Description
A memory exhaustion vulnerability exists in ZIP archive processing. Orthanc automatically extracts ZIP archives uploaded to certain endpoints and trusts metadata fields describing the uncompressed size of archived files. An attacker can craft a small ZIP archive containing a forged size value, causing the server to allocate extremely large buffers during extraction.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Orthanc | DICOM Server | ≤ 1.12.10 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | orthanc | 1.12.10+dfsg-4 | — |
| Debian 13 | orthanc | No fix yet | — |
| Debian 12 | orthanc | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | orthanc | No fix yet | — |
| Ubuntu 26.04 LTS | orthanc | No fix yet | — |
| Ubuntu 25.10 | orthanc | No fix yet | — |
| Ubuntu 24.04 LTS | orthanc | No fix yet | — |
| Ubuntu 22.04 LTS | orthanc | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 20.04 LTS | orthanc | No fix yet | — |
| Ubuntu 18.04 LTS | orthanc | No fix yet | — |
| Ubuntu 16.04 LTS | orthanc | No fix yet | — |