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Buffer Overflow Affecting python package, versions <0:2.7.18-1.amzn2.0.3

0.0
medium

Snyk CVSS

    Attack Complexity High
    Availability High

    Threat Intelligence

    EPSS 4.04% (92nd percentile)
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NVD
9.8 critical
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SUSE
5.9 medium
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Red Hat
5.9 medium

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  • Snyk ID SNYK-AMZN2-PYTHON-1696762
  • published 27 Sep 2021
  • disclosed 19 Jan 2021
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Introduced: 19 Jan 2021

CVE-2021-3177 Open this link in a new tab
CWE-120 Open this link in a new tab

How to fix?

Upgrade Amazon-Linux:2 python to version 0:2.7.18-1.amzn2.0.3 or higher.
This issue was patched in ALAS2-2021-1611.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python package and not the python 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