SB2024120478 - Fedora 41 update for matrix-synapse
Published: December 4, 2024
Breakdown by Severity
- Low
- Medium
- High
- Critical
Description
This security bulletin contains information about 4 vulnerabilities.
1) Allocation of Resources Without Limits or Throttling (CVE-ID: CVE-2024-52805)
CWE-ID: CWE-770 - Allocation of Resources Without Limits or Throttling
CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to allocation of resources without limits or throttling in multipart/form-data request handling when processing unsupported multipart/form-data requests. A remote attacker can send a specially crafted request to cause a denial of service.
Only certain configurations are vulnerable, and memory consumption may transiently increase beyond expected levels while the request is being processed.
2) Input validation error (CVE-ID: CVE-2024-52815)
CWE-ID: CWE-20 - Improper input validation
CVSSv4: 8.7 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to improper input validation in invite validation over federation when processing invites received over federation. A remote attacker can send a specially crafted invite to cause a denial of service.
The issue can disrupt the invited user's /sync functionality.
3) Interpretation Conflict (CVE-ID: CVE-2024-53863)
CWE-ID: CWE-436 - Interpretation Conflict
CVSSv4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N]
The vulnerability allows a remote attacker to invoke potentially untrustworthy decoders.
The vulnerability exists due to improper restriction of processed file formats in thumbnail generation when processing a specially crafted request. A remote attacker can send a specially crafted request to invoke potentially untrustworthy decoders.
Instances with the dynamic_thumbnails option enabled are affected.
4) Exposure of Sensitive System Information to an Unauthorized Control Sphere (CVE-ID: CVE-2024-53867)
CWE-ID: CWE-497 - Exposure of Sensitive System Information to an Unauthorized Control Sphere
CVSSv4: 5.3 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
The vulnerability allows a remote user to disclose sensitive information.
The vulnerability exists due to exposure of sensitive information in the Sliding Sync feature when handling synchronization requests for users no longer in a room. A remote user can request synchronization data to disclose sensitive information.
Only partial room state changes are exposed; non-state events such as messages are not affected.
Remediation
Install update from vendor's website.