Full Report
SiPass integrated versions before V2.90.3.8 contain a stack overflow vulnerability that could allow an unauthenticated remote attacker to crash the server application, creating a denial of service condition. Siemens has released an update for SiPass integrated and recommends to update to the latest version.
Analysis Summary
# Vulnerability: Stack Overflow in Siemens SiPass Integrated Leading to Denial of Service
## CVE Details
- CVE ID: CVE-2022-31810
- CVSS Score: 7.5 (High)
- CWE: CWE-20: Improper Input Validation
## Affected Systems
- Products: SiPass integrated
- Versions: All versions before V2.90.3.8
- Configurations: Relevant to the server application component interacting with the configuration client login data.
## Vulnerability Description
The affected server applications in SiPass integrated versions prior to V2.90.3.8 improperly check the size of data packets received for the configuration client login. This failure in input validation leads to a stack-based buffer overflow. Successful exploitation allows an unauthenticated remote attacker to crash the server application.
## Exploitation
- Status: PoC available (Implied by the vector indicating vulnerability exists and is exploitable, though explicit PoC status in the advisory is not "In the wild"). Vendor advisory implies exploitability.
- Complexity: Low (AV:N/AC:L/PR:N/UI:N)
- Attack Vector: Network
- Confidentiality: No impact (N)
- Integrity: No impact (N)
- Availability: High impact (H)
## Impact
- Confidentiality: None
- Integrity: None
- Availability: Denial of Service (DoS)
## Remediation
### Patches
- Update to SiPass integrated V2.90.3.8 or later version.
### Workarounds
- Apply general security recommendations from Siemens.
- Protect network access to affected products with appropriate mechanisms.
- Ensure devices run within a protected IT environment.
## Detection
- Indicators of compromise: Crashes or unexpected termination of the SiPass integrated server application, potentially preceded by unusual network traffic directed at the configuration client login interface.
- Detection methods and tools: Network monitoring or intrusion detection systems looking for malformed network packets targeting the Siemens SiPass integrated service endpoints.
## References
- Vendor advisories: SSA-924149
- Relevant links - defanged:
- https://support.industry.siemens.com/cs/ww/en/view/109814044/
- https://www.siemens.com/cert/advisories
- https://www.first.org/cvss/
- https://cwe.mitre.org/