CVE-2018-1000886 Denial of service in n/a

Medium 5.5 Published 20 Dec 2018 Updated 17 Sep 2024

A crafted input file can trigger endless macro generation in NASM, causing a stack overflow and crashing the assembler.

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Local or same network only
Victim action needed: A user has to click or open something
Fix: Available

What is CVE-2018-1000886?

CVE-2018-1000886 is a medium-severity denial of service vulnerability in Nasm Netwide Assembler, published on 20 Dec 2018. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

nasm version 2.14.01rc5, 2.15 contains a Buffer Overflow vulnerability in asm/stdscan.c:130 that can result in Stack-overflow caused by triggering endless macro generation, crash the program. This attack appear to be exploitable via a crafted nasm input file.

Weakness: CWE-119

Which versions are affected by CVE-2018-1000886?

It affects 1 product.

Products include Nasm Netwide Assembler.

How do I fix CVE-2018-1000886?

Upgrade to a fixed version.

Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.

Is CVE-2018-1000886 being exploited?

There is no known exploitation of CVE-2018-1000886 in the wild and no public exploit code.

All Nasm Netwide Assembler vulnerabilities

Sources

Also known as DEBIAN-CVE-2018-1000886, GHSA-9mxh-2hm2-fvp4, JLSEC-2026-198, UBUNTU-CVE-2018-1000886.