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Advisory severityHigh7.5Vendor: MediumRed Hat Linux

High [CVE-2020-10735] flaw was found in python

This high-severity Red Hat Linux advisory covers CVE-2020-10735 affecting Red Hat Enterprise Linux 8.6 Extended Update Support, Red Hat Enterprise Linux 9, Red Hat Software Collections for Red Hat Enterprise Linux 7.

Aggregated and source-linked by VulniPulse. Data sources, validation and limitations.

CVE-2020-10735 Source published Source updated

VulniPulse record published

CVE-2020-10735
Affected products & platforms
Red Hat LinuxRed Hat Enterprise Linux
Open source advisory

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Summary

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. This algorithmic complexity vulnerability is triggered when an application attempts to parse a string containing an excessive number of digits.

Versions of `python36:3.6/python36` as shipped with Red Hat Enterprise Linux 8 are marked as 'Not affected' as they just provide "symlinks" to the main `python3` component, which provides the actual interpreter of the Python programming language. Python 2 has been declared end of life and no patches will be made available for it.

Red Hat severity: Moderate — CVSS 7.5 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H). Weakness: CWE-770.

Affected Red Hat products: Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 8.6 Extended Update Support; Red Hat Enterprise Linux 9; Red Hat Software Collections for Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 5; Red Hat Enterprise Linux 6; Red Hat Enterprise Linux 7; Red Hat Quay 3; Red Hat Software Collections.

Affected products named by the advisory: Red Hat package: python3.9.

Affected versions

No affected-version range was extracted from the source record. The vendor advisory is authoritative — check it before change work.

Official advisory · high-confidence parse· fetched 6 days ago·verify at source

Fixed versions
  • python3-0:3.6.8-48.el8_7.1
  • python38:3.8-8080020221221151857.0d9ba776
  • python38-devel:3.8-8080020221221151857.0d9ba776
  • python39:3.9-8080020221221152015.aed85c85
  • python39-devel:3.9-8080020221221152015.aed85c85
  • python3-0:3.6.8-47.el8_6.4
  • python3.9-0:3.9.10-3.el9_0
  • rh-python38-python-0:3.8.14-1.el7
  • RHSA-2023:0833
  • RHSA-2023:2763
  • RHSA-2023:2764
  • RHSA-2024:0430
  • RHSA-2022:7323
  • RHSA-2022:6766

Official advisory · high-confidence parse· fetched 6 days ago·verify at source

Mitigation

Upgrade to a fixed release: python3-0:3.6.8-48.el8_7.1, python38:3.8-8080020221221151857.0d9ba776, python38-devel:3.8-8080020221221151857.0d9ba776, python39:3.9-8080020221221152015.aed85c85, python39-devel:3.9-8080020221221152015.aed85c85, python3-0:3.6.8-47.el8_6.4. That is the remediation for this advisory.

The vendor advisory may list additional interim mitigations or workarounds not captured here — review it before change work.

Official advisory · high-confidence parse· fetched 6 days ago·verify at source

Discussion(0)

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