jsPDF is a library to generate PDFs in JavaScript. Prior to 4.1.0, user control of the first argument of the addMetadata function allows users to inject arbitrary XML. If given the possibility to pass unsanitized input to the addMetadata method, a user can inject arbitrary XMP metadata into the generated PDF. If the generated PDF is signed, stored or otherwise processed after, the integrity of the PDF can no longer be guaranteed. The vulnerability has been fixed in jsPDF@4.1.0.

Affected: npm: jspdf

### Impact

User control of the first argument of the `addMetadata` function allows users to inject arbitrary XML.

If given the possibility to pass unsanitized input to the `addMetadata` method, a user can inject arbitrary XMP metadata into the generated PDF. If the generated PDF is signed, stored or otherwise processed after, the integrity of the PDF can no longer be guaranteed.

Example attack vector:

```js import { jsPDF } from "jspdf"

const doc = new jsPDF()

// Input a string that closes the current XML tag and opens a new one. // We are injecting a fake "dc:creator" (Author) to spoof the document source. const maliciousInput = '</jspdf:metadata></rdf:Description>' + '<rdf:Description xmlns:dc="http://purl.org/dc/elements/1.1/">' + '<dc:creator>TRUSTED_ADMINISTRATOR</dc:creator>' + // <--- Spoofed Identity '</rdf:Description>' + '<rdf:Description><jspdf:metadata>'

// The application innocently adds the user's input to the metadata doc.addMetadata(maliciousInput, "http://valid.namespace")

doc.save("test.pdf") ```

### Patches

The vulnerability has been fixed in jsPDF@4.1.0

### Workarounds

Sanitize user input before passing it to the `addMetadata` method: escape XML entities. For example:

```js let input = "..."

input = input .replace(/&/g, "&amp;") .replace(/</g, "&lt;") .replace(/>/g, "&gt;") .replace(/"/g, "&quot;") .replace(/'/g, "&apos;")

doc.addMetadata(input) ```

Ein Angreifer kann mehrere Schwachstellen in HCL BigFix ausnutzen, um Informationen offenzulegen, um beliebigen Programmcode auszuführen, um einen Denial of Service Angriff durchzuführen, und um Dateien zu manipulieren.