# CVE-2018-11237: Memory corruption in n/a

> A buffer overflow in glibc's mempcpy function allows attackers to execute arbitrary code or cause denial of service via crafted inputs.

- **Severity:** High 7.8 (`CVSS:3.1/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:** 18 May 2018
- **Updated:** 5 Aug 2024
- **Also known as:** DEBIAN-CVE-2018-11237, GHSA-fh43-5v3x-c3vr, UBUNTU-CVE-2018-11237

## What is CVE-2018-11237?

CVE-2018-11237 is a high-severity memory corruption vulnerability in Canonical Ubuntu Linux, published on 18 May 2018. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

An AVX-512-optimized implementation of the mempcpy function in the GNU C Library (aka glibc or libc6) 2.27 and earlier may write data beyond the target buffer, leading to a buffer overflow in __mempcpy_avx512_no_vzeroupper.

Weakness: CWE-787 (Out-of-bounds Write)

## Which versions are affected by CVE-2018-11237?

It affects 10 products.


Products: Canonical Ubuntu Linux, Gnu Glibc, Netapp Data Ontap Edge, Netapp Element Software Management, Oracle Communications Session Border Controller, Oracle Enterprise Communications Broker, Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Server, Redhat Enterprise Linux Workstation, Redhat Virtualization Host.

## How do I fix CVE-2018-11237?

Upgrade to a fixed version.

## Is CVE-2018-11237 being exploited?

There is no known exploitation of CVE-2018-11237 in the wild and no public exploit code.

## Other vulnerabilities in Canonical Ubuntu Linux

- [CVE-2020-11651](https://insights.sbomify.com/CVE-2020-11651/): SaltStack Salt Authentication Bypass (critical 9.8, exploited in the wild)
- [CVE-2020-7247](https://insights.sbomify.com/CVE-2020-7247/): OpenSMTPD Remote Code Execution (critical 9.8, exploited in the wild)
- [CVE-2019-16928](https://insights.sbomify.com/CVE-2019-16928/): Exim Out-of-bounds Write (critical 9.8, exploited in the wild)
- [CVE-2018-6789](https://insights.sbomify.com/CVE-2018-6789/): Exim Buffer Overflow (critical 9.8, exploited in the wild)
- [CVE-2015-2590](https://insights.sbomify.com/CVE-2015-2590/): Oracle Java SE and Java SE Embedded Remote Code Execution (critical 9.8, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-11237 and fix it if it is affected.

What it is: CVE-2018-11237 is a high-severity memory corruption vulnerability in Canonical Ubuntu Linux, published on 18 May 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-2018-11237 in the wild and no public exploit code.

Affected product: Canonical Ubuntu Linux. 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-2018-11237/ (Markdown: https://insights.sbomify.com/CVE-2018-11237/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-11237
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-11237
- OSV: https://osv.dev/vulnerability/CVE-2018-11237

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-11237/
Summaries are generated and may contain mistakes; the official description above is the record.