Python 3.x through 3.9.1 has a buffer overflow in PyCArg_repr in _ctypes/callproc.c, which may lead to remote code execution in certain Python applications that accept floating-point numbers as untrusted input, as demonstrated by a 1e300 argument to c_double.from_param. This occurs because sprintf is used unsafely.
Published 2021-01-19 06:15:13
Updated 2023-05-24 21:15:10
Source MITRE
View at NVD,   CVE.org
Vulnerability category: OverflowExecute code

Threat overview for CVE-2021-3177

Top countries where our scanners detected CVE-2021-3177
Top open port discovered on systems with this issue 80
IPs affected by CVE-2021-3177 237,327
Threat actors abusing to this issue? Yes
Find out if you* are affected by CVE-2021-3177!
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Exploit prediction scoring system (EPSS) score for CVE-2021-3177

3.12%
Probability of exploitation activity in the next 30 days EPSS Score History
~ 91 %
Percentile, the proportion of vulnerabilities that are scored at or less

CVSS scores for CVE-2021-3177

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source First Seen
7.5
HIGH AV:N/AC:L/Au:N/C:P/I:P/A:P
10.0
6.4
NIST
9.8
CRITICAL CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
3.9
5.9
NIST

CWE ids for CVE-2021-3177

References for CVE-2021-3177

Products affected by CVE-2021-3177

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