CVE-2018-0683 Memory corruption in Denbun by NEOJAPAN Inc. (Denbun POP version V3.3P R4.0 and earlier, Denbun IMAP version V3.3I R4.0 and earlier)

Critical 9.8 Published 15 Nov 2018 Updated 5 Aug 2024

Remote attackers can execute arbitrary code or cause denial of service via buffer overflow in Denbun mail server software.

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-2018-0683?

CVE-2018-0683 is a critical memory corruption vulnerability in Denbun by NEOJAPAN Inc. (Denbun POP version V3.3P R4.0 and earlier, Denbun IMAP version V3.3I R4.0 and earlier), published on 15 Nov 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

Buffer overflow in Denbun by NEOJAPAN Inc. (Denbun POP version V3.3P R4.0 and earlier, Denbun IMAP version V3.3I R4.0 and earlier) allows remote attackers to execute arbitrary code or cause a denial-of-service (DoS) condition via Cookie data.

Weakness: CWE-119

Which versions are affected by CVE-2018-0683?

It affects 2 products.

Products include Neo Debun Imap, Neo Debun Pop.

How do I fix CVE-2018-0683?

No fix has been published for CVE-2018-0683 yet. Limit exposure of the affected software until one is available.

Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.

Is CVE-2018-0683 being exploited?

There is no known exploitation of CVE-2018-0683 in the wild and no public exploit code.

Sources

Also known as GHSA-6r9h-4q37-4f2p.