CVE-2012-6612: Solr core Improper Restriction Of XML External Vulnerability

HIGH
Advisory Identifier: GHSA-6cpj-3g83-q2j4
Share
CWE-611
Published
Advisory Summary

CVE-2012-6612 is a HIGH improper restriction of xml external vulnerability (CWE-611: Improper Restriction of XML External Entity Reference) affecting Solr core libraries in the Maven ecosystem. The issue involves improper restriction of xml external entity reference in apache solr. Remediation is available by upgrading affected packages to version 4.1.0.

CVE-2012-6612 at a Glance

CVE Identifier CVE-2012-6612
GHSA Identifier GHSA-6cpj-3g83-q2j4
Severity HIGH
CVSS v3.1 Base Score N/A
CWE Classification CWE-611: Improper Restriction of XML External Entity Reference
Affected Product Solr core
Package Ecosystem Maven
Published Date
Last Updated

How to Fix CVE-2012-6612

To remediate this vulnerability, upgrade all affected Solr 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.

org.apache.solr:solr-core fixed: 4.1.0 
<dependency>
    <groupId>org.apache.solr</groupId>
    <artifactId>solr-core</artifactId>
    <version>4.1.0</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.apache.solr

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2012-6612, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree -Dincludes=org.apache.solr

Analyze the terminal output to locate any version of Solr core in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 4.1.0), your application is affected.

Note: The mvn dependency:tree -Dincludes=org.apache.solr 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 Solr 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

The (1) UpdateRequestHandler for XSLT or (2) XPathEntityProcessor in Apache Solr before 4.1 allows remote attackers to have an unspecified impact via XML data containing an external entity declaration in conjunction with an entity reference, related to an XML External Entity (XXE) issue, different vectors than CVE-2013-6407.

CVE-2012-6612 Affected Solr core Versions

1 component(s)
Fixed Versions:
4.1.0
Product / Package Ecosystem Affected Versions Fixed Version
org.apache.solr:solr-core
maven/org.apache.solr/solr-core
Maven
< 4.1.0
4.1.0

References

NVD — CVE-2012-6612 NVD
https://nvd.nist.gov/vuln/detail/CVE-2012-6612
Security Fix Commit FIX COMMIT
https://github.com/apache/lucene-solr/commit/0d21b900975b7048d2e925d852aeacb9bdc6766c
Security Fix Commit FIX COMMIT
https://github.com/apache/lucene-solr/commit/f230486ce6707762c1a6e81655d0fac52887906d
Solr core Source Repository REPOSITORY
https://github.com/apache/lucene-solr
issues.apache.org/jira/browse/solr-38... WEB
https://issues.apache.org/jira/browse/SOLR-3895
rhn.redhat.com/errata/rhsa-2013-18... WEB
http://rhn.redhat.com/errata/RHSA-2013-1844.html
rhn.redhat.com/errata/rhsa-2014-00... WEB
http://rhn.redhat.com/errata/RHSA-2014-0029.html
svn.apache.org/viewvc/lucene/dev/b... WEB
http://svn.apache.org/viewvc/lucene/dev/branches/branch_4x/solr/CHANGES.txt?view=markup

Frequently Asked Questions

What is CVE-2012-6612?
CVE-2012-6612 is a security vulnerability in Solr core involving Improper Restriction of XML External Entity Reference in Apache Solr under CWE-611: Improper Restriction of XML External Entity Reference.
Which Solr core versions are affected?
Affected versions include releases prior to 4.1.0 across affected packages: org.apache.solr:solr-core.
What version fixes CVE-2012-6612?
Upgrading to 4.1.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is solr-core affected?
Yes, org.apache.solr:solr-core is affected in releases prior to 4.1.0. Upgrade your dependency to 4.1.0 or later.
What CWE is associated with CVE-2012-6612?
CVE-2012-6612 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-2012-6612?
Run the dependency tree command: 'mvn dependency:tree -Dincludes=org.apache.solr'. 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-6cpj-3g83-q2j4",
  "modified" : "2022-07-12T21:32:13Z",
  "published" : "2022-05-17T04:50:16Z",
  "aliases" : [ "CVE-2012-6612" ],
  "summary" : "Improper Restriction of XML External Entity Reference in Apache Solr",
  "details" : "The (1) UpdateRequestHandler for XSLT or (2) XPathEntityProcessor in Apache Solr before 4.1 allows remote attackers to have an unspecified impact via XML data containing an external entity declaration in conjunction with an entity reference, related to an XML External Entity (XXE) issue, different vectors than CVE-2013-6407.",
  "severity" : [ ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "Maven",
      "name" : "org.apache.solr:solr-core"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0"
      }, {
        "fixed" : "4.1.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2012-6612"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apache/lucene-solr/commit/0d21b900975b7048d2e925d852aeacb9bdc6766c"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/apache/lucene-solr/commit/f230486ce6707762c1a6e81655d0fac52887906d"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/apache/lucene-solr"
  }, {
    "type" : "WEB",
    "url" : "https://issues.apache.org/jira/browse/SOLR-3895"
  }, {
    "type" : "WEB",
    "url" : "http://rhn.redhat.com/errata/RHSA-2013-1844.html"
  }, {
    "type" : "WEB",
    "url" : "http://rhn.redhat.com/errata/RHSA-2014-0029.html"
  }, {
    "type" : "WEB",
    "url" : "http://svn.apache.org/viewvc/lucene/dev/branches/branch_4x/solr/CHANGES.txt?view=markup"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-611" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2022-07-12T21:32:13Z",
    "nvd_published_at" : "2013-12-07T21:55:00Z"
  }
}