CVE-2022-21700 Information

Description

Micronaut is a JVM-based full stack Java framework designed for building JVM web applications with support for Java Kotlin and the Groovy language. In affected versions sending an invalid Content Type header leads to memory leak in DefaultArgumentConversionContext as this type is erroneously used in static state. Impact Sending an invalid Content Type header leads to memory leak in DefaultArgumentConversionContext as this type is erroneously used in static state. Patches The problem is patched in Micronaut 3.2.7 and above. Workarounds The default content type binder can be replaced in an existing Micronaut application to mitigate the issue: java package example; import java.util.List; import io.micronaut.context.annotation.Replaces; import io.micronaut.core.convert.ConversionService; import io.micronaut.http.MediaType; import io.micronaut.http.bind.DefaultRequestBinderRegistry; import io.micronaut.http.bind.binders.RequestArgumentBinder; import jakarta.inject.Singleton; @Singleton @Replaces(DefaultRequestBinderRegistry.class) class FixedRequestBinderRegistry extends DefaultRequestBinderRegistry public FixedRequestBinderRegistry(ConversionService conversionService List<RequestArgumentBinder> binders) super(conversionService binders); @Override protected void registerDefaultConverters(ConversionService<?> conversionService) super.registerDefaultConverters(conversionService); conversionService.addConverter(CharSequence.class MediaType.class charSequence -> try return MediaType.of(charSequence); catch (IllegalArgumentException e) return null; ); References Commit that introduced the vulnerability https://github.com/micronaut-projects/micronaut-core/commit/b8ec32c311689667c69ae7d9f9c3b3a8abc96fe3 For more information If you have any questions or comments about this advisory: Open an issue in Micronaut Core Email us at info@micronaut.io

CVSS Vector

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

Reference

https://github.com/micronaut-projects/micronaut-core/commit/b8ec32c311689667c69ae7d9f9c3b3a8abc96fe3 https://github.com/micronaut-projects/micronaut-core/security/advisories/GHSA-2457-2263-mm9f

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

LOW

Base Severity

5.3