CVE-2024-53863

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Source
https://cve.org/CVERecord?id=CVE-2024-53863
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-53863.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2024-53863
Aliases
Downstream
Related
Published
2024-12-03T16:48:29.722Z
Modified
2026-04-11T12:47:11.746645Z
Severity
  • 8.2 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
Synapse can be forced to thumbnail unexpected file formats, invoking external, potentially untrustworthy decoders
Details

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.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2024/53xxx/CVE-2024-53863.json",
    "cwe_ids": [
        "CWE-434"
    ]
}
References

Affected packages

Git / github.com/element-hq/synapse

Affected ranges

Type
GIT
Repo
https://github.com/element-hq/synapse
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
fe3d88b833f76742874642c119b14b788341c905
Database specific 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.120.1"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

Other
hhs-1
hhs-2
hhs-3
hhs-5
hhs-6
hhs-7
hhs-8
v0.*
v0.10.0
v0.10.0-r1
v0.10.0-r2
v0.11.0
v0.11.0-r1
v0.11.0-r2
v0.11.1
v0.12.0
v0.13.1
v0.13.2
v0.13.3
v0.14.0
v0.16.0
v0.16.1
v0.16.1-r1
v0.17.0
v0.17.1
v0.17.2
v0.17.3
v0.18.0
v0.18.1
v0.18.2
v0.18.3
v0.18.4
v0.18.5
v0.2.0
v0.2.1
v0.2.1a
v0.2.2
v0.23.0-rc1
v0.23.0-rc2
v0.25.0-rc1
v0.28.0-rc1
v0.3.0
v0.3.3
v0.3.4
v0.32.0
v0.32.0rc1
v0.32.2
v0.4.1
v0.4.2
v0.5.0
v0.5.1
v0.5.2
v0.5.3
v0.5.3a
v0.5.3b
v0.5.3c
v0.5.4
v0.5.4a
v0.6.0
v0.6.0a
v0.6.0b
v0.6.1
v0.6.1a
v0.6.1b
v0.6.1c
v0.6.1d
v0.6.1e
v0.6.1f
v0.7.0
v0.7.0a
v0.7.0b
v0.7.0c
v0.7.0d
v0.7.0e
v0.7.0f
v0.7.1
v0.7.1-r1
v0.7.1-r2
v0.7.1-r3
v0.7.1-r4
v0.8.0
v0.8.1
v0.8.1-r1
v0.8.1-r2
v0.8.1-r3
v0.8.1-r4
v0.9.0
v0.9.0-r1
v0.9.0-r2
v0.9.0-r3
v0.9.0-r4
v0.9.0-r5
v0.9.1
v0.9.2
v0.9.2-r1
v0.9.2-r2
v0.9.3
v0.99.1rc1
v0.99.2rc1
v0.99.4rc1
v0.99.5.1.dev0
v1.*
v1.1.0rc1
v1.1.0rc2
v1.10.0rc1
v1.100.0rc1
v1.100.0rc2
v1.100.0rc3
v1.101.0rc1
v1.103.0rc1
v1.104.0rc1
v1.105.0rc1
v1.106.0rc1
v1.11.0rc1
v1.111.0rc1
v1.112.0rc1
v1.114.0rc1
v1.115.0rc1
v1.116.0rc1
v1.12.0rc1
v1.120.0
v1.120.0rc1
v1.14.0rc1
v1.15.0rc1
v1.16.0rc1
v1.17.0rc1
v1.18.0rc1
v1.23.0rc1
v1.24.0rc1
v1.27.0rc1
v1.29.0rc1
v1.3.0rc1
v1.30.0rc1
v1.31.0rc1
v1.32.0rc1
v1.34.0rc1
v1.35.0rc1
v1.36.0rc1
v1.4.0rc1
v1.40.0rc1
v1.49.0rc1
v1.5.0rc1
v1.52.0rc1
v1.6.0rc1
v1.62.0rc1
v1.63.0rc1
v1.75.0rc1
v1.76.0rc1
v1.78.0rc1
v1.79.0rc1
v1.8.0rc1
v1.81.0rc1
v1.84.0rc1
v1.87.0rc1
v1.88.0rc1
v1.9.0.dev1
v1.9.0.dev2
v1.9.0rc1
v1.90.0rc1
v1.94.0rc1
v1.95.0rc1
v1.98.0rc1
v1.99.0rc1

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2024-53863.json"