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Vulnerability Details :

CVE-2024-37303

Summary
Assigner-GitHub_M
Assigner Org ID-a0819718-46f1-4df5-94e2-005712e83aaa
Published At-03 Dec, 2024 | 17:06
Updated At-03 Dec, 2024 | 18:51
Rejected At-
Credits

Synapse unauthenticated writes to the media repository allow planting of problematic content

Synapse is an open-source Matrix homeserver. Synapse before version 1.106 allows, by design, unauthenticated remote participants to trigger a download and caching of remote media from a remote homeserver to the local media repository. Such content then also becomes available for download from the local homeserver in an unauthenticated way. The implication is that unauthenticated remote adversaries can use this functionality to plant problematic content into the media repository. Synapse 1.106 introduces a partial mitigation in the form of new endpoints which require authentication for media downloads. The unauthenticated endpoints will be frozen in a future release, closing the attack vector.

Vendors
-
Not available
Products
-
Metrics (CVSS)
VersionBase scoreBase severityVector
Weaknesses
Attack Patterns
Solution/Workaround
References
HyperlinkResource Type
EPSS History
Score
Latest Score
-
N/A
No data available for selected date range
Percentile
Latest Percentile
-
N/A
No data available for selected date range
Stakeholder-Specific Vulnerability Categorization (SSVC)
▼Common Vulnerabilities and Exposures (CVE)
cve.org
Assigner:GitHub_M
Assigner Org ID:a0819718-46f1-4df5-94e2-005712e83aaa
Published At:03 Dec, 2024 | 17:06
Updated At:03 Dec, 2024 | 18:51
Rejected At:
▼CVE Numbering Authority (CNA)
Synapse unauthenticated writes to the media repository allow planting of problematic content

Synapse is an open-source Matrix homeserver. Synapse before version 1.106 allows, by design, unauthenticated remote participants to trigger a download and caching of remote media from a remote homeserver to the local media repository. Such content then also becomes available for download from the local homeserver in an unauthenticated way. The implication is that unauthenticated remote adversaries can use this functionality to plant problematic content into the media repository. Synapse 1.106 introduces a partial mitigation in the form of new endpoints which require authentication for media downloads. The unauthenticated endpoints will be frozen in a future release, closing the attack vector.

Affected Products
Vendor
element-hq
Product
synapse
Versions
Affected
  • < 1.106
Problem Types
TypeCWE IDDescription
CWECWE-306CWE-306: Missing Authentication for Critical Function
Type: CWE
CWE ID: CWE-306
Description: CWE-306: Missing Authentication for Critical Function
Metrics
VersionBase scoreBase severityVector
3.15.3MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Version: 3.1
Base score: 5.3
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
https://github.com/element-hq/synapse/security/advisories/GHSA-gjgr-7834-rhxr
x_refsource_CONFIRM
https://github.com/matrix-org/matrix-spec-proposals/pull/3916
x_refsource_MISC
Hyperlink: https://github.com/element-hq/synapse/security/advisories/GHSA-gjgr-7834-rhxr
Resource:
x_refsource_CONFIRM
Hyperlink: https://github.com/matrix-org/matrix-spec-proposals/pull/3916
Resource:
x_refsource_MISC
▼Authorized Data Publishers (ADP)
CISA ADP Vulnrichment
Affected Products
Vendor
element-hq
Product
synapse
CPEs
  • cpe:2.3:a:element-hq:synapse:*:*:*:*:*:*:*:*
Default Status
unknown
Versions
Affected
  • From 0 before 1.106 (custom)
Metrics
VersionBase scoreBase severityVector
Metrics Other Info
Impacts
CAPEC IDDescription
Solutions
Configurations
Workarounds
Exploits
Credits
Timeline
EventDate
Replaced By
Rejected Reason
References
HyperlinkResource
Information is not available yet
▼National Vulnerability Database (NVD)
nvd.nist.gov
Source:security-advisories@github.com
Published At:03 Dec, 2024 | 17:15
Updated At:26 Aug, 2025 | 15:09

Synapse is an open-source Matrix homeserver. Synapse before version 1.106 allows, by design, unauthenticated remote participants to trigger a download and caching of remote media from a remote homeserver to the local media repository. Such content then also becomes available for download from the local homeserver in an unauthenticated way. The implication is that unauthenticated remote adversaries can use this functionality to plant problematic content into the media repository. Synapse 1.106 introduces a partial mitigation in the form of new endpoints which require authentication for media downloads. The unauthenticated endpoints will be frozen in a future release, closing the attack vector.

CISA Catalog
Date AddedDue DateVulnerability NameRequired Action
N/A
Date Added: N/A
Due Date: N/A
Vulnerability Name: N/A
Required Action: N/A
Metrics
TypeVersionBase scoreBase severityVector
Secondary3.15.3MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Type: Secondary
Version: 3.1
Base score: 5.3
Base severity: MEDIUM
Vector:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
CPE Matches
The Matrix.org Foundation
matrix
>>synapse>>Versions before 1.106.0(exclusive)
cpe:2.3:a:matrix:synapse:*:*:*:*:*:*:*:*
Weaknesses
CWE IDTypeSource
CWE-306Secondarysecurity-advisories@github.com
CWE ID: CWE-306
Type: Secondary
Source: security-advisories@github.com
Evaluator Description
Evaluator Impact

Evaluator Solution

Vendor Statements
References
HyperlinkSourceResource
https://github.com/element-hq/synapse/security/advisories/GHSA-gjgr-7834-rhxrsecurity-advisories@github.com
Vendor Advisory
https://github.com/matrix-org/matrix-spec-proposals/pull/3916security-advisories@github.com
Issue Tracking
Patch
Hyperlink: https://github.com/element-hq/synapse/security/advisories/GHSA-gjgr-7834-rhxr
Source: security-advisories@github.com
Resource:
Vendor Advisory
Hyperlink: https://github.com/matrix-org/matrix-spec-proposals/pull/3916
Source: security-advisories@github.com
Resource:
Issue Tracking
Patch

Change History

0
Information is not available yet

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