CVE-2020-8492

Advisory lineage Upstream: 0 Downstream: 38
Modified
Published: 30 Jan 2020, 00:00
Last modified:04 Aug 2024, 10:03

Vulnerability Summary

Overall Risk (default)
medium
39/100
CVSS Score
7.1 HIGH
v2.0 (nvd)
EPSS Score
2.95% LOW
3% probability -0.65%
KEV
Not listed
Ransomware
No reports
Public exploits
1 found
Dark Web
Not detected

Timeline

30 Jan 2020, 00:00
Published
Vulnerability first disclosed
04 Aug 2024, 10:03
Last Modified
Vulnerability information updated

Description

Python 2.7 through 2.7.17, 3.5 through 3.5.9, 3.6 through 3.6.10, 3.7 through 3.7.6, and 3.8 through 3.8.1 allows an HTTP server to conduct Regular Expression Denial of Service (ReDoS) attacks against a client because of urllib.request.AbstractBasicAuthHandler catastrophic backtracking.

CVSS Metrics

  • v3.1•MEDIUM•Score: 6.5CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
  • v2.0•HIGH•Score: 7.1AV:N/AC:M/Au:N/C:N/I:N/A:C

EPSS Trends

Current EPSS score: 2.95%• Percentile: 87%

Techniques & Countermeasures

  • CWE-400•Uncontrolled Resource Consumption

    The product does not properly control the allocation and maintenance of a limited resource.

Affected Systems

  • canonical•ubuntu_linux

    12.04 | 14.04 | 16.04 | 18.04 | 19.10 | 20.04

  • debian•debian_linux

    9.0

  • fedoraproject•fedora

    31 | 32

  • opensuse•leap

    15.1

  • python•python

    ≥ 2.7.0, ≤ 2.7.17 | ≥ 3.5.0, ≤ 3.5.9 | ≥ 3.6.0, ≤ 3.6.10 | ≥ 3.7.0, ≤ 3.7.6 | ≥ 3.8.0, ≤ 3.8.1

References (16)