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Potential client DoS for attacker that can create metadata files on the repository

Low
joshuagl published GHSA-2828-9vh6-9m6j Aug 20, 2020

Package

pip tuf (pip)

Affected versions

all

Patched versions

N/A

Description

Impact

An attacker who can gain file access to the repository and modify metadata files may cause a denial of service to clients by creating many invalid signatures on a metadata file. Having a large number of signatures to verify will delay the moment when the client will determine the signature is not valid. This delay may be for at least a few minutes, but possibly could be longer especially if multiple files are impacted.

The tuf maintainers would like to thank Erik MacLean of Analog Devices, Inc. for reporting this issue.

Patches

No fix exists for this issue.

Workarounds

No workarounds are known for this issue.

References

Severity

Low

CVE ID

CVE-2020-6173

Weaknesses

No CWEs