CVE-2017-18342

Aliases:GHSA-rprw-h62v-c2w7PYSEC-2018-49
Advisory lineage Upstream: 0 Downstream: 7
Modified
Published: 27 Jun 2018, 12:00
Last modified:05 Aug 2024, 21:20

Vulnerability Summary

Overall Risk (default)
high
70/100
CVSS Score
9.8 CRITICAL
v3.1 (nvd)
EPSS Score
4.81% LOW
5% probability +0.34%
KEV
Not listed
Ransomware
No reports
Public exploits
None found
Dark Web
Not detected

Timeline

27 Jun 2018, 12:00
Published
Vulnerability first disclosed
05 Aug 2024, 21:20
Last Modified
Vulnerability information updated

Description

In PyYAML before 5.1, the yaml.load() API could execute arbitrary code if used with untrusted data. The load() function has been deprecated in version 5.1 and the 'UnsafeLoader' has been introduced for backward compatibility with the function.

CVSS Metrics

  • v3.1•CRITICAL•Score: 9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • v2.0•HIGH•Score: 7.5AV:N/AC:L/Au:N/C:P/I:P/A:P

EPSS Trends

Current EPSS score: 4.81%• Percentile: 90%

Techniques & Countermeasures

  • CWE-502•Deserialization of Untrusted Data

    The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.

Affected Systems

  • fedoraproject•fedora

    28 | 29 | 30

  • PyPI•pyyaml

    < 4.1 | < 5.1

  • pyyaml•pyyaml

    < 5.1

References (21)