CVE-2022-36974CWE-502

This vulnerability allows remote attackers to execute arbitrary code 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 9.8. It sits in the 99.7th percentile for exploit probability.

CVSS v3.0
9.8
EPSS
84%
Percentile
99.7
In the wild
Unconfirmed
What it is

🚨 Authentication might not save you! A sneaky flaw in Ivanti Avalanche 6.3.2.3490 lets attackers bypass authentication and gain remote code execution. 🔥 Think of the Web File Server service like a restaurant kitchen that lets in anyone with a reservation, but doesn’t check the ID of the person who shows up. If a crafty intruder can slip in with a fake ID, they could start cooking up some trouble! An attacker could waltz right into your system and execute arbitrary code with the service account's privileges, which is absolutely devastating. This means they could manipulate the service, access sensitive data, or even bring operations to a halt. It's a recipe for chaos!

Put simply

Think of the Web File Server service like a restaurant kitchen that lets in anyone with a reservation, but doesn’t check the ID of the person who shows up. If a crafty intruder can slip in with a fake ID, they could start cooking up some trouble! This vulnerability arises from improper validation of user-supplied data within the Web File Server service, allowing untrusted data to be deserialized, leading to remote code execution despite the requirement for authentication.

What to do

An attacker could waltz right into your system and execute arbitrary code with the service account's privileges, which is absolutely devastating. This means they could manipulate the service, access sensitive data, or even bring operations to a halt. It's a recipe for chaos! Immediately patch your installations to version 6.3.2.3491 to address this vulnerability. Additionally, review your authentication mechanisms and ensure they are robust enough to prevent bypassing. Conduct a security audit to monitor for any suspicious activity. You've got this! With these steps, your system will be fortified against this critical threat. 🛡️

The record
Technical detail
CVSS v3.0
9.8 · CRITICAL
Vector
CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.84454 · 99.7th percentile
Weakness
CWE-502 · Deserialization of Untrusted Data
Published
2023-03-29T00:00Z
EPSS history
Timeline
  • 29 MAR 00:00Z
    This vulnerability allows remote attackers to execute arbitrary code on affected installations of Ivanti Avalanche 6.3.2.3490
    cvelistv5