Full Report
Siemens Xpedition Layout Browser consists of a stack overflow vulnerability that could be triggered when the application reads a malicious file in PCB format. If a user is tricked to open a malicious file with the affected product, this could lead the application to crash or potentially lead to arbitrary code execution. Siemens has released an update for Xpedition Layout Browser and recommends to update to the latest version.
Analysis Summary
# Vulnerability: Stack Overflow in Siemens Xpedition Layout Browser via Malicious PCB File
## CVE Details
- CVE ID: CVE-2023-30900
- CVSS Score: 7.8 (High)
- CWE: CWE-121: Stack-based Buffer Overflow
## Affected Systems
- Products: Siemens Xpedition Layout Browser
- Versions: All versions prior to VX.2.14
- Configurations: Triggered when the application reads a malicious file in PCB format.
## Vulnerability Description
The vulnerability resides in the function responsible for parsing PCB files within Siemens Xpedition Layout Browser. It is identified as a stack-based buffer overflow (CWE-121). An attacker can leverage this flaw by providing a specially crafted, malicious PCB file. If a user opens this file with the affected application, it can lead to application instability (crash) or potentially allow the attacker to execute arbitrary code in the context of the current process.
## Exploitation
- Status: PoC available (Implied by high scoring metrics *E:P* - Exploit code Maturity: Proof of existence)
- Complexity: Low (Based on CVSS vector AC:L/PR:N/UI:R - Low Attack Complexity, No Privilege Required, Requires User Interaction)
- Attack Vector: Local (CVSS vector AV:L)
## Impact
The high CVSS base score suggests significant impact across all categories:
- Confidentiality: High
- Integrity: High
- Availability: High
## Remediation
### Patches
- Update Xpedition Layout Browser to version **VX.2.14 or later**.
### Workarounds
- Do not open untrusted PCB files in Xpedition Layout Browser.
- Apply general security recommendations, including protecting network access to devices with appropriate mechanisms and configuring the environment according to Siemens' operational guidelines for Industrial Security.
## Detection
- **Indicators of Compromise (IoC):** Application crashes or unexpectedly terminated processes when opening specific PCB design files. Instances of arbitrary code execution originating from the Xpedition Layout Browser process.
- **Detection Methods and Tools:** Standard endpoint detection and response (EDR) tools may detect abnormal code execution originating from known vulnerable application processes or unusual file handling during PCB file parsing.
## References
- Vendor Advisory: SSA-829656
- Siemens Fix Information: hxxps://eda.sw.siemens.com/en-US/pcb/xpedition-enterprise/release-highlights-2-14/
- General Siemens Security Portal: hxxps://www.siemens.com/cert/advisories