Orthanc DICOM Server
Memory Exhaustion via Unbounded Content-Length
The HTTP request handler trusts the Content-Length header and allocates memory for the full declared body size without enforcing an upper limit.
This advisory contains limited information during coordinated disclosure. Please check back later for full details.
Description
An authenticated attacker can supply an extremely large Content-Length value (up to approximately 4 GB) to trigger excessive memory allocation and cause denial of service.
Impact
- Denial of service.
Mitigation
Update Orthanc to version 1.12.11 or later.
References
How We Can Help
Who We Are
The security researchers behind this advisory.
Dr. rer. nat. Simon Weber
Senior Pentester & MedSec Researcher
I evaluate your SaMD with the same industry-defining security insight I contributed to the BAK MV for the revision of the B3S standard.
- PhD on Hospital Cybersecurity
- Critical vulnerabilities found in hospital systems
- Alumni of THB MedSec Research Group
- gematik Security Hero
Dipl.-Inf. Volker Schönefeld
Senior Application Security Expert
As a former CTO and developer turned pentester, I work alongside your team to uncover vulnerabilities and find solutions that fit your architecture.
- 20+ years as CTO, 50M+ app downloads
- Architected and secured large-scale IoT fleets
- Certified Web Exploitation Specialist
- gematik Security Hero
Looking for a Penetration Test?
Machine Spirits specializes in security assessments for medical devices and healthcare IT. From MDR penetration testing to C5 cloud compliance, we help MedTech companies meet regulatory requirements.