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Denial of service (via resource exhaustion) due to improper input validation in third-party identifier endpoint

Moderate severity GitHub Reviewed Published May 11, 2021 in matrix-org/synapse • Updated Jan 9, 2023

Package

pip matrix-synapse (pip)

Affected versions

< 1.33.0

Patched versions

1.33.0

Description

Impact

Missing input validation of some parameters on the endpoints used to confirm third-party identifiers could cause excessive use of disk space and memory leading to resource exhaustion.

Patches

The issue is fixed by matrix-org/synapse#9855.

Workarounds

There are no known workarounds.

References

n/a

For more information

If you have any questions or comments about this advisory, email us at [email protected].

References

@babolivier babolivier published to matrix-org/synapse May 11, 2021
Reviewed May 19, 2021
Published to the GitHub Advisory Database May 19, 2021
Last updated Jan 9, 2023

Severity

Moderate

Weaknesses

CVE ID

No known CVE

GHSA ID

GHSA-7h5v-85w9-pq6c

Source code

No known source code
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