CVE-2021-41945 : Encode OSS httpx < 0.23.0 is affected by improper input validation in `httpx.URL

Encode OSS httpx < 0.23.0 is affected by improper input validation in `httpx.URL`, `httpx.Client` and some functions using `httpx.URL.copy_with`.

Published 2022-04-28 14:15:08

Updated 2022-10-12 02:40:47

Source MITRE

View at NVD, CVE.org

Vulnerability category: Input validation

Products affected by CVE-2021-41945

Encode » Httpx » For Python
Versions before (<) 0.23.0
cpe:2.3:a:encode:httpx:*:*:*:*:*:python:*:*
Matching versions

EPSS FAQ

0.17%

Probability of exploitation activity in the next 30 days EPSS Score History

~ 54 %

Percentile, the proportion of vulnerabilities that are scored at or less

Base Score	Base Severity	CVSS Vector	Exploitability Score	Impact Score	Score Source
6.4	MEDIUM	AV:N/AC:L/Au:N/C:P/I:P/A:N	10.0	4.9	NIST
Access Vector: Network Access Complexity: Low Authentication: None Confidentiality Impact: Partial Integrity Impact: Partial Availability Impact: None
9.1	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N	3.9	5.2	NIST
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: None
9.1	CRITICAL	AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N	N/A	N/A	Oracle:CPUOct2023
Attack Vector: Network Attack Complexity: Low Privileges Required: None User Interaction: None Scope: Unchanged Confidentiality: High Integrity: High Availability: None

CWE-20 Improper Input Validation

The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.

Assigned by: nvd@nist.gov (Primary)

http://encode.com

Encode | Security Analytics & Response Orchestration
Vendor Advisory
https://github.com/encode/httpx/issues/2184

Some URL can make httpx use URL with wrong info · Issue #2184 · encode/httpx · GitHub
Exploit;Issue Tracking;Third Party Advisory
https://github.com/encode/httpx/discussions/1831

Potential security issue by abuse the URL object · Discussion #1831 · encode/httpx · GitHub
Exploit;Issue Tracking;Third Party Advisory
https://github.com/encode/httpx/releases/tag/0.23.0

Release Version 0.23.0 · encode/httpx · GitHub
Release Notes;Third Party Advisory
https://gist.github.com/lebr0nli/4edb76bbd3b5ff993cf44f2fbce5e571

httpx PoC · GitHub
Exploit;Third Party Advisory
https://github.com/encode/httpx

GitHub - encode/httpx: A next generation HTTP client for Python. 🦋
Product;Third Party Advisory

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