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CVE-2020-10735

HIGHCVSS 7.5/10EPSS 3.21%

Last modified

CVE-2020-10735 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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). EPSS estimates a 3.21% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability
3.21%

86.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersionsUpdate
PythonPython>= 3.7.0, < 3.7.14—
PythonPython>= 3.8.0, < 3.8.14—
PythonPython>= 3.9.0, < 3.9.14—
PythonPython>= 3.10.0, < 3.10.7—
PythonPython3.11.0Alpha1
RedhatQuay3.0.0—
RedhatSoftware CollectionsAll versions—
FedoraprojectFedora35—
FedoraprojectFedora36—
FedoraprojectFedora37—
RedhatEnterprise Linux8.0—

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2020-10735?
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.
How severe is CVE-2020-10735?
CVE-2020-10735 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 3.21% probability of exploitation in the next 30 days.
How do I fix CVE-2020-10735?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-10735?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST