Vulnerabilities
Misconfiguration
Runtime Security
Compliance
CVE Vulnerabilities

CVE-2017-18640

Improper Restriction of Recursive Entity References in DTDs ('XML Entity Expansion')

Published: Dec 12, 2019 | Modified: Nov 07, 2023
CVSS 3.x
7.5
HIGH
Source:
NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
CVSS 2.x
5 MEDIUM
AV:N/AC:L/Au:N/C:N/I:N/A:P
RedHat/V2
RedHat/V3
7.6 MODERATE
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H
Ubuntu
MEDIUM
Additional information
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2017-18640
CWEhttps://cwe.mitre.org/data/definitions/776.html

The Alias feature in SnakeYAML before 1.26 allows entity expansion during a load operation, a related issue to CVE-2003-1564.

Weakness

The product uses XML documents and allows their structure to be defined with a Document Type Definition (DTD), but it does not properly control the number of recursive definitions of entities.

Affected Software

Name Vendor Start Version End Version
Snakeyaml Snakeyaml_project * 1.26 (excluding)
Red Hat AMQ Streams 1.8.0 RedHat prometheus-jmx-exporter *
Red Hat build of Quarkus 1.3.4 RedHat snakeyaml *
Red Hat Enterprise Linux 8 RedHat prometheus-jmx-exporter-0:0.12.0-6.el8 *
Red Hat Fuse 7.9 RedHat prometheus-jmx-exporter *
Snakeyaml Ubuntu bionic *
Snakeyaml Ubuntu disco *
Snakeyaml Ubuntu eoan *
Snakeyaml Ubuntu groovy *
Snakeyaml Ubuntu hirsute *
Snakeyaml Ubuntu impish *
Snakeyaml Ubuntu kinetic *
Snakeyaml Ubuntu lunar *
Snakeyaml Ubuntu mantic *
Snakeyaml Ubuntu trusty *
Snakeyaml Ubuntu xenial *

Potential Mitigations

References

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