CVE-2021-33430
Last modified
CVE-2021-33430 is a medium-severity vulnerability rated 5.3/10 on the CVSS scale. A Buffer Overflow vulnerability exists in NumPy 1.9.x in the PyArray_NewFromDescr_int function of ctors.c when specifying arrays of large dimensions (over 32) from Python code, which could let a malicious user cause a Denial of Service. NOTE: The vendor does not agree this is a vulneraility; In (very limited) circumstances a user may be able provoke the buffer overflow, the user is most likely already privileged to at least provoke denial of service by exhausting memory. EPSS estimates a 1.07% chance of exploitation in the next 30 days.
Description
A Buffer Overflow vulnerability exists in NumPy 1.9.x in the PyArray_NewFromDescr_int function of ctors.c when specifying arrays of large dimensions (over 32) from Python code, which could let a malicious user cause a Denial of Service. NOTE: The vendor does not agree this is a vulneraility; In (very limited) circumstances a user may be able provoke the buffer overflow, the user is most likely already privileged to at least provoke denial of service by exhausting memory. Triggering this further requires the use of uncommon API (complicated structured dtypes), which is very unlikely to be available to an unprivileged user
Metrics
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Numpy | Numpy | >= 1.9.0, <= 1.9.3 |
References
- https://github.com/numpy/numpy/issues/18939Exploit, Third Party Advisory
- https://github.com/numpy/numpy/issues/18939Exploit, Third Party Advisory
Timeline
- Published
- Last Modified
- Status
- Modified
Frequently Asked Questions
What is CVE-2021-33430?
How severe is CVE-2021-33430?
How do I fix CVE-2021-33430?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2021
- CVE-2021-33403An integer overflow in the transfer function of a smart cont…7.5
- CVE-2021-33408Local File Inclusion vulnerability in Ab Initio Control>Cent…6.5
- CVE-2021-3341A path traversal vulnerability in the DxWebEngine component …7.5
- CVE-2021-3342EPrints 3.4.2 allows remote attackers to read arbitrary file…9.8
- CVE-2021-33420A deserialization issue discovered in inikulin replicator be…9.8
- CVE-2021-33425A stored cross-site scripting (XSS) vulnerability was discov…5.4
- CVE-2021-33436NoMachine for Windows prior to version 6.15.1 and 7.5.2 suff…7.3
- CVE-2021-33437An issue was discovered in mjs (mJS: Restricted JavaScript e…5.5
- CVE-2021-33438An issue was discovered in mjs (mJS: Restricted JavaScript e…5.5
- CVE-2021-33439An issue was discovered in mjs (mJS: Restricted JavaScript e…5.5
- CVE-2021-3344A privilege escalation flaw was found in OpenShift builder. …8.8
- CVE-2021-33440An issue was discovered in mjs (mJS: Restricted JavaScript e…5.5
Are you affected by CVE-2021-33430?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST