CVE-2018-6873

The Auth0 authentication service before 2017-10-15 allows privilege escalation because the JWT audience is not validated

published April 4, 2018

CVSS
โ€”
EPSS
2%
Percentile
82.3
In the wild
Unconfirmed
What it is

โš ๏ธ A missing validation check on JWT audiences is the crack in a fortress wall. Without it, attackers could sneak in and escalate privileges like a guest finding a hidden stairway to the penthouse! ๐Ÿ”‘ Picture a hotel where guests can access any floor simply by pressing random buttons on the elevator. This vulnerability allows unauthorized users to elevate their privileges without any scrutiny, bypassing the secure checks meant to keep them confined to their own level. The potential consequences are unsettling. An attacker could exploit this gap to gain unauthorized access to sensitive areas of the system, potentially leading to unauthorized data exposure or control over resources. Imagine an intruder accessing confidential administrative functions, wreaking havoc with just a few clever clicks!

Put simply

Picture a hotel where guests can access any floor simply by pressing random buttons on the elevator. This vulnerability allows unauthorized users to elevate their privileges without any scrutiny, bypassing the secure checks meant to keep them confined to their own level. This vulnerability arises from the Auth0 authentication service failing to validate the audience claim in JWTs, which can allow an attacker to leverage this oversight for privilege escalation.

What to do

The potential consequences are unsettling. An attacker could exploit this gap to gain unauthorized access to sensitive areas of the system, potentially leading to unauthorized data exposure or control over resources. Imagine an intruder accessing confidential administrative functions, wreaking havoc with just a few clever clicks! To secure your application, update to a version of Auth0 released after October 15, 2017, where this issue is patched. Additionally, ensure that proper audience validation is implemented in your JWT handling practices. Regular auditing of authentication mechanisms is a wise move! You've got this! With these steps, your application will be fortified against sneaky privilege escalations! ๐Ÿ›ก๏ธ

The record
Technical detail
CVSS
Not scored
CVSS v4.0
Not supplied
EPSS
0.02210 ยท 82.3th percentile
Published
2018-04-04T17:00Z
EPSS history
Timeline
  • 04 APR 17:00Z
    The Auth0 authentication service before 2017-10-15 allows privilege escalation because the JWT audience is not validated
    cvelistv5