GHSA-rfq8-j7rh-8hf2

Source

https://github.com/advisories/GHSA-rfq8-j7rh-8hf2

Import Source

https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2024/12/GHSA-rfq8-j7rh-8hf2/GHSA-rfq8-j7rh-8hf2.json

JSON Data

https://api.osv.dev/v1/vulns/GHSA-rfq8-j7rh-8hf2

Aliases

CVE-2024-52805

Published

2024-12-03T18:40:39Z

Modified

2024-12-03T18:57:14.874271Z

Severity

8.2 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X CVSS Calculator

Summary

Synapse allows unsupported content types to lead to memory exhaustion

Details

Impact

In Synapse before 1.120.1, multipart/form-data requests can in certain configurations transiently increase memory consumption beyond expected levels while processing the request, which can be used to amplify denial of service attacks.

Patches

Synapse 1.120.1 resolves the issue by denying requests with unsupported multipart/form-data content type.

Workarounds

Limiting request sizes or blocking the multipart/form-data content type before the requests reach Synapse, for example in a reverse proxy, alleviates the issue. Another approach that mitigates the attack is to use a low max_upload_size in Synapse.

References

https://github.com/twisted/twisted/issues/4688#issuecomment-1167705518
https://github.com/twisted/twisted/issues/4688#issuecomment-2385711609

For more information

If you have any questions or comments about this advisory, please email us at security at element.io.

Database specific

{
    "nvd_published_at": "2024-12-03T17:15:12Z",
    "severity": "HIGH",
    "github_reviewed_at": "2024-12-03T18:40:39Z",
    "github_reviewed": true,
    "cwe_ids": [
        "CWE-770"
    ]
}

References

Affected packages

PyPI / matrix-synapse

Package

Name: matrix-synapse; View open source insights on deps.dev
Purl: pkg:pypi/matrix-synapse

