CVE-2021-33571

Description

In Django 2.2 before 2.2.24, 3.x before 3.1.12, and 3.2 before 3.2.4, URLValidator, validate_ipv4_address, and validate_ipv46_address do not prohibit leading zero characters in octal literals. This may allow a bypass of access control that is based on IP addresses. (validate_ipv4_address and validate_ipv46_address are unaffected with Python 3.9.5+..) .

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.01%
Vendor Advisory fedoraproject.org Vendor Advisory djangoproject.com Vendor Advisory djangoproject.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://docs.djangoproject.com/en/3.2/releases/security/ patch vendor advisory
https://groups.google.com/g/django-announce/c/sPyjSKMi8Eo third party advisory mailing list
https://www.djangoproject.com/weblog/2021/jun/02/security-releases/ patch vendor advisory
https://security.netapp.com/advisory/ntap-20210727-0004/ third party advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/B4SQG2EAF4WCI2SLRL6XRDJ3RPK3ZRDV/ vendor advisory
https://github.com/django/django/commit/f27c38ab5d90f68c9dd60cabef248a570c0be8fc
https://github.com/django/django/commit/203d4ab9ebcd72fc4d6eb7398e66ed9e474e118e
https://github.com/django/django/commit/9f75e2e562fa0c0482f3dde6fc7399a9070b4a3d

Frequently Asked Questions

What is the severity of CVE-2021-33571?
CVE-2021-33571 has been scored as a high severity vulnerability.
How to fix CVE-2021-33571?
To fix CVE-2021-33571, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-33571 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2021-33571 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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