Vulnerability Details : CVE-2021-33430
Potential exploit
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
Vulnerability category: OverflowDenial of service
Products affected by CVE-2021-33430
- cpe:2.3:a:numpy:numpy:*:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-33430
0.11%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 31 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-33430
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
3.5
|
LOW | AV:N/AC:M/Au:S/C:N/I:N/A:P |
6.8
|
2.9
|
NIST | |
|
5.3
|
MEDIUM | CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H |
1.6
|
3.6
|
NIST |
CWE ids for CVE-2021-33430
-
The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow.Assigned by: nvd@nist.gov (Primary)
References for CVE-2021-33430
-
https://github.com/numpy/numpy/issues/18939
Potential buffer overflow in PyArray_NewFromDescr_int of ctors.c · Issue #18939 · numpy/numpy · GitHubExploit;Third Party Advisory
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