Affected ranges

Type: ECOSYSTEM
Events: Introduced

0Unknown introduced version / All previous versions are affected

Fixed

1.120.1

Affected versions

0.*

0.33.5

0.33.5.1

0.33.6rc1

0.33.6

0.33.7rc1

0.33.7rc2

0.33.7

0.33.8rc2

0.33.8

0.33.9

0.34.0rc1

0.34.0rc2

0.34.0

0.34.0.1

0.34.1.1

0.99.0rc1

0.99.0rc2

0.99.0rc3

0.99.0rc4

0.99.0

0.99.1rc1

0.99.1rc2

0.99.1

0.99.1.1

0.99.2rc1

0.99.2

0.99.3rc1

0.99.3

0.99.3.1

0.99.3.2

0.99.4rc1

0.99.4

0.99.5rc1

0.99.5

0.99.5.1

0.99.5.2

1.*

1.0.0rc1

1.0.0rc2

1.0.0rc3

1.0.0

1.1.0rc1

1.1.0rc2

1.1.0

1.2.0rc1

1.2.0rc2

1.2.0

1.2.1

1.3.0rc1

1.3.0

1.3.1

1.4.0rc1

1.4.0rc2

1.4.0

1.4.1rc1

1.4.1

1.5.0rc1

1.5.0rc2

1.5.0

1.5.1

1.6.0rc1

1.6.0rc2

1.6.0

1.6.1

1.7.0rc1

1.7.0rc2

1.7.0

1.7.1

1.7.2

1.7.3

1.8.0rc1

1.8.0

1.9.0.dev1

1.9.0.dev2

1.9.0rc1

1.9.0

1.9.1

1.10.0rc1

1.10.0rc2

1.10.0rc3

1.10.0rc5

1.10.0

1.10.1

1.11.0rc1

1.11.0

1.11.1

1.12.0rc1

1.12.0

1.12.1rc1

1.12.1

1.12.2

1.12.3

1.12.4rc1

1.12.4

1.13.0rc1

1.13.0rc2

1.13.0rc3

1.13.0

1.14.0rc1

1.14.0rc2

1.14.0

1.15.0rc1

1.15.0

1.15.1

1.15.2

1.16.0rc1

1.16.0rc2

1.16.0

1.16.1

1.17.0rc1

1.17.0

1.18.0rc1

1.18.0rc2

1.18.0

1.19.0rc1

1.19.0

1.19.1rc1

1.19.1

1.19.2

1.19.3

1.20.0rc1

1.20.0rc2

1.20.0rc3

1.20.0rc4

1.20.0rc5

1.20.0

1.20.1

1.21.0rc1

1.21.0rc2

1.21.0rc3

1.21.0

1.21.1

1.21.2

1.22.0rc1

1.22.0rc2

1.22.0

1.22.1

1.23.0rc1

1.23.0

1.23.1

1.24.0rc1

1.24.0rc2

1.24.0

1.25.0rc1

1.25.0

1.26.0rc1

1.26.0rc2

1.26.0

1.27.0rc1

1.27.0rc2

1.27.0

1.28.0rc1

1.28.0

1.29.0rc1

1.29.0

1.30.0rc1

1.30.0

1.30.1

1.31.0rc1

1.31.0

1.32.0rc1

1.32.0

1.32.1

1.32.2

1.33.0rc1

1.33.0rc2

1.33.0

1.33.1

1.33.2

1.34.0rc1

1.34.0

1.35.0rc1

1.35.0rc2

1.35.0rc3

1.35.0

1.35.1

1.36.0rc1

1.36.0rc2

1.36.0

1.37.0rc1

1.37.0

1.37.1rc1

1.37.1

1.38.0rc1

1.38.0rc2

1.38.0rc3

1.38.0

1.38.1

1.39.0rc1

1.39.0rc2

1.39.0rc3

1.39.0

1.40.0rc1

1.40.0rc2

1.40.0rc3

1.40.0

1.41.0rc1

1.41.0

1.41.1

1.42.0rc1

1.42.0rc2

1.42.0

1.43.0rc1

1.43.0rc2

1.43.0

1.44.0rc1

1.44.0rc2

1.44.0rc3

1.44.0

1.45.0rc1

1.45.0rc2

1.45.0

1.45.1

1.46.0rc1

1.46.0

1.47.0rc1

1.47.0rc2

1.47.0rc3

1.47.0

1.47.1

1.48.0rc1

1.48.0

1.49.0rc1

1.49.0

1.49.2

1.50.0rc1

1.50.0rc2

1.50.0

1.50.1

1.50.2

1.51.0rc1

1.51.0rc2

1.51.0

1.52.0rc1

1.52.0

1.53.0rc1

1.53.0

1.54.0rc1

1.54.0

1.55.0rc1

1.55.0

1.55.1

1.55.2

1.56.0rc1

1.56.0

1.57.0rc1

1.57.0

1.57.1

1.58.0rc2

1.58.0

1.58.1

1.59.0rc1

1.59.0rc2

1.59.0

1.59.1

1.60.0rc1

1.60.0rc2

1.60.0

1.61.0rc1

1.61.0

1.61.1

1.62.0rc1

1.62.0rc2

1.62.0rc3

1.62.0

1.63.0rc1

1.63.0

1.63.1

1.64.0rc1

1.64.0rc2

1.64.0

1.65.0rc1

1.65.0rc2

1.65.0

1.66.0rc1

1.66.0rc2

1.66.0

1.67.0rc1

1.67.0

1.68.0rc1

1.68.0rc2

1.68.0

1.69.0rc1

1.69.0rc2

1.69.0rc4

1.69.0

1.70.0rc1

1.70.0rc2

1.70.0

1.70.1

1.71.0rc1

1.71.0rc2

1.71.0

1.72.0rc1

1.72.0

1.73.0rc2

1.73.0

1.74.0rc1

1.74.0

1.75.0rc1

1.75.0rc2

1.75.0

1.76.0rc1

1.76.0rc2

1.76.0

1.77.0rc1

1.77.0rc2

1.77.0

1.78.0rc1

1.78.0

1.79.0rc1

1.79.0rc2

1.79.0

1.80.0rc1

1.80.0rc2

1.80.0

1.81.0rc1

1.81.0rc2

1.81.0

1.82.0rc1

1.82.0

1.83.0rc1

1.83.0

1.84.0rc1

1.84.0

1.84.1

1.85.0rc1

1.85.0rc2

1.85.0

1.85.1

1.85.2

1.86.0rc2

1.86.0

1.87.0rc1

1.87.0

1.88.0rc1

1.88.0

1.89.0rc1

1.89.0

1.90.0rc1

1.90.0

1.91.0rc1

1.91.0

1.91.1

1.91.2

1.92.0rc1

1.92.1

1.92.2

1.92.3

1.93.0rc1

1.93.0

1.94.0rc1

1.94.0

1.95.0rc1

1.95.0

1.95.1

1.96.0rc1

1.96.1

1.97.0rc1

1.97.0

1.98.0rc1

1.98.0

1.99.0rc1

1.99.0

1.100.0rc2

1.100.0rc3

1.100.0

1.101.0rc1

1.101.0

1.102.0rc1

1.102.0

1.103.0rc1

1.103.0

1.104.0rc1

1.104.0

1.105.0rc1

1.105.0

1.105.1

1.106.0rc1

1.106.0

1.107.0rc1

1.107.0

1.108.0rc1

1.108.0

1.109.0rc1

1.109.0rc2

1.109.0rc3

1.109.0

1.110.0rc2

1.110.0rc3

1.110.0

1.111.0rc1

1.111.0rc2

1.111.0

1.111.1

1.112.0rc1

1.112.0

1.113.0rc1

1.113.0

1.114.0rc1

1.114.0rc3

1.114.0

1.115.0rc1

1.115.0rc2

1.115.0

1.116.0rc1

1.116.0rc2

1.116.0

1.117.0rc1

1.117.0

1.118.0rc1

1.118.0

1.119.0rc2

1.119.0

1.120.0rc1

1.120.0