CVE-2024-48949

The verify function in lib/elliptic/eddsa/index.js in the Elliptic package before 6.5.6 for Node.js omits "sig.S().gte(sig.eddsa.curve.n) || sig.S().isNeg()"…

Critical · published October 10, 2024

CVSS v3.1
9.1
EPSS
0%
Percentile
41.7
In the wild
Unconfirmed
What it is

🚨 A critical slip in the Elliptic package could let attackers forge signatures like a magician pulling bunnies from hats — no one notices until it's too late! 🔥 Think of it as a bank allowing transactions without double-checking if the account actually has enough funds. Without proper validation, it opens the door for fraudulent withdrawals, risking everyone’s savings. An attacker could exploit this vulnerability to create and validate fake cryptographic signatures, undermining the integrity of secure communications. Imagine a scenario where crucial data is altered or even stolen before anyone realizes what's happened — absolutely devastating!

Put simply

Think of it as a bank allowing transactions without double-checking if the account actually has enough funds. Without proper validation, it opens the door for fraudulent withdrawals, risking everyone’s savings. The issue arises because the verify function in lib/elliptic does not correctly validate signature values, failing to check if the signature value S is either too large or negative, thereby permitting potential forgery.

What to do

An attacker could exploit this vulnerability to create and validate fake cryptographic signatures, undermining the integrity of secure communications. Imagine a scenario where crucial data is altered or even stolen before anyone realizes what's happened — absolutely devastating! Update the Elliptic package to version 6.5.6 or later immediately to close this security hole. Additionally, review your cryptographic implementations to ensure that proper validations are in place. Don’t wait — secure your applications now! You've got this! Follow these steps and your code will be locked down tighter than a vault! 🛡️

The record
Technical detail
CVSS v3.1
9.1 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CVSS v4.0
Not supplied
EPSS
0.00496 · 41.7th percentile
Published
2024-10-10T00:00Z
EPSS history
Timeline
  • 10 OCT 00:00Z
    The verify function in lib/elliptic/eddsa/index.js in the Elliptic package before 6.5.6 for Node.js omits "sig.S().gte(sig.eddsa.curve.n) || sig.S().isNeg()"…
    cvelistv5