Siemens EN100 Ethernet module DNP3 IP prior 4.40 HTTP Packet /txtrace memory corruption

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.
5.1	$0-$5k	0.00

Summaryinfo

A vulnerability identified as critical has been detected in Siemens EN100 Ethernet module DNP3 IP, EN100 Ethernet module IEC 104, EN100 Ethernet module IEC 61850, EN100 Ethernet module Modbus TCP and EN100 Ethernet module PROFINET IO. The affected element is an unknown function of the file /txtrace of the component HTTP Packet Handler. Performing a manipulation results in memory corruption. This vulnerability was named CVE-2022-30938. The attack may be initiated remotely. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, was found in Siemens EN100 Ethernet module DNP3 IP, EN100 Ethernet module IEC 104, EN100 Ethernet module IEC 61850, EN100 Ethernet module Modbus TCP and EN100 Ethernet module PROFINET IO. This affects some unknown functionality of the file /txtrace of the component HTTP Packet Handler. The manipulation with an unknown input leads to a memory corruption vulnerability. CWE is classifying the issue as CWE-119. The product performs operations on a memory buffer, but it can read from or write to a memory location that is outside of the intended boundary of the buffer. This is going to have an impact on availability. The summary by CVE is:

A vulnerability has been identified in EN100 Ethernet module DNP3 IP variant (All versions), EN100 Ethernet module IEC 104 variant (All versions), EN100 Ethernet module IEC 61850 variant (All versions < V4.40), EN100 Ethernet module Modbus TCP variant (All versions), EN100 Ethernet module PROFINET IO variant (All versions). Affected applications contains a memory corruption vulnerability while parsing specially crafted HTTP packets to /txtrace endpoint manupulating a specific argument. This could allow an attacker to crash the affected application leading to a denial of service condition

The weakness was presented 07/12/2022 as ssa-865333. It is possible to read the advisory at cert-portal.siemens.com. This vulnerability is uniquely identified as CVE-2022-30938 since 05/16/2022. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 07/12/2022).

Upgrading to version 4.40 eliminates this vulnerability.

Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

• Siemens

Name

• EN100 Ethernet module DNP3 IP
• EN100 Ethernet module IEC 104
• EN100 Ethernet module IEC 61850
• EN100 Ethernet module Modbus TCP
• EN100 Ethernet module PROFINET IO

License

• commercial

Website

• Vendor: https://www.siemens.com/

CPE 2.3info

• 🔍
• 🔍
• 🔍

CPE 2.2info

• 🔍
• 🔍
• 🔍

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 5.3
VulDB Meta Temp Score: 5.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔍
VulDB Reliability: 🔍

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: 🔍

Exploitinginfo

Class: Memory corruption
CWE: CWE-119
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: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: EN100 Ethernet module DNP3 IP/EN100 Ethernet module IEC 104/EN100 Ethernet module IEC 61850/EN100 Ethernet module Modbus TCP/EN100 Ethernet module PROFINET IO 4.40

Timelineinfo

05/16/2022 🔍
07/12/2022 +57 days 🔍
07/12/2022 +0 days 🔍
07/12/2022 +0 days 🔍

Sourcesinfo

Vendor: siemens.com

Advisory: ssa-865333
Status: Confirmed

CVE: CVE-2022-30938 (🔍)
GCVE (CVE): GCVE-0-2022-30938
GCVE (VulDB): GCVE-100-203583

Entryinfo

Created: 07/12/2022 15:57
Changes: 07/12/2022 15:57 (41)
Complete: 🔍
Cache ID: 216::103

Be aware that VulDB is the high quality source for vulnerability data.

Discussion

Want to know what is going to be exploited?

We predict KEV entries!