QID 375537

Date Published: 2021-05-10

QID 375537: Python Buffer Overflow/Web Cache Poisoning Vulnerability

Python is an interpreted, high-level and general-purpose programming language.

CVE-2021-3177 : A vulnerability in Python 3 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.

Affected Versions:
Python Versions 3.X up to 3.6.12
Python Versions 3.7.0 up to 3.7.9
Python Versions 3.8.0 up to 3.8.7
Python Versions 3.9.0 up to 3.9.1

CVE-2021-23336 : A vulnerability in python may lead to Web Cache Poisoning via urllib.parse.parse_qsl and urllib.parse.parse_qs by using a vector called parameter cloaking. Affected Versions:
Python Versions 0.X up to 3.6.12
Python Versions 3.7.0 up to 3.7.9
Python Versions 3.8.0 up to 3.8.7
Python Versions 3.9.0 up to 3.9.1

QID Detection Logic(Authenticated):
Detects the installed python version either from py.exe or patchlevel.h file.

Successful exploitation of these vulnerability may allow an attacker to execute arbitrary command on the target system.

  • CVSS V3 rated as Critical - 9.8 severity.
  • CVSS V2 rated as High - 7.5 severity.
    • Solution
    Vendor has release fix to this issue.
    Refer to issue trackerCVE-2021-3177 to address this vulnerability and obtain further details.
    Vendor References

    CVEs related to QID 375537

    CVE-2021-3177 | CVE-2021-23336 |
    Software Advisories
    Advisory ID Software Component Link
    CVE-2021-23336 URL Logo www.python.org/downloads/release/python-392/
    CVE-2021-3177 URL Logo www.python.org/downloads/release/python-392/
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