Vulnerability in Apache Airflow
CVE-2021-29621
Flask-AppBuilder is a development framework, built on top of Flask. User enumeration in database authentication in Flask-AppBuilder <= 3.2.3. Allows for a non authenticated user to enumerate existing accounts by timing the response time from the server when you are logging in. Upgrade to version 3.3.0 or higher to resolve.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.034 (88.4th percentile), scored .
Low probability of exploitation in the next 30 days, but still tracked. 88th percentile — 88.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.034 · newest: 0.034 · change: 0.000
Affected products
- Apache Airflow — versions 1.10.0
- Dpgaspar Flask-Appbuilder — versions < 3.3.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/dpgaspar/Flask-AppBuilder/security/advisories/GHSA-434h-p4gx-jm89 (Third Party Advisory)
- github.com/dpgaspar/Flask-AppBuilder/commit/780bd0e8fbf2d36ada52edb769477e0a4ed… (Patch, Third Party Advisory)
- pypi.org/project/Flask-AppBuilder/ (Product, Third Party Advisory)
- lists.apache.org/thread.html/r5b754118ba4e996adf03863705d34168bffec202da5c6bdc9… (mailing-list)
- lists.apache.org/thread.html/r466759f377651f0a690475d5a52564d0e786e82c08d5a5730… (mailing-list)
- lists.apache.org/thread.html/r91067f953906d93aaa1c69fe2b5472754019cc6bd4f1ba813… (mailing-list)
Frequently asked questions
- What is CVE-2021-29621?
- CVE-2021-29621 is a medium-severity vulnerability in Apache Airflow, classified under Observable Discrepancy. CVSS score: 5.3/10. Published 2021-06-07.
- How severe is CVE-2021-29621?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2021-29621 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.