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Spring Cloud Function Code Injection with a specially crafted SpEL as a routing expression

Critical severity GitHub Reviewed Published Apr 3, 2022 to the GitHub Advisory Database • Updated Jul 14, 2023

Package

maven org.springframework.cloud:spring-cloud-function-context (Maven)

Affected versions

>= 3.2.0, < 3.2.3
< 3.1.7

Patched versions

3.2.3
3.1.7

Description

In Spring Cloud Function versions 3.1.6, 3.2.2 and older unsupported versions, when using routing functionality it is possible for a user to provide a specially crafted SpEL as a routing-expression that may result in remote code execution and access to local resources.

References

Published by the National Vulnerability Database Apr 1, 2022
Published to the GitHub Advisory Database Apr 3, 2022
Reviewed Apr 5, 2022
Last updated Jul 14, 2023

Severity

Critical

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
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

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:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS score

97.490%
(100th percentile)

Weaknesses

CVE ID

CVE-2022-22963

GHSA ID

GHSA-6v73-fgf6-w5j7

Source code

Credits

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