	Unlock	Unlock
Today	Unlock	Unlock	Unlock	Unlock

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

11/26/2019 🔍
04/14/2020 +140 days 🔍
04/15/2020 +1 days 🔍
05/18/2024 +1494 days 🔍

Sourcesinfo

Vendor: siemens.com

Advisory: ssa-102233
Status: Not defined

CVE: CVE-2019-19301 (🔍)
GCVE (CVE): GCVE-0-2019-19301
GCVE (VulDB): GCVE-100-153108

Entryinfo

Created: 04/15/2020 07:56
Updated: 05/18/2024 19:33
Changes: 04/15/2020 07:56 (35), 04/15/2020 08:01 (18), 05/18/2024 19:25 (18), 05/18/2024 19:33 (12)
Complete: 🔍
Cache ID: 216::103