Description

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.

INFO

Published Date :

2024-12-03T16:48:29.722Z

Last Modified :

2024-12-03T19:08:30.218Z

Source :

GitHub_M
AFFECTED PRODUCTS

The following products are affected by CVE-2024-53863 vulnerability.

Vendors Products
Element-hq
  • Synapse
Matrix
  • Synapse
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2024-53863.

URL Resource
https://github.com/element-hq/synapse/security/advisories/GHSA-vp6v-whfm-rv3g cve-icon cve-icon
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CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
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Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact