Login Request a demo
High severity · published Jun 8, 2021
CVE-2021-33571
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…
7.5
CVSS
5.3%
EPSS
No
On KEV
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+..) .
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)5.3% · higher than 93% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
DJ
Django · Djangoproject
2.2 before 2.2.24; 3.0 before 3.1.12; 3.2 before 3.2.4 · source: NVD
FE
Fedora · Fedoraproject
35 · source: NVD
Affected product
DJ
Django
Djangoproject
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-33571
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-33571
Patch
https://docs.djangoproject.com/en/3.2/releases/security/
github.com
https://github.com/django/django/commit/203d4ab9ebcd72fc4d6eb7398e66ed9e474e118e
github.com
https://github.com/django/django/commit/9f75e2e562fa0c0482f3dde6fc7399a9070b4a3d
github.com
https://github.com/django/django/commit/f27c38ab5d90f68c9dd60cabef248a570c0be8fc
Mailing List
https://groups.google.com/g/django-announce/c/sPyjSKMi8Eo
lists.fedoraproject.org
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/B4SQG2EAF4WCI2SLRL6XRDJ3RPK3ZRDV/
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