CVE-2021-3177critical
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.
References
https://bugs.python.org/issue42938
https://github.com/python/cpython/pull/24239
https://python-security.readthedocs.io/vuln/ctypes-buffer-overflow-pycarg_repr.html
https://security.gentoo.org/glsa/202101-18
https://news.ycombinator.com/item?id=26185005
https://lists.apache.org/thread.html/[email protected]%3Cdev.mina.apache.org%3E
https://security.netapp.com/advisory/ntap-20210226-0003/
https://lists.debian.org/debian-lts-announce/2021/04/msg00005.html
https://www.oracle.com//security-alerts/cpujul2021.html
https://www.oracle.com/security-alerts/cpuoct2021.html
https://www.oracle.com/security-alerts/cpujan2022.html
https://lists.debian.org/debian-lts-announce/2022/02/msg00013.html
Details
Source: MITRE
Published: 2021-01-19
Updated: 2022-07-25
Type: CWE-120
Risk Information
CVSS v2
Base Score: 7.5
Vector: AV:N/AC:L/Au:N/C:P/I:P/A:P
Impact Score: 6.4
Exploitability Score: 10
Severity: HIGH
CVSS v3
Base Score: 9.8
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Impact Score: 5.9
Exploitability Score: 3.9
Severity: CRITICAL