CVE-2024-53863
Synapse can be forced to thumbnail unexpected file formats, invoking external, potentially untrustworthy decoders
Severidad por fuente
La etiqueta propia de Trivy es CRITICAL. Crítica según NVD. Más baja según GHSA (alta), Ubuntu (media).
Descripción
Synapse is an open-source Matrix homeserver. In Synapse versions before 1.120.1, enabling the dynamic_thumbnails option or processing a specially crafted request could trigger the decoding and thumbnail generation of uncommon image formats, potentially invoking external tools like Ghostscript for processing. This significantly expands the attack surface in a historically vulnerable area, presenting a risk that far outweighs the benefit, particularly since these formats are rarely used on the open web or within the Matrix ecosystem. Synapse 1.120.1 addresses the issue by restricting thumbnail generation to images in the following widely used formats: PNG, JPEG, GIF, and WebP. This vulnerability is fixed in 1.120.1.
Paquetes afectados y versiones corregidas
| Fuente | Paquete | Corregido en |
|---|---|---|
| alpine 3.20 | synapse | 1.120.1 |
| alpine 3.21 | synapse | 1.120.2-r0 |
| alpine 3.22 | synapse | 1.120.2-r0 |
| alpine 3.23 | synapse | 1.120.2-r0 |
| alpine 3.24 | synapse | 1.120.2-r0 |
| alpine edge | synapse | 1.120.2-r0 |
| pip::GitHub Security Advisory pip | matrix-synapse | 1.120.1 |
| rapidfort debian 12 | matrix-synapse | 0:1.121.0-1 |
| rapidfort debian 13 | matrix-synapse | 0:1.121.0-1 |
| rapidfort ubuntu 20.04 | matrix-synapse | sin corrección indicada |
| rapidfort ubuntu 22.04 | matrix-synapse | sin corrección indicada |
| rapidfort ubuntu 24.04 | matrix-synapse | sin corrección indicada |
Mostrar las 13 entradas de 13 fuentes
| Fuente | Paquete | Corregido en |
|---|---|---|
| alpine 3.20 | synapse | 1.120.1 |
| alpine 3.21 | synapse | 1.120.2-r0 |
| alpine 3.22 | synapse | 1.120.2-r0 |
| alpine 3.23 | synapse | 1.120.2-r0 |
| alpine 3.24 | synapse | 1.120.2-r0 |
| alpine edge | synapse | 1.120.2-r0 |
| pip::GitHub Security Advisory pip | matrix-synapse | 1.120.1 |
| rapidfort debian 12 | matrix-synapse | 0:1.121.0-1 |
| rapidfort debian 13 | matrix-synapse | 0:1.121.0-1 |
| rapidfort ubuntu 20.04 | matrix-synapse | sin corrección indicada |
| rapidfort ubuntu 22.04 | matrix-synapse | sin corrección indicada |
| rapidfort ubuntu 24.04 | matrix-synapse | sin corrección indicada |
| ubuntu 22.04 | matrix-synapse | sin corrección indicada |
Referencias
- https://github.com/element-hq/synapse
- https://github.com/element-hq/synapse/commit/b64a4e5fbbbf119b6c65aedf0d999b4237d55503
- https://github.com/element-hq/synapse/security/advisories/GHSA-vp6v-whfm-rv3g
- https://nvd.nist.gov/vuln/detail/CVE-2024-53863
- https://ubuntu.com/security/notices/USN-7444-1
- https://www.cve.org/CVERecord?id=CVE-2024-53863