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Ubuntu Security Notice USN-6553-1
December 12, 2023

pydantic vulnerability
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 20.04 LTS (Available with Ubuntu Pro)

Summary:

Pydantic could be made to crash if it received specially crafted
input.

Software Description:
- pydantic: Data validation using Python type hints.

Details:

Nina Jensen discovered that Pydantic incorrectly handled user input in the
date and datetime fields. An attacker could possibly use this issue to
cause a denial of service via application crash. (CVE-2021-29510)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 20.04 LTS (Available with Ubuntu Pro):
   python3-pydantic                1.2-1ubuntu0.1~esm1

In general, a standard system update will make all the necessary changes.

References:
   https://ubuntu.com/security/notices/USN-6553-1
   CVE-2021-29510