# CVE-2018-5727: Integer overflow in n/a

> Remote attackers can cause a denial of service via a crafted BMP file due to an integer overflow in the OpenJPEG library.

- **Severity:** Medium 6.5 (`CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** Yes
- **Published:** 16 Jan 2018
- **Updated:** 5 Aug 2024
- **Also known as:** DEBIAN-CVE-2018-5727, GHSA-r7wc-c46x-5q6f, UBUNTU-CVE-2018-5727

## What is CVE-2018-5727?

CVE-2018-5727 is a medium-severity vulnerability in Uclouvain Openjpeg, published on 16 Jan 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

In OpenJPEG 2.3.0, there is an integer overflow vulnerability in the opj_t1_encode_cblks function (openjp2/t1.c). Remote attackers could leverage this vulnerability to cause a denial of service via a crafted bmp file.

Weakness: CWE-190 (Integer Overflow or Wraparound)

## Which versions are affected by CVE-2018-5727?

It affects 1 product.


Products: Uclouvain Openjpeg.

## How do I fix CVE-2018-5727?

Upgrade to a fixed version.

## Is CVE-2018-5727 being exploited?

There is no known exploitation of CVE-2018-5727 in the wild and no public exploit code.

## Other vulnerabilities in Uclouvain Openjpeg

- [CVE-2013-4289](https://insights.sbomify.com/CVE-2013-4289/): Integer overflow in n/a (critical 10.0)
- [CVE-2013-4290](https://insights.sbomify.com/CVE-2013-4290/): Memory corruption in n/a (critical 10.0)
- [CVE-2012-3358](https://insights.sbomify.com/CVE-2012-3358/): Memory corruption in n/a (critical 10.0)
- [CVE-2018-7648](https://insights.sbomify.com/CVE-2018-7648/): Memory corruption in n/a (critical 9.8)
- [CVE-2017-17479](https://insights.sbomify.com/CVE-2017-17479/): Memory corruption in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-5727 and fix it if it is affected.

What it is: CVE-2018-5727 is a medium-severity vulnerability in Uclouvain Openjpeg, published on 16 Jan 2018. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2018-5727 in the wild and no public exploit code.

Affected product: Uclouvain Openjpeg. 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-2018-5727/ (Markdown: https://insights.sbomify.com/CVE-2018-5727/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-5727
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-5727
- OSV: https://osv.dev/vulnerability/CVE-2018-5727

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From sbomