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Buffer Overflow Affecting python3.5 package, versions <3.5.2-2ubuntu0~16.04.4~14.04.1+esm1

Severity

 Recommended
medium

Based on Ubuntu security rating

    Threat Intelligence

    EPSS
    3.1% (92nd percentile)

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  • Snyk ID SNYK-UBUNTU1404-PYTHON35-1618992
  • published 29 Jan 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 Ubuntu:14.04 python3.5 to version 3.5.2-2ubuntu016.04.414.04.1+esm1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream python3.5 package and not the python3.5 package as distributed by Ubuntu. See How to fix? for Ubuntu:14.04 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
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NVD

9.8 critical
  • Attack Vector (AV)
    Network
  • Attack Complexity (AC)
    Low
  • Privileges Required (PR)
    None
  • User Interaction (UI)
    None
  • Scope (S)
    Unchanged
  • Confidentiality (C)
    High
  • Integrity (I)
    High
  • Availability (A)
    High
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SUSE

5.9 medium
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Red Hat

5.9 medium