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

CVE-2021-23336 - bugs.python.org/issue42967
CVE-2021-3177 - bugs.python.org/issue42938

CVEs related to QID 375537

CVE-2021-3177 | CVE-2021-23336 |

Software Advisories

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

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