Vulnerabilities in pkg:maven/org.scala-lang/scala-library

PACKAGE
Advisory Identifier: GHSA-8qv5-68g4-248j
Advisory Summary

CVE-2022-36944 is a CRITICAL (CVSS 9.8) scala subject to file deletion, vulnerability (CWE-502: Deserialization of Untrusted Data) affecting Scala library libraries in the Maven ecosystem. The issue involves scala subject to file deletion, code execution due to java deserialization chain with lazylist object deserialization. Remediation is available by upgrading affected packages to version 2.13.9.

1 Known Advisory Record(s)
Package Vulnerability Intelligence

pkg:maven/org.scala-lang/scala-library

1 Known Advisory Record(s)

Vulnerability advisories affecting package pkg:maven/org.scala-lang/scala-library. Select an advisory below to view technical details or fixes.

Advisory ID CVE / NVD Severity Summary
GHSA-8qv5-68g4-248j CVE-2022-36944 CRITICAL Scala subject to file deletion, code execution due to Java deserialization chain with LazyList object deserialization

CVE-2022-36944 at a Glance

CVE Identifier CVE-2022-36944
GHSA Identifier GHSA-8qv5-68g4-248j
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-502: Deserialization of Untrusted Data
Affected Product Scala library
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 9.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required None (PR:N)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix CVE-2022-36944

To remediate this vulnerability, upgrade all affected Scala library dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

org.scala-lang:scala-library fixed: 2.13.9
<dependency>
    <groupId>org.scala-lang</groupId>
    <artifactId>scala-library</artifactId>
    <version>2.13.9</version>
</dependency>
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release:

mvn dependency:tree -Dincludes=org.scala-lang

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2022-36944, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.scala-lang

Analyze the terminal output to locate any version of Scala library in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 2.13.9), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.scala-lang command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-502: Deserialization of Untrusted Data, where the product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid. In Scala library, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

Scala 2.13.x before 2.13.9 has a Java deserialization chain in its JAR file. On its own, it cannot be exploited. There is only a risk in conjunction with LazyList object deserialization within an application. In such situations, it allows attackers to erase contents of arbitrary files, make network connections, or possibly run arbitrary code (specifically, Function0 functions) via a gadget chain.

CVE-2022-36944 Affected Scala library Versions

1 component(s)
Fixed Versions:
2.13.9
Product / Package Ecosystem Affected Versions Fixed Version
org.scala-lang:scala-library
Maven
≥ 2.13.0
< 2.13.9
2.13.9

References

Frequently Asked Questions

What is CVE-2022-36944?
CVE-2022-36944 is a security vulnerability in Scala library involving Scala subject to file deletion, code execution due to Java deserialization chain with LazyList object deserialization under CWE-502: Deserialization of Untrusted Data.
Which Scala library versions are affected?
Affected versions include releases prior to 2.13.9 across affected packages: org.scala-lang:scala-library.
What version fixes CVE-2022-36944?
Upgrading to 2.13.9 (or the latest patched release for your respective branch) resolves the vulnerability.
Is scala-library affected?
Yes, org.scala-lang:scala-library is affected in releases prior to 2.13.9. Upgrade your dependency to 2.13.9 or later.
What is the CVSS score of CVE-2022-36944?
CVE-2022-36944 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2022-36944?
CVE-2022-36944 is classified under CWE-502: Deserialization of Untrusted Data (The product deserializes untrusted data without sufficiently ensuring that the resulting data will be valid.).
How can I check Maven dependencies for CVE-2022-36944?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.scala-lang'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-8qv5-68g4-248j",
  "modified" : "2022-09-28T14:10:01Z",
  "published" : "2022-09-25T00:00:20Z",
  "aliases" : [ "CVE-2022-36944" ],
  "summary" : "Scala subject to file deletion, code execution due to Java deserialization chain with LazyList object deserialization",
  "details" : "Scala 2.13.x before 2.13.9 has a Java deserialization chain in its JAR file. On its own, it cannot be exploited. There is only a risk in conjunction with LazyList object deserialization within an application. In such situations, it allows attackers to erase contents of arbitrary files, make network connections, or possibly run arbitrary code (specifically, Function0 functions) via a gadget chain.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.scala-lang:scala-library"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "2.13.0"
      }, {
        "fixed" : "2.13.9"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2022-36944"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/scala/scala/pull/10118"
  }, {
    "type" : "WEB",
    "url" : "https://discuss.lightbend.com/t/impact-of-cve-2022-36944-on-akka-cluster-akka-actor-akka-remote/10007/2"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/scala/scala"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/scala/scala-collection-compat/releases/tag/v2.9.0"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/scala/scala/releases/tag/v2.13.9"
  }, {
    "type" : "WEB",
    "url" : "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/6ZOZVWY3X72FZZCCRAKRJYTQOJ6LUD6Z"
  }, {
    "type" : "WEB",
    "url" : "https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/L3WMKPFAMFQE3HJVRQ5KOJUTWG264SXI"
  }, {
    "type" : "WEB",
    "url" : "https://www.scala-lang.org/download"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-502" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-09-28T14:10:01Z",
    "nvd_published_at" : "2022-09-23T18:15:00Z"
  }
}