Back to Database
Status published
Critical
CVE-2017-18342
In PyYAML before 5.1, the yaml.load() API could execute arbitrary...
Vulnerability 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.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
THREAT MONITOR
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2017-18342
Credits & Attribution
No credits recorded in the NVD database.
References
- https://github.com/yaml/pyyaml/pull/74
- https://github.com/yaml/pyyaml/blob/master/CHANGES
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/M6JCFGEIEOFMWWIXGHSELMKQDD4CV2BA/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/KSQQMRUQSXBSUXLCRD3TSZYQ7SEZRKCE/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JEX7IPV5P2QJITAMA5Z63GQCZA5I6NVZ/
- https://github.com/marshmallow-code/apispec/issues/278
- https://github.com/yaml/pyyaml/issues/193
- https://github.com/yaml/pyyaml/wiki/PyYAML-yaml.load%28input%29-Deprecation
- https://security.gentoo.org/glsa/202003-45
More from pyyaml
View All →CVE-2019-20477
PyYAML 5.1 through 5.1.2 has insufficient restrictions on the load...
Critical
9.8
CVE-2014-9130
scanner.c in LibYAML 0.1.5 and 0.1.6, as used in the...
Medium
5
CVE-2014-2525
Heap-based buffer overflow in the yaml_parser_scan_uri_escapes function in LibYAML before...
Medium
6.8
CVE-2013-6393
The yaml_parser_scan_tag_uri function in scanner.c in LibYAML before 0.1.5 performs...
Medium
6.8
Affected Vendor
pyyaml
View all reports →Affected Software
pyyaml, fedora
Vulnerable Versions:
0, 28, 29, 30
Timeline
Official Publish:
June 27th, 2018
Last Modified:
August 5th, 2024
Added to House:
July 20th, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.