Python 000/100 Non-binary Base float/decimal/int.from_bytes/int denial of service

CVSS Meta Temp Score
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CTI Interest Score
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6.4$0-$5k0.00

Summaryinfo

A vulnerability was found in Python 000/100 and classified as problematic. This impacts the function float/decimal/int.from_bytes/int of the component Non-binary Base Handler. Such manipulation leads to denial of service. This vulnerability is traded as CVE-2020-10735. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in Python 000/100 (Programming Language Software) and classified as problematic. Affected by this issue is the function float/decimal/int.from_bytes/int of the component Non-binary Base Handler. The manipulation with an unknown input leads to a denial of service vulnerability. Using CWE to declare the problem leads to CWE-404. The product does not release or incorrectly releases a resource before it is made available for re-use. Impacted is availability. CVE summarizes:

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.

The weakness was shared 09/10/2022 as 95778. The advisory is shared for download at github.com. This vulnerability is handled as CVE-2020-10735 since 03/20/2020. There are known technical details, but no exploit is available. The MITRE ATT&CK project declares the attack technique as T1499.

The vulnerability scanner Nessus provides a plugin with the ID 211850 (Debian dla-3966 : pypy3 - security update), which helps to determine the existence of the flaw in a target environment.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the databases at Tenable (211850) and CERT Bund (WID-SEC-2022-1337). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Affected

  • Debian Linux
  • Amazon Linux 2
  • Red Hat Enterprise Linux
  • SUSE Linux
  • Oracle Linux
  • EMC Avamar
  • IBM Spectrum Protect
  • IBM AIX
  • Open Source Python
  • Red Hat OpenShift
  • SUSE openSUSE
  • RESF Rocky Linux
  • IBM QRadar SIEM
  • Dell NetWorker

Productinfo

Type

Name

Version

License

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.4
VulDB Meta Temp Score: 6.4

VulDB Base Score: 5.3
VulDB Temp Score: 5.3
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CVSSv2info

AVACAuCIA
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VectorComplexityAuthenticationConfidentialityIntegrityAvailability
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Denial of service
CWE: CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Nessus ID: 211850
Nessus Name: Debian dla-3966 : pypy3 - security update

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: no mitigation known
Status: 🔍

0-Day Time: 🔍

Timelineinfo

03/20/2020 🔍
09/10/2022 +903 days 🔍
09/10/2022 +0 days 🔍
12/21/2025 +1198 days 🔍

Sourcesinfo

Advisory: 95778
Status: Confirmed

CVE: CVE-2020-10735 (🔍)
GCVE (CVE): GCVE-0-2020-10735
GCVE (VulDB): GCVE-100-208184
CERT Bund: WID-SEC-2022-1337 - Python: Mehrere Schwachstellen

Entryinfo

Created: 09/10/2022 07:16
Updated: 12/21/2025 20:15
Changes: 09/10/2022 07:16 (40), 10/15/2022 07:28 (11), 11/26/2024 18:30 (16), 11/05/2025 09:40 (2), 12/21/2025 20:15 (7)
Complete: 🔍
Cache ID: 216::103

VulDB is the best source for vulnerability data and more expert information about this specific topic.

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