Описание
jackson-databind's deserializer for java.nio.file.Path resolves an attacker-supplied URI without restricting the URI scheme. In JDKFromStringDeserializer.NioPathHelper.deserialize, a string bound from untrusted JSON is passed to new URI(value) and then to Path.of(uri). When that throws FileSystemNotFoundException, the code enumerates ServiceLoader and calls provider.getPath(uri) on the first provider whose scheme matches the attacker-chosen scheme. Untrusted JSON can therefore select and drive an arbitrary registered FileSystemProvider during readValue under a default JsonMapper, and forces provider class loading at the same time. With only the JDK built-in providers (file, jar/zipfs) present, the resolved path is inert and no mount or network I/O occurs; further impact requires a side-effecting third-party FileSystemProvider on the classpath. This affects com.fasterxml.jackson.core:jackson-databind from 2.8.0 before 2.18.10, from 2.19.0 before 2.21.6, and from 2.22.0 before 2.22.2, and tools.jackson.core:jackson-databind from 3.0.0 before 3.1.6 and from 3.2.0 before 3.2.2. Users should upgrade to 2.18.10, 2.21.6, 2.22.2, 3.1.6, or 3.2.2. Binding java.nio.file.Path from untrusted JSON should be avoided regardless of version.
A flaw was found in jackson-databind. When deserializing java.nio.file.Path from untrusted JSON input, the deserializer resolves an attacker-supplied Uniform Resource Identifier (URI) without restricting the URI scheme. This allows a remote attacker to select and drive an arbitrary registered FileSystemProvider and force provider class loading. While the direct impact with only built-in Java Development Kit (JDK) providers is limited, the presence of a side-effecting third-party FileSystemProvider on the classpath could lead to further unintended consequences, such as resource access or network input/output (I/O).
Отчет
Red Hat's CVSS score matches the upstream rating of Moderate (5.3). While this flaw allows an attacker to influence URI scheme resolution and force FileSystemProvider class loading during deserialization of java.nio.file.Path from untrusted JSON, the real-world impact is conditional: with only the standard JDK providers (file, jar/zipfs) present, the resolved path is inert and no network I/O or filesystem side effects occur. Meaningful exploitation requires a side-effecting third-party FileSystemProvider on the application classpath, which is not typical in production deployments. The availability impact is rated Low due to the possibility of triggering unexpected class loading. Red Hat agrees that the upstream rating accurately represents the risk in most deployment scenarios.
Меры по смягчению последствий
Avoid deserializing java.nio.file.Path from untrusted JSON input. If the application does not use Path deserialization, no remediation is required. Otherwise, upgrade jackson-databind to a fixed version: 2.18.10, 2.21.6, 2.22.2 (com.fasterxml.jackson.core), or 3.1.6 / 3.2.2 (tools.jackson.core). As a workaround, register a custom deserializer for java.nio.file.Path that validates or rejects input before URI resolution, or configure the ObjectMapper to deny Path deserialization entirely.
Затронутые пакеты
| Платформа | Пакет | Состояние | Рекомендация | Релиз |
|---|---|---|---|---|
| Exploit Intelligence | exploit-intelligence/agent-client-rhel9 | Out of support scope | ||
| OpenShift Developer Tools and Services | jenkins | Out of support scope | ||
| OpenShift Developer Tools and Services | jenkins-2-plugins | Out of support scope | ||
| OpenShift Developer Tools and Services | ocp-tools-4/jenkins-rhel8 | Out of support scope | ||
| OpenShift Developer Tools and Services | ocp-tools-4/jenkins-rhel9 | Out of support scope | ||
| OpenShift Serverless | openshift-serverless-1/kn-ekb-dispatcher-rhel9 | Fix deferred | ||
| OpenShift Serverless | openshift-serverless-1/kn-ekb-receiver-rhel9 | Fix deferred | ||
| OpenShift Serverless | openshift-serverless-1/kn-eventing-integrations-aws-ddb-streams-source-rhel9 | Fix deferred | ||
| OpenShift Serverless | openshift-serverless-1/kn-eventing-integrations-aws-s3-sink-rhel9 | Fix deferred | ||
| OpenShift Serverless | openshift-serverless-1/kn-eventing-integrations-aws-s3-source-rhel9 | Fix deferred |
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Дополнительная информация
Статус:
EPSS
5.3 Medium
CVSS3
Связанные уязвимости
jackson-databind's deserializer for java.nio.file.Path resolves an attacker-supplied URI without restricting the URI scheme. In JDKFromStringDeserializer.NioPathHelper.deserialize, a string bound from untrusted JSON is passed to new URI(value) and then to Path.of(uri). When that throws FileSystemNotFoundException, the code enumerates ServiceLoader<FileSystemProvider> and calls provider.getPath(uri) on the first provider whose scheme matches the attacker-chosen scheme. Untrusted JSON can therefore select and drive an arbitrary registered FileSystemProvider during readValue under a default JsonMapper, and forces provider class loading at the same time. With only the JDK built-in providers (file, jar/zipfs) present, the resolved path is inert and no mount or network I/O occurs; further impact requires a side-effecting third-party FileSystemProvider on the classpath. This affects com.fasterxml.jackson.core:jackson-databind from 2.8.0 before 2.18.10, from 2.19.0 before 2.21.6, and from 2...
jackson-databind's deserializer for java.nio.file.Path resolves an attacker-supplied URI without restricting the URI scheme. In JDKFromStringDeserializer.NioPathHelper.deserialize, a string bound from untrusted JSON is passed to new URI(value) and then to Path.of(uri). When that throws FileSystemNotFoundException, the code enumerates ServiceLoader<FileSystemProvider> and calls provider.getPath(uri) on the first provider whose scheme matches the attacker-chosen scheme. Untrusted JSON can therefore select and drive an arbitrary registered FileSystemProvider during readValue under a default JsonMapper, and forces provider class loading at the same time. With only the JDK built-in providers (file, jar/zipfs) present, the resolved path is inert and no mount or network I/O occurs; further impact requires a side-effecting third-party FileSystemProvider on the classpath. This affects com.fasterxml.jackson.core:jackson-databind from 2.8.0 before 2.18.10, from 2.19.0 before 2.21.6, and from 2.22
jackson-databind's deserializer for java.nio.file.Path resolves an att ...
EPSS
5.3 Medium
CVSS3