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Apache Camel's Validation Component is vulnerable against SSRF via remote DTDs and XXE.

High severity GitHub Reviewed Published Oct 16, 2018 to the GitHub Advisory Database • Updated Dec 19, 2023

Package

maven org.apache.camel:camel-core (Maven)

Affected versions

< 2.17.6
>= 2.18.0, < 2.18.2

Patched versions

2.17.6
2.18.2

Description

Description: The Validation Component of Apache Camel evaluates DTD headers of XML stream sources, although a validation against XML schemas (XSD) is executed. Remote attackers can use this feature to make Server-Side Request Forgery (SSRF) attacks by sending XML documents with remote DTDs URLs or XML External Entities (XXE). The vulnerability is not given for SAX or StAX sources.

Mitigation: 2.17.x users should upgrade to 2.17.6, 2.18.x users should upgrade to 2.18.3.

The JIRA tickets https://issues.apache.org/jira/browse/CAMEL-10894 refers to the various commits that resolved the issue, and have more details.

References

Published to the GitHub Advisory Database Oct 16, 2018
Reviewed Jun 16, 2020
Last updated Dec 19, 2023

Severity

High

CVSS overall score

This score calculates overall vulnerability severity from 0 to 10 and is based on the Common Vulnerability Scoring System (CVSS).
/ 10

CVSS v3 base metrics

Attack vector
Network
Attack complexity
Low
Privileges required
None
User interaction
Required
Scope
Changed
Confidentiality
None
Integrity
High
Availability
None

CVSS v3 base metrics

Attack vector: More severe the more the remote (logically and physically) an attacker can be in order to exploit the vulnerability.
Attack complexity: More severe for the least complex attacks.
Privileges required: More severe if no privileges are required.
User interaction: More severe when no user interaction is required.
Scope: More severe when a scope change occurs, e.g. one vulnerable component impacts resources in components beyond its security scope.
Confidentiality: More severe when loss of data confidentiality is highest, measuring the level of data access available to an unauthorized user.
Integrity: More severe when loss of data integrity is the highest, measuring the consequence of data modification possible by an unauthorized user.
Availability: More severe when the loss of impacted component availability is highest.
CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:H/A:N

EPSS score

0.482%
(76th percentile)

Weaknesses

CVE ID

CVE-2017-5643

GHSA ID

GHSA-vq9j-jh62-5hmp

Source code

Credits

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