CVE-2019-5312: Weixin java common XML External Entity Reference Vulnerability

CRITICAL
Advisory Identifier: GHSA-h755-h99p-9ffv
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CVSS 9.8
CWE-611
Published
Advisory Summary

CVE-2019-5312 is a CRITICAL (CVSS 9.8) xml external entity reference vulnerability (CWE-611: Improper Restriction of XML External Entity Reference) affecting Weixin java common libraries in the Maven ecosystem. The issue involves xml external entity reference in weixin-java-tools. Remediation is available by upgrading affected packages to version 3.3.2.B.

CVE-2019-5312 at a Glance

CVE Identifier CVE-2019-5312
GHSA Identifier GHSA-h755-h99p-9ffv
Severity CRITICAL
CVSS v3.1 Base Score 9.8
CWE Classification CWE-611: Improper Restriction of XML External Entity Reference
Affected Product Weixin java common
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:3.0/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-2019-5312

To remediate this vulnerability, upgrade all affected Weixin java common 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.github.binarywang:weixin-java-common fixed: 3.3.2.B 
<dependency>
    <groupId>com.github.binarywang</groupId>
    <artifactId>weixin-java-common</artifactId>
    <version>3.3.2.B</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.github.binarywang

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2019-5312, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=com.github.binarywang

Analyze the terminal output to locate any version of Weixin java common in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 3.3.2.B), your application is affected.

Note: The mvn dependency:tree -Dincludes=com.github.binarywang 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-611: Improper Restriction of XML External Entity Reference, where the product processes an xml document that can contain xml entities with uris that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output. In Weixin java common, 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

An issue was discovered in weixin-java-tools. There is an XXE vulnerability in the getXmlDoc method of the BaseWxPayResult.java file. NOTE: this issue exists because of an incomplete fix for CVE-2018-20318.

CVE-2019-5312 Affected Weixin java common Versions

1 component(s)
Fixed Versions:
3.3.2.B
Product / Package Ecosystem Affected Versions Fixed Version
com.github.binarywang:weixin-java-common
maven/com.github.binarywang/weixin-java-common
Maven
< 3.3.2.B
3.3.2.B

References

NVD — CVE-2019-5312 NVD
https://nvd.nist.gov/vuln/detail/CVE-2019-5312
Weixin java common Source Repository REPOSITORY
https://github.com/Wechat-Group/WxJava/issues/903
Weixin java common Source Repository REPOSITORY
https://github.com/Wechat-Group/WxJava/issues/903#issuecomment-453747039
Security Fix Commit FIX COMMIT
https://github.com/Wechat-Group/WxJava/commit/8ec61d1328f50e23cd14285a950ca57a088b32b2

Frequently Asked Questions

What is CVE-2019-5312?
CVE-2019-5312 is a security vulnerability in Weixin java common involving XML External Entity Reference in weixin-java-tools under CWE-611: Improper Restriction of XML External Entity Reference.
Which Weixin java common versions are affected?
Affected versions include releases prior to 3.3.2.B across affected packages: com.github.binarywang:weixin-java-common.
What version fixes CVE-2019-5312?
Upgrading to 3.3.2.B (or the latest patched release for your respective branch) resolves the vulnerability.
Is weixin-java-common affected?
Yes, com.github.binarywang:weixin-java-common is affected in releases prior to 3.3.2.B. Upgrade your dependency to 3.3.2.B or later.
What is the CVSS score of CVE-2019-5312?
CVE-2019-5312 has a CVSS v3.1 base score of 9.8 (CRITICAL) with vector string CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with CVE-2019-5312?
CVE-2019-5312 is classified under CWE-611: Improper Restriction of XML External Entity Reference (The product processes an XML document that can contain XML entities with URIs that resolve to documents outside of the intended sphere of control, causing the product to embed incorrect documents into its output.).
How can I check Maven dependencies for CVE-2019-5312?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=com.github.binarywang'. 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-h755-h99p-9ffv",
  "modified" : "2024-01-08T20:11:00Z",
  "published" : "2022-05-14T01:40:24Z",
  "aliases" : [ "CVE-2019-5312" ],
  "summary" : "XML External Entity Reference in weixin-java-tools",
  "details" : "An issue was discovered in weixin-java-tools. There is an XXE vulnerability in the getXmlDoc method of the BaseWxPayResult.java file. NOTE: this issue exists because of an incomplete fix for CVE-2018-20318.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "com.github.binarywang:weixin-java-common"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "3.3.2.B"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2019-5312"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/Wechat-Group/WxJava/issues/903"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/Wechat-Group/WxJava/issues/903#issuecomment-453747039"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/Wechat-Group/WxJava/commit/8ec61d1328f50e23cd14285a950ca57a088b32b2"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-611" ],
    "severity" : "CRITICAL",
    "github_reviewed" : true,
    "github_reviewed_at" : "2024-01-08T20:11:00Z",
    "nvd_published_at" : "2019-01-04T16:29:00Z"
  }
}