Vulnerabilities > CVE-2021-29510 - Infinite Loop vulnerability in multiple products

CVSS 7.5 - HIGH

Attack vector

NETWORK

Attack complexity

LOW

Privileges required

NONE

Confidentiality impact

NONE

Integrity impact

NONE

Availability impact

HIGH

network

low complexity

pydantic-project

fedoraproject

CWE-835

NVD

Published: 2021-05-13

Updated: 2023-11-07

Summary

Pydantic is a data validation and settings management using Python type hinting. In affected versions passing either `'infinity'`, `'inf'` or `float('inf')` (or their negatives) to `datetime` or `date` fields causes validation to run forever with 100% CPU usage (on one CPU). Pydantic has been patched with fixes available in the following versions: v1.8.2, v1.7.4, v1.6.2. All these versions are available on pypi(https://pypi.org/project/pydantic/#history), and will be available on conda-forge(https://anaconda.org/conda-forge/pydantic) soon. See the changelog(https://pydantic-docs.helpmanual.io/) for details. If you absolutely can't upgrade, you can work around this risk using a validator(https://pydantic-docs.helpmanual.io/usage/validators/) to catch these values. This is not an ideal solution (in particular you'll need a slightly different function for datetimes), instead of a hack like this you should upgrade pydantic. If you are not using v1.8.x, v1.7.x or v1.6.x and are unable to upgrade to a fixed version of pydantic, please create an issue at https://github.com/samuelcolvin/pydantic/issues requesting a back-port, and we will endeavour to release a patch for earlier versions of pydantic.

Vulnerable Configurations

Part	Description	Count
Application	Pydantic_Project Pydantic Project Pydantic 1.8 Pydantic Project Pydantic 1.8.1 Pydantic Project Pydantic 1.7 Pydantic Project Pydantic 1.7.1 Pydantic Project Pydantic 1.7.2 Pydantic Project Pydantic 1.7.3 Pydantic Project Pydantic - Pydantic Project Pydantic 0.0.2 Pydantic Project Pydantic 0.0.3 Pydantic Project Pydantic 0.0.4 Pydantic Project Pydantic 0.0.5 Pydantic Project Pydantic 0.0.6 Pydantic Project Pydantic 0.0.7 Pydantic Project Pydantic 0.0.8 Pydantic Project Pydantic 0.1 Pydantic Project Pydantic 0.2 Pydantic Project Pydantic 0.2.1 Pydantic Project Pydantic 0.3 Pydantic Project Pydantic 0.4 Pydantic Project Pydantic 0.5 Pydantic Project Pydantic 0.6 Pydantic Project Pydantic 0.6.1 Pydantic Project Pydantic 0.6.2 Pydantic Project Pydantic 0.6.3 Pydantic Project Pydantic 0.6.4 Pydantic Project Pydantic 0.7 Pydantic Project Pydantic 0.7.1 Pydantic Project Pydantic 0.8 Pydantic Project Pydantic 0.9 Pydantic Project Pydantic 0.9.1 Pydantic Project Pydantic 0.10 Pydantic Project Pydantic 0.11 Pydantic Project Pydantic 0.11.1 Pydantic Project Pydantic 0.11.2 Pydantic Project Pydantic 0.12 Pydantic Project Pydantic 0.12.1 Pydantic Project Pydantic 0.13 Pydantic Project Pydantic 0.13.1 Pydantic Project Pydantic 0.14 Pydantic Project Pydantic 0.15 Pydantic Project Pydantic 0.16 Pydantic Project Pydantic 0.16.1 Pydantic Project Pydantic 0.17 Pydantic Project Pydantic 0.18 Pydantic Project Pydantic 0.18.1 Pydantic Project Pydantic 0.18.2 Pydantic Project Pydantic 0.19 Pydantic Project Pydantic 0.20 Pydantic Project Pydantic 0.20.1 Pydantic Project Pydantic 0.21 Pydantic Project Pydantic 0.22 Pydantic Project Pydantic 0.23 Pydantic Project Pydantic 0.24 Pydantic Project Pydantic 0.25 Pydantic Project Pydantic 0.26 Pydantic Project Pydantic 0.27 Pydantic Project Pydantic 0.28 Pydantic Project Pydantic 0.29 Pydantic Project Pydantic 0.30 Pydantic Project Pydantic 0.30.1 Pydantic Project Pydantic 0.31 Pydantic Project Pydantic 0.31.1 Pydantic Project Pydantic 0.32 Pydantic Project Pydantic 0.32.1 Pydantic Project Pydantic 0.32.2 Pydantic Project Pydantic 1.0 Pydantic Project Pydantic 1.1 Pydantic Project Pydantic 1.1.1 Pydantic Project Pydantic 1.2 Pydantic Project Pydantic 1.3 Pydantic Project Pydantic 1.4 Pydantic Project Pydantic 1.5 Pydantic Project Pydantic 1.5.1 Pydantic Project Pydantic 1.6 Pydantic Project Pydantic 1.6.1	79
OS	Fedoraproject Fedoraproject Fedora 33 Fedoraproject Fedora 34	2

Common Weakness Enumeration (CWE)

CWE-835 - Loop with Unreachable Exit Condition ('Infinite Loop')

Summary

Vulnerable Configurations

Common Weakness Enumeration (CWE)

References