Buffer Overflow Affecting platform-python package, versions <0:3.6.8-37.el8


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
2.51% (90th percentile)

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  • Snyk IDSNYK-RHEL8-PLATFORMPYTHON-3984612
  • published26 Jul 2021
  • disclosed19 Jan 2021

Introduced: 19 Jan 2021

CVE-2021-3177  (opens in a new tab)
CWE-120  (opens in a new tab)

How to fix?

Upgrade RHEL:8 platform-python to version 0:3.6.8-37.el8 or higher.
This issue was patched in RHSA-2021:1633.

NVD Description

Note: Versions mentioned in the description apply only to the upstream platform-python package and not the platform-python package as distributed by RHEL. See How to fix? for RHEL:8 relevant fixed versions and status.

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

CVSS Scores

version 3.1