CVE-2023-45146: Xxl rpc core XXL-RPC Deserialization Of Untrusted Data Vulnerability

CRITICAL
Advisory Identifier: GHSA-f984-3wx8-grp9
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CVSS 9.0
CWE-502
Published
Advisory Summary

CVE-2023-45146 is a CRITICAL (CVSS 9.0) xxl-rpc deserialization of untrusted data vulnerability (CWE-502: Deserialization of Untrusted Data) affecting Xxl rpc core libraries in the Maven ecosystem. The issue involves xxl-rpc deserialization of untrusted data vulnerability. Remediation is available in the latest vendor maintenance releases.

CVE-2023-45146 at a Glance

CVE Identifier CVE-2023-45146
GHSA Identifier GHSA-f984-3wx8-grp9
Severity CRITICAL
CVSS v3.1 Base Score 9.0
CWE Classification CWE-502: Deserialization of Untrusted Data
Affected Product Xxl rpc core
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 9.0

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

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

How to Fix CVE-2023-45146

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

com.xuxueli:xxl-rpc-core fixed: Latest secure release 
<dependency>
    <groupId>com.xuxueli</groupId>
    <artifactId>xxl-rpc-core</artifactId>
    <version>Latest secure release</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=com.xuxueli

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2023-45146, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=com.xuxueli

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

Note: The mvn dependency:tree -Dincludes=com.xuxueli 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 Xxl rpc core, 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

XXL-RPC is a high performance, distributed RPC framework. With it, a TCP server can be set up using the Netty framework and the Hessian serialization mechanism. When such a configuration is used, attackers may be able to connect to the server and provide malicious serialized objects that, once deserialized, force it to execute arbitrary code. This can be abused to take control of the machine the server is running by way of remote code execution. This issue has not been fixed.

CVE-2023-45146 Affected Xxl rpc core Versions

1 component(s)
Product / Package Ecosystem Affected Versions Fixed Version
com.xuxueli:xxl-rpc-core
maven/com.xuxueli/xxl-rpc-core
Maven
≤ 1.7.0

References

NVD — CVE-2023-45146 NVD
https://nvd.nist.gov/vuln/detail/CVE-2023-45146
Xxl rpc core Source Repository REPOSITORY
https://github.com/xuxueli/xxl-rpc
Xxl rpc core Source Repository REPOSITORY
https://github.com/xuxueli/xxl-rpc/blob/eeaa1bd7fc8f2249de13f971dda4f6689d66f318/xxl-rpc-core/src/main/java/com/xxl/rpc/core/serialize/impl/HessianSerializer.java#L45
GitHub Advisory / Wiki ADVISORY
https://securitylab.github.com/advisories/GHSL-2023-052_XXL-RPC

Frequently Asked Questions

What is CVE-2023-45146?
CVE-2023-45146 is a security vulnerability in Xxl rpc core involving XXL-RPC Deserialization of Untrusted Data vulnerability under CWE-502: Deserialization of Untrusted Data.
Which Xxl rpc core versions are affected?
Affected versions include releases prior to current release patches across affected packages: com.xuxueli:xxl-rpc-core.
What version fixes CVE-2023-45146?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
Is xxl-rpc-core affected?
Yes, com.xuxueli:xxl-rpc-core is affected in releases prior to Latest secure release. Upgrade your dependency to Latest secure release or later.
What is the CVSS score of CVE-2023-45146?
CVE-2023-45146 has a CVSS v3.1 base score of 9.0 (CRITICAL) with vector string CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H.
What CWE is associated with CVE-2023-45146?
CVE-2023-45146 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-2023-45146?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=com.xuxueli'. 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
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-f984-3wx8-grp9",
  "modified" : "2024-08-05T21:29:22Z",
  "published" : "2024-08-05T21:29:22Z",
  "aliases" : [ "CVE-2023-45146" ],
  "summary" : "XXL-RPC Deserialization of Untrusted Data vulnerability",
  "details" : "XXL-RPC is a high performance, distributed RPC framework. With it, a TCP server can be set up using the Netty framework and the Hessian serialization mechanism. When such a configuration is used, attackers may be able to connect to the server and provide malicious serialized objects that, once deserialized, force it to execute arbitrary code. This can be abused to take control of the machine the server is running by way of remote code execution. This issue has not been fixed.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H"
  }, {
    "type" : "CVSS_V4",
    "score" : "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "com.xuxueli:xxl-rpc-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "last_affected" : "1.7.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2023-45146"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/xuxueli/xxl-rpc"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/xuxueli/xxl-rpc/blob/eeaa1bd7fc8f2249de13f971dda4f6689d66f318/xxl-rpc-core/src/main/java/com/xxl/rpc/core/serialize/impl/HessianSerializer.java#L45"
  }, {
    "type" : "ADVISORY",
    "url" : "https://securitylab.github.com/advisories/GHSL-2023-052_XXL-RPC"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-502" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-08-05T21:29:22Z",
    "nvd_published_at" : "2023-10-18T22:15:09Z"
  }
}