vulnerability
Ubuntu: (Multiple Advisories) (CVE-2021-3177): Python vulnerabilities
| Severity | CVSS | Published | Added | Modified |
|---|---|---|---|---|
| 8 | (AV:N/AC:L/Au:N/C:P/I:P/A:P) | Jan 19, 2021 | Feb 26, 2021 | Apr 16, 2026 |
Severity
8
CVSS
(AV:N/AC:L/Au:N/C:P/I:P/A:P)
Published
Jan 19, 2021
Added
Feb 26, 2021
Modified
Apr 16, 2026
Description
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.
Solutions
ubuntu-pro-upgrade-python2-7ubuntu-pro-upgrade-python2-7-minimalubuntu-pro-upgrade-python3-11ubuntu-pro-upgrade-python3-11-minimalubuntu-pro-upgrade-python3-4ubuntu-pro-upgrade-python3-4-minimalubuntu-pro-upgrade-python3-5ubuntu-pro-upgrade-python3-5-minimalubuntu-pro-upgrade-python3-6ubuntu-pro-upgrade-python3-6-minimalubuntu-pro-upgrade-python3-7ubuntu-pro-upgrade-python3-7-minimalubuntu-pro-upgrade-python3-8ubuntu-pro-upgrade-python3-8-minimalubuntu-pro-upgrade-python3-9ubuntu-pro-upgrade-python3-9-minimalubuntu-upgrade-python2-7ubuntu-upgrade-python2-7-minimalubuntu-upgrade-python3-10ubuntu-upgrade-python3-10-minimalubuntu-upgrade-python3-11ubuntu-upgrade-python3-11-minimalubuntu-upgrade-python3-12ubuntu-upgrade-python3-12-minimalubuntu-upgrade-python3-5ubuntu-upgrade-python3-5-minimalubuntu-upgrade-python3-6ubuntu-upgrade-python3-6-minimalubuntu-upgrade-python3-7ubuntu-upgrade-python3-7-minimalubuntu-upgrade-python3-8ubuntu-upgrade-python3-8-minimal
References
Rapid7 Labs
2026 Global Threat Landscape Report
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