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Posted to issues@avro.apache.org by "Ismaël Mejía (Jira)" <ji...@apache.org> on 2026/07/13 09:35:00 UTC
[jira] [Updated] (AVRO-4247) [java] Avro compression codecs should verify decompression size
[ https://issues.apache.org/jira/browse/AVRO-4247?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Ismaël Mejía updated AVRO-4247:
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Summary: [java] Avro compression codecs should verify decompression size (was: Avro compression codecs should verify decompression size)
> [java] Avro compression codecs should verify decompression size
> ---------------------------------------------------------------
>
> Key: AVRO-4247
> URL: https://issues.apache.org/jira/browse/AVRO-4247
> Project: Apache Avro
> Issue Type: Sub-task
> Components: java
> Affects Versions: 1.12.1
> Reporter: Ismaël Mejía
> Assignee: Steve Loughran
> Priority: Blocker
> Labels: pull-request-available
> Fix For: 1.13.0, 1.12.2
>
> Time Spent: 5h 50m
> Remaining Estimate: 0h
>
> {color:#1f2328}All Avro Java compression codecs (Deflate, Zstandard, XZ, BZip2, Snappy) decompress data without any size limit, allowing an attacker to craft a small Avro file (~50KB) that expands to an extremely large size (~50MB+), causing {color}{{OutOfMemoryError}}{color:#1f2328} and crashing the JVM.{color}
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