# CVE-2018-8882: Memory corruption in n/a

> A stack-based buffer under-read in NASM allows attackers to cause denial of service or potentially execute code via crafted input.

- **Severity:** High 7.8 (`CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 20 Mar 2018
- **Updated:** 5 Aug 2024
- **Also known as:** DEBIAN-CVE-2018-8882, GHSA-3pgv-pw29-xppm, UBUNTU-CVE-2018-8882

## What is CVE-2018-8882?

CVE-2018-8882 is a high-severity memory corruption vulnerability in Nasm Netwide Assembler, published on 20 Mar 2018. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Netwide Assembler (NASM) 2.13.02rc2 has a stack-based buffer under-read in the function ieee_shr in asm/float.c via a large shift value.

Weakness: CWE-119 (Improper Restriction of Operations within the Bounds of a Memory Buffer)

## Which versions are affected by CVE-2018-8882?

It affects 1 product.


Products: Nasm Netwide Assembler.

## How do I fix CVE-2018-8882?

Upgrade to a fixed version.

## Is CVE-2018-8882 being exploited?

There is no known exploitation of CVE-2018-8882 in the wild and no public exploit code.

## Other vulnerabilities in Nasm Netwide Assembler

- [CVE-2004-1287](https://insights.sbomify.com/CVE-2004-1287/): Memory corruption in n/a (critical 10.0)
- [CVE-2020-24978](https://insights.sbomify.com/CVE-2020-24978/): Use after free in n/a (critical 9.8)
- [CVE-2008-7177](https://insights.sbomify.com/CVE-2008-7177/): Memory corruption in n/a (critical 9.3)
- [CVE-2023-31722](https://insights.sbomify.com/CVE-2023-31722/): Memory corruption in n/a (high 7.8)
- [CVE-2022-44370](https://insights.sbomify.com/CVE-2022-44370/): Memory corruption in n/a (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-8882 and fix it if it is affected.

What it is: CVE-2018-8882 is a high-severity memory corruption vulnerability in Nasm Netwide Assembler, published on 20 Mar 2018. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2018-8882 in the wild and no public exploit code.

Affected product: Nasm Netwide Assembler. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2018-8882/ (Markdown: https://insights.sbomify.com/CVE-2018-8882/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-8882
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-8882
- OSV: https://osv.dev/vulnerability/CVE-2018-8882

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-8882/
Summaries are generated and may contain mistakes; the official description above is the record.