Instituto Nacional de ciberseguridad. Sección Incibe
Instituto Nacional de Ciberseguridad. Sección INCIBE-CERT

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CVE-2020-10735

Severity CVSS v4.0:
Pending analysis
Type:
CWE-704 Incorrect Type Conversion or Cast
Publication date:
09/09/2022
Last modified:
30/06/2023

Description

A flaw was found in python. In algorithms with quadratic time complexity using non-binary bases, when using int("text"), a system could take 50ms to parse an int string with 100,000 digits and 5s for 1,000,000 digits (float, decimal, int.from_bytes(), and int() for binary bases 2, 4, 8, 16, and 32 are not affected). The highest threat from this vulnerability is to system availability.

Impact

Vector 3.x
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 7.50 HIGH
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

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

Base Score 3.x
7.50
Severity 3.x
HIGH

Vulnerable products and versions

CPE From Up to
cpe:2.3:a:python:python:*:*:*:*:*:*:*:* 3.7.0 (including) 3.7.14 (excluding)
cpe:2.3:a:python:python:*:*:*:*:*:*:*:* 3.8.0 (including) 3.8.14 (excluding)
cpe:2.3:a:python:python:*:*:*:*:*:*:*:* 3.9.0 (including) 3.9.14 (excluding)
cpe:2.3:a:python:python:*:*:*:*:*:*:*:* 3.10.0 (including) 3.10.7 (excluding)
cpe:2.3:a:python:python:3.11.0:alpha1:*:*:*:*:*:*
cpe:2.3:a:python:python:3.11.0:alpha2:*:*:*:*:*:*
cpe:2.3:a:python:python:3.11.0:alpha3:*:*:*:*:*:*
cpe:2.3:a:python:python:3.11.0:alpha4:*:*:*:*:*:*
cpe:2.3:a:python:python:3.11.0:alpha5:*:*:*:*:*:*
cpe:2.3:a:python:python:3.11.0:alpha6:*:*:*:*:*:*
cpe:2.3:a:python:python:3.11.0:alpha7:*:*:*:*:*:*
cpe:2.3:a:python:python:3.11.0:beta1:*:*:*:*:*:*
cpe:2.3:a:python:python:3.11.0:beta2:*:*:*:*:*:*
cpe:2.3:a:python:python:3.11.0:beta3:*:*:*:*:*:*
cpe:2.3:a:python:python:3.11.0:beta4:*:*:*:*:*:*

To consult the complete list of CPE names with products and versions, see this page


References to Advisories, Solutions, and Tools