VulnerabilityModified
CVE-2021-33571
This may allow a bypass of access control that is based on IP addresses.
HIGH 7.5EPSS 5.26%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (5.26%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- EPSS
- 5.26% probability · 92th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-918
- Affected
- djangoproject/django · fedoraproject/fedora
- Source
- cve@mitre.org
References
- https://docs.djangoproject.com/en/3.2/releases/security/Patch, Vendor Advisory
- https://github.com/django/django/commit/203d4ab9ebcd72fc4d6eb7398e66ed9e474e118e
- https://github.com/django/django/commit/9f75e2e562fa0c0482f3dde6fc7399a9070b4a3d
- https://github.com/django/django/commit/f27c38ab5d90f68c9dd60cabef248a570c0be8fc
- https://groups.google.com/g/django-announce/c/sPyjSKMi8EoMailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/B4SQG2EAF4WCI2SLRL6XRDJ3RPK3ZRDV/
- https://security.netapp.com/advisory/ntap-20210727-0004/Third Party Advisory
- https://www.djangoproject.com/weblog/2021/jun/02/security-releases/Patch, Vendor Advisory
- https://docs.djangoproject.com/en/3.2/releases/security/Patch, Vendor Advisory
- https://github.com/django/django/commit/203d4ab9ebcd72fc4d6eb7398e66ed9e474e118e
- https://github.com/django/django/commit/9f75e2e562fa0c0482f3dde6fc7399a9070b4a3d
- https://github.com/django/django/commit/f27c38ab5d90f68c9dd60cabef248a570c0be8fc
- https://groups.google.com/g/django-announce/c/sPyjSKMi8EoMailing List, Third Party Advisory
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/B4SQG2EAF4WCI2SLRL6XRDJ3RPK3ZRDV/
- https://security.netapp.com/advisory/ntap-20210727-0004/Third Party Advisory
- https://www.djangoproject.com/weblog/2021/jun/02/security-releases/Patch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.