CVE-2018-5709 Integer overflow in n/a

High 7.5 Published Updated

An integer overflow in MIT Kerberos 5 allows attackers to corrupt database artifacts via crafted dump files, potentially compromising trusted data integrity.

Exploited in the wild
Not known
Login needed
Not needed
Attackable
Over the internet
Victim action needed
Not needed
Fix
Available

What is CVE-2018-5709?

CVE-2018-5709 is a high-severity vulnerability in n/a, published on 16 Jan 2018. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An issue was discovered in MIT Kerberos 5 (aka krb5) through 1.16. There is a variable "dbentry->n_key_data" in kadmin/dbutil/dump.c that can store 16-bit data but unknowingly the developer has assigned a "u4" variable to it, which is for 32-bit data. An attacker can use this vulnerability to affect other artifacts of the database as we know that a Kerberos database dump file contains trusted data.

Weakness: CWE-190

Which versions are affected by CVE-2018-5709?

It affects 1 product.

Products include Mit Kerberos.

How do I fix CVE-2018-5709?

Apply the vendor's patch.

Is CVE-2018-5709 being exploited?

There is no known exploitation of CVE-2018-5709 in the wild and no public exploit code.

Sources

Also known as ALPINE-CVE-2018-5709, CLEANSTART-2024-LS60465, DEBIAN-CVE-2018-5709, GHSA-9g2q-jwhw-j832, ROOT-OS-DEBIAN-12-CVE-2018-5709, UBUNTU-CVE-2018-5709.

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