Siemens SIMATIC prior 3.3.4 Ethernet Frame resource consumption
CVSS Meta Temp Score | Current Exploit Price (≈) | CTI Interest Score |
---|---|---|
7.3 | $0-$5k | 0.00 |
A vulnerability was found in Siemens SIMATIC (SCADA Software). It has been rated as critical. Affected by this issue is some unknown processing of the component Ethernet Frame Handler. The manipulation with an unknown input leads to a resource consumption vulnerability. Using CWE to declare the problem leads to 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. Impacted is availability. CVE summarizes:
A vulnerability has been identified in SIMATIC MV540 H (All versions < V3.3.4), SIMATIC MV540 S (All versions < V3.3.4), SIMATIC MV550 H (All versions < V3.3.4), SIMATIC MV550 S (All versions < V3.3.4), SIMATIC MV560 U (All versions < V3.3.4), SIMATIC MV560 X (All versions < V3.3.4). Affected devices cannot properly process specially crafted Ethernet frames sent to the devices. This could allow an unauthenticated remote attacker to cause a denial of service condition. The affected devices must be restarted manually.
The weakness was published 07/11/2023 as ssa-561322. The advisory is shared for download at cert-portal.siemens.com. This vulnerability is handled as CVE-2023-35921 since 06/20/2023. There are neither technical details nor an exploit publicly available. The MITRE ATT&CK project declares the attack technique as T1499.
Upgrading to version 3.3.4 eliminates this vulnerability.
Product
Type
Vendor
Name
Version
- 1.0
- 1.0.2.2
- 01.00.01.00
- 1.1.2
- 1.1.7
- 1.4.1
- 1.5 SP3 Update 2
- 1.5.18
- 1.6
- 1.8.3
- 2.0
- 2.0.28
- 2.1
- 2.2
- 2.3
- 2.4
- 2.5
- 2.5.1
- 2.7
- 2.10.2
- 2.12
- 3.0
- 3.0.1.1
- 3.0.2
- 3.0.44
- 3.2.12
- 3.3
License
CPE 2.3
CPE 2.2
CVSSv4
VulDB CVSS-B Score: 🔍VulDB CVSS-BT Score: 🔍
VulDB Vector: 🔍
VulDB Reliability: 🔍
CVSSv3
VulDB Meta Base Score: 7.5VulDB Meta Temp Score: 7.3
VulDB Base Score: 7.5
VulDB Temp Score: 7.2
VulDB Vector: 🔍
VulDB Reliability: 🔍
CNA Base Score: 7.5
CNA Vector (Siemens AG): 🔍
CVSSv2
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Vector | Complexity | Authentication | Confidentiality | Integrity | Availability |
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍
Exploiting
Class: Resource consumptionCWE: CWE-400 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍
Local: No
Remote: Yes
Availability: 🔍
Status: Not defined
EPSS Score: 🔍
EPSS Percentile: 🔍
Price Prediction: 🔍
Current Price Estimation: 🔍
0-Day | unlock | unlock | unlock | unlock |
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Today | unlock | unlock | unlock | unlock |
Threat Intelligence
Interest: 🔍Active Actors: 🔍
Active APT Groups: 🔍
Countermeasures
Recommended: UpgradeStatus: 🔍
0-Day Time: 🔍
Upgrade: SIMATIC 3.3.4
Timeline
06/20/2023 🔍07/11/2023 🔍
07/11/2023 🔍
07/11/2023 🔍
Sources
Vendor: siemens.comAdvisory: ssa-561322
Status: Confirmed
CVE: CVE-2023-35921 (🔍)
Entry
Created: 07/11/2023 02:53 PMChanges: 07/11/2023 02:53 PM (51)
Complete: 🔍
Cache ID: 18:5BB:40
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