CVE-2022-36980CWE-367

This vulnerability allows remote attackers to bypass authentication on affected installations of Ivanti Avalanche 6.3.2.3490

Critical · published March 29, 2023

Patch now

High probability of exploitation

CVSS calls it critical at 9.4. It sits in the 99.7th percentile for exploit probability.

CVSS v3.0
9.4
EPSS
82%
Percentile
99.7
In the wild
Unconfirmed
What it is

This vulnerability allows remote attackers to bypass authentication on affected installations of Ivanti Avalanche 6.3.2.3490. Although authentication is required to exploit this vulnerability, the existing authentication mechanism can be bypassed. The specific flaw exists within the EnterpriseServer service. The issue results from the lack of proper locking when performing operations during authentication. An attacker can leverage this vulnerability to bypass authentication on the system. Was ZDI-CAN-15528.

The record
Technical detail
CVSS v3.0
9.4 · CRITICAL
Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:H
CVSS v4.0
Not supplied
EPSS
0.82416 · 99.7th percentile
Weakness
CWE-367 · Time-of-check Time-of-use (TOCTOU) Race Condition
Published
2023-03-29T00:00Z
EPSS history
Timeline
  • 29 MAR 00:00Z
    This vulnerability allows remote attackers to bypass authentication on affected installations of Ivanti Avalanche 6.3.2.3490
    cvelistv5