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Scala 2.13 releases before 2.13.9 include a Java deserialization gadget chain in the Scala JAR. The chain is not independently exploitable; exploitation depends on an application deserializing attacker-controlled Java serialized objects while the vulnerable Scala library is available. In that context, the gadget chain can invoke Scala Function0 functions and can be used to erase arbitrary file contents, initiate network connections, or potentially achieve arbitrary code execution.
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1 valid exploit after Mallory filtered fakes, detection scripts, and README-only repos.
This repository is a proof-of-concept exploit for CVE-2022-36944, a Java deserialization vulnerability affecting org.scala-lang:scala-library versions 2.13.x before 2.13.9. The exploit leverages a gadget chain involving Scala's LazyList class to generate a serialized payload that, when deserialized by a vulnerable application, can truncate (zero out) arbitrary files on the victim's machine. The repository is structured as a Maven Java project, with main exploit logic in 'src/main/java/poc/cve/lazylist/payload/Main.java' and supporting classes for payload generation and reflection utilities. The exploit is not weaponized but demonstrates the vulnerability's impact and provides utilities to generate and test payloads. The README provides detailed build and usage instructions, including how to generate payloads and test them against a sample victim class. The attack vector is Java deserialization, and the main fingerprintable endpoints are file paths specified by the attacker for truncation.
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3 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
A Scala deserialization gadget-chain vulnerability addressed in the Red Hat AMQ Streams 2.4.0 security update.
A deserialization gadget-chain vulnerability in Scala.
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Cross-references every affected SKU, including bundled OEM variants.
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