CVE-2021-45115
Description
An issue was discovered in Django 2.2 before 2.2.26, 3.2 before 3.2.11, and 4.0 before 4.0.1. UserAttributeSimilarityValidator incurred significant overhead in evaluating a submitted password that was artificially large in relation to the comparison values. In a situation where access to user registration was unrestricted, this provided a potential vector for a denial-of-service attack.
Predictions
Heuristic predictions, AS-IS, for prioritization only.
Mitigations
No mitigations published for this CVE yet.
The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.
✚ Propose a mitigation on Community → Mitigations published via the community go through AI scoring + 2 human reviewers + 7-day silent objection window before landing here withsource_tier=community-verified.
OS impact
SUSE Affected 1 release
| Version | Status | Fixed in |
|---|---|---|
| — | Affected | — |
Debian Fixed 5 releases
| Version | Status | Fixed in |
|---|---|---|
| trixie | Fixed | 2:3.2.11-1 |
| sid | Fixed | 2:3.2.11-1 |
| forky | Fixed | 2:3.2.11-1 |
| bullseye | Fixed | 2:2.2.26-1~deb11u1 |
| bookworm | Fixed | 2:3.2.11-1 |
Rocky Linux Fixed 1 release
| Version | Status | Fixed in |
|---|---|---|
| 8 | Fixed | — |
References
- https://nvd.nist.gov/vuln/detail/CVE-2021-45115
- https://github.com/django/django/commit/2135637fdd5ce994de110affef9e67dffdf77277
- https://github.com/django/django/commit/a8b32fe13bcaed1c0b772fdc53de84abc224fb20
- https://github.com/django/django/commit/df79ef03ac867c93caaa6be56bc69e66abfeef8f
- https://docs.djangoproject.com/en/4.0/releases/security
- https://github.com/advisories/GHSA-53qw-q765-4fww
- https://github.com/django/django
- https://github.com/pypa/advisory-database/tree/main/vulns/django/PYSEC-2022-1.yaml
- https://groups.google.com/forum/#!forum/django-announce
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/B4SQG2EAF4WCI2SLRL6XRDJ3RPK3ZRDV
- https://security.netapp.com/advisory/ntap-20220121-0005
- https://www.djangoproject.com/weblog/2022/jan/04/security-releases
- https://docs.djangoproject.com/en/4.0/releases/security/
- https://www.djangoproject.com/weblog/2022/jan/04/security-releases/
- https://www.suse.com/security/cve/CVE-2021-45115.html
- https://errata.rockylinux.org/RLSA-2022:5498
- https://security-tracker.debian.org/tracker/CVE-2021-45115
Community-verified mitigations for this CVE will appear above when contributors publish them.
Verify integrity in audit chain (admin only). AS-IS.