CVE-2016-9015

Aliases:GHSA-v4w5-p2hg-8fh6PYSEC-2017-98
Advisory lineage Upstream: 0 Downstream: 5
Modified
Published: 11 Jan 2017, 16:00
Last modified:06 Aug 2024, 02:35

Vulnerability Summary

Overall Risk (default)
low
15/100
CVSS Score
3.7 LOW
v3.0 (nvd)
EPSS Score
0.04% LOW
0% probability -0.02%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

11 Jan 2017, 16:00
Published
Vulnerability first disclosed
06 Aug 2024, 02:35
Last Modified
Vulnerability information updated

Description

Versions 1.17 and 1.18 of the Python urllib3 library suffer from a vulnerability that can cause them, in certain configurations, to not correctly validate TLS certificates. This places users of the library with those configurations at risk of man-in-the-middle and information leakage attacks. This vulnerability affects users using versions 1.17 and 1.18 of the urllib3 library, who are using the optional PyOpenSSL support for TLS instead of the regular standard library TLS backend, and who are using OpenSSL 1.1.0 via PyOpenSSL. This is an extremely uncommon configuration, so the security impact of this vulnerability is low.

CVSS Metrics

  • v4.0•MEDIUM•Score: 6.3CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
  • v3.0•LOW•Score: 3.7CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
  • v2.0•LOW•Score: 2.6AV:N/AC:H/Au:N/C:P/I:N/A:N

EPSS Trends

Current EPSS score: 0.04%• Percentile: 12%

Techniques & Countermeasures

  • CWE-295•Improper Certificate Validation

    The product does not validate, or incorrectly validates, a certificate.

Affected Systems

  • PyPI•urllib3

    ≥ 1.17, < 1.18.1

  • python•urllib3

    1.17 | 1.18

References (7)