CVE-2020-27678 Memory corruption in n/a

Critical 9.8 Published 23 Oct 2020 Updated 4 Aug 2024

A buffer overflow in the illumos PAM framework allows attackers to execute arbitrary code or escalate privileges.

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-2020-27678?

CVE-2020-27678 is a critical memory corruption vulnerability in n/a, published on 23 Oct 2020. An attacker can exploit it over the internet without logging in, with no action from the victim.

Official description

An issue was discovered in illumos before 2020-10-22, as used in OmniOS before r151030by, r151032ay, and r151034y and SmartOS before 20201022. There is a buffer overflow in parse_user_name in lib/libpam/pam_framework.c.

Weakness: CWE-120

Which versions are affected by CVE-2020-27678?

It affects 3 products.

Products include Illumos Illumos, Joyent Smartos, Omniosce Omnios.

How do I fix CVE-2020-27678?

No fix has been published for CVE-2020-27678 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-2020-27678 being exploited?

There is no known exploitation of CVE-2020-27678 in the wild and no public exploit code.

Sources

Also known as GHSA-q226-j4q4-9wc9.