Buffer Overflow Affecting python3-tools package, versions <0:3.7.9-1.amzn2.0.2


Severity

Recommended
0.0
medium
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
3.1% (92nd percentile)

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  • Snyk IDSNYK-AMZN2-PYTHON3TOOLS-1696775
  • published27 Sept 2021
  • disclosed19 Jan 2021

Introduced: 19 Jan 2021

CVE-2021-3177  (opens in a new tab)
CWE-120  (opens in a new tab)
First added by Snyk

How to fix?

Upgrade Amazon-Linux:2 python3-tools to version 0:3.7.9-1.amzn2.0.2 or higher.
This issue was patched in ALAS2-2021-1611.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python3-tools package and not the python3-tools package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 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