CVE-2017-18342

CVSS V2 High 7.5 CVSS V3 Critical 9.8
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.
Overview
  • CVE ID
  • CVE-2017-18342
  • Assigner
  • cve@mitre.org
  • Vulnerability Status
  • Analyzed
  • Published Version
  • 2018-06-27T12:29:00
  • Last Modified Date
  • 2020-10-14T13:23:00
Weakness Enumerations
CWE URL
CWE-502 http://cwe.mitre.org/data/definitions/502.html
CPE Configuration (Product)
CPE Vulnerable Operator Version Start Version End
cpe:2.3:a:pyyaml:pyyaml:*:*:*:*:*:*:*:* 1 OR 5.1
cpe:2.3:o:fedoraproject:fedora:28:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:fedoraproject:fedora:29:*:*:*:*:*:*:* 1 OR
cpe:2.3:o:fedoraproject:fedora:30:*:*:*:*:*:*:* 1 OR
CVSS Version 2
  • Version
  • 2.0
  • Vector String
  • AV:N/AC:L/Au:N/C:P/I:P/A:P
  • Access Vector
  • NETWORK
  • Access Compatibility
  • LOW
  • Authentication
  • NONE
  • Confidentiality Impact
  • PARTIAL
  • Integrity Impact
  • PARTIAL
  • Availability Impact
  • PARTIAL
  • Base Score
  • 7.5
  • Severity
  • HIGH
  • Exploitability Score
  • 10
  • Impact Score
  • 6.4
CVSS Version 3
  • Version
  • 3.1
  • Vector String
  • CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  • Attack Vector
  • NETWORK
  • Attack Compatibility
  • LOW
  • Privileges Required
  • NONE
  • User Interaction
  • NONE
  • Scope
  • UNCHANGED
  • Confidentiality Impact
  • HIGH
  • Availability Impact
  • HIGH
  • Base Score
  • 9.8
  • Base Severity
  • CRITICAL
  • Exploitability Score
  • 3.9
  • Impact Score
  • 5.9
References
Reference URL Reference Tags
https://github.com/yaml/pyyaml/pull/74 Patch Third Party Advisory
https://github.com/yaml/pyyaml/blob/master/CHANGES Release Notes Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/M6JCFGEIEOFMWWIXGHSELMKQDD4CV2BA/ Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/KSQQMRUQSXBSUXLCRD3TSZYQ7SEZRKCE/ Third Party Advisory
https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/JEX7IPV5P2QJITAMA5Z63GQCZA5I6NVZ/ Third Party Advisory
https://github.com/yaml/pyyaml/wiki/PyYAML-yaml.load(input)-Deprecation Third Party Advisory
https://github.com/marshmallow-code/apispec/issues/278 Third Party Advisory
https://github.com/yaml/pyyaml/issues/193 Third Party Advisory
https://security.gentoo.org/glsa/202003-45 Third Party Advisory
Sources
Source Name Source URL
NIST https://nvd.nist.gov/vuln/detail/CVE-2017-18342
MITRE https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-18342
History
Created Old Value New Value Data Type Notes
2022-05-10 17:08:54 Added to TrackCVE
2022-12-03 08:45:34 2018-06-27T12:29Z 2018-06-27T12:29:00 CVE Published Date updated
2022-12-03 08:45:34 2020-10-14T13:23:00 CVE Modified Date updated
2022-12-03 08:45:34 Analyzed Vulnerability Status updated