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Potential double free of buffer during string decoding

Moderate severity GitHub Reviewed Published Jul 2, 2022 in ultrajson/ultrajson • Updated Jan 27, 2023

Package

pip ujson (pip)

Affected versions

< 5.4.0

Patched versions

5.4.0

Description

Impact

What kind of vulnerability is it? Who is impacted?

When an error occurs while reallocating the buffer for string decoding, the buffer gets freed twice.

Due to how UltraJSON uses the internal decoder, this double free is impossible to trigger from Python.

Patches

Has the problem been patched? What versions should users upgrade to?

Users should upgrade to UltraJSON 5.4.0.

Workarounds

Is there a way for users to fix or remediate the vulnerability without upgrading?

There is no workaround.

For more information

If you have any questions or comments about this advisory:

References

@hugovk hugovk published to ultrajson/ultrajson Jul 2, 2022
Published by the National Vulnerability Database Jul 5, 2022
Published to the GitHub Advisory Database Jul 5, 2022
Reviewed Jul 5, 2022
Last updated Jan 27, 2023

Severity

Moderate
5.9
/ 10

CVSS base metrics

Attack vector
Network
Attack complexity
High
Privileges required
None
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses

CVE ID

CVE-2022-31117

GHSA ID

GHSA-fm67-cv37-96ff

Source code

Credits

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