CVE-2023-28126 Auth bypass in Avalanche

Medium 5.9 Published Updated

Attackers can bypass authentication in Avalanche servers via race conditions or SetUser exploitation, gaining unauthorized access.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
None listed

What is CVE-2023-28126?

CVE-2023-28126 is a medium-severity authentication bypass vulnerability in Ivanti Avalanche, published on 9 May 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An authentication bypass vulnerability exists in Avalanche versions 6.3.x and below that could allow an attacker to gain access by exploiting the SetUser method or can exploit the Race Condition in the authentication message.

Weakness: CWE-362, CWE-305

Which versions are affected by CVE-2023-28126?

It affects 1 product.

Products include Ivanti Avalanche.

How do I fix CVE-2023-28126?

No fix has been published for CVE-2023-28126 yet. Limit exposure of the affected software until one is available.

Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.

Is CVE-2023-28126 being exploited?

There is no known exploitation of CVE-2023-28126 in the wild and no public exploit code.

All Ivanti Avalanche vulnerabilities

Sources

Also known as GHSA-9mhq-xcrq-xc75.

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