VDB-276941 · CVE-2023-28827 · ssa-423808

Siemens SIMATIC CP 1242-7 V2 null pointer dereference

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.
5.8	$0-$5k	0.00

Summaryinfo

A vulnerability was found in Siemens SIMATIC CP 1242-7 V2, SIMATIC CP 1243-1, SIMATIC CP 1243-1 DNP3, SIMATIC CP 1243-1 IEC, SIMATIC CP 1243-7 LTE, SIMATIC CP 1243-8 IRC, SIMATIC HMI Comfort Panels, SIMATIC IPC DiagBase, SIMATIC IPC DiagMonitor, SIMATIC WinCC Runtime Advanced, SIPLUS TIM 1531 IRC and TIM 1531 IRC. It has been rated as problematic. Impacted is an unknown function. The manipulation leads to null pointer dereference. This vulnerability is documented as CVE-2023-28827. The attack can be initiated remotely. There is not any exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability, which was classified as problematic, has been found in Siemens SIMATIC CP 1242-7 V2, SIMATIC CP 1243-1, SIMATIC CP 1243-1 DNP3, SIMATIC CP 1243-1 IEC, SIMATIC CP 1243-7 LTE, SIMATIC CP 1243-8 IRC, SIMATIC HMI Comfort Panels, SIMATIC IPC DiagBase, SIMATIC IPC DiagMonitor, SIMATIC WinCC Runtime Advanced, SIPLUS TIM 1531 IRC and TIM 1531 IRC. This issue affects an unknown function. The manipulation with an unknown input leads to a null pointer dereference vulnerability. Using CWE to declare the problem leads to CWE-476. A NULL pointer dereference occurs when the application dereferences a pointer that it expects to be valid, but is NULL, typically causing a crash or exit. Impacted is availability. The summary by CVE is:

A vulnerability has been identified in SIMATIC CP 1242-7 V2 (incl. SIPLUS variants) (All versions < V3.5.20), SIMATIC CP 1243-1 (incl. SIPLUS variants) (All versions < V3.5.20), SIMATIC CP 1243-1 DNP3 (incl. SIPLUS variants) (All versions < V3.5.20), SIMATIC CP 1243-1 IEC (incl. SIPLUS variants) (All versions < V3.5.20), SIMATIC CP 1243-7 LTE (All versions < V3.5.20), SIMATIC CP 1243-8 IRC (6GK7243-8RX30-0XE0) (All versions < V3.5.20), SIMATIC HMI Comfort Panels (incl. SIPLUS variants) (All versions), SIMATIC IPC DiagBase (All versions), SIMATIC IPC DiagMonitor (All versions), SIMATIC WinCC Runtime Advanced (All versions), SIPLUS TIM 1531 IRC (6AG1543-1MX00-7XE0) (All versions < V2.4.8), TIM 1531 IRC (6GK7543-1MX00-0XE0) (All versions < V2.4.8). The web server of the affected devices do not properly handle certain requests, causing a timeout in the watchdog, which could lead to the clean up of pointers. This could allow a remote attacker to cause a denial of service condition in the system.

The advisory is shared at cert-portal.siemens.com. The identification of this vulnerability is CVE-2023-28827 since 03/24/2023. The exploitation is known to be difficult. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Neither technical details nor an exploit are publicly available.

Upgrading eliminates this vulnerability.

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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: 🔍

CNA CVSS-B Score: 🔍
CNA CVSS-BT Score: 🔍
CNA Vector: 🔍

CVSSv3info

VulDB Meta Base Score: 5.9
VulDB Meta Temp Score: 5.8

VulDB Base Score: 5.9
VulDB Temp Score: 5.7
VulDB Vector: 🔍
VulDB Reliability: 🔍

CNA Base Score: 5.9
CNA Vector (siemens): 🔍

CVSSv2info

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Vector	Complexity	Authentication	Confidentiality	Integrity	Availability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Null pointer dereference
CWE: CWE-476 / 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: Upgrade
Status: 🔍

0-Day Time: 🔍

Timelineinfo

03/24/2023 🔍
09/10/2024 +535 days 🔍
09/10/2024 +0 days 🔍
09/11/2024 +1 days 🔍

Sourcesinfo

Vendor: siemens.com

Advisory: ssa-423808
Status: Confirmed

CVE: CVE-2023-28827 (🔍)
GCVE (CVE): GCVE-0-2023-28827
GCVE (VulDB): GCVE-100-276941

Entryinfo

Created: 09/10/2024 13:52
Updated: 09/11/2024 10:21
Changes: 09/10/2024 13:52 (75), 09/11/2024 10:21 (1)
Complete: 🔍
Cache ID: 216::103