CVE-2023-22308 Integer overflow in SoftEther VPN

High 7.5 Published 12 Oct 2023 Updated 2 Aug 2024

An attacker can cause a denial of service in SoftEther VPN by sending a specially crafted network packet that triggers an integer underflow.

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-2023-22308?

CVE-2023-22308 is a high-severity vulnerability in SoftEther VPN, published on 12 Oct 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An integer underflow vulnerability exists in the vpnserver OvsProcessData functionality of SoftEther VPN 5.01.9674 and 5.02. A specially crafted network packet can lead to denial of service. An attacker can send a malicious packet to trigger this vulnerability.

Weakness: CWE-191

Which versions are affected by CVE-2023-22308?

It affects 1 product.

Products include Softether Vpn.

How do I fix CVE-2023-22308?

No fix has been published for CVE-2023-22308 yet. Limit exposure of the affected software until one is available.

Is CVE-2023-22308 being exploited?

There is no known exploitation of CVE-2023-22308 in the wild and no public exploit code.

Sources

Also known as GHSA-8x86-h5jc-fg6v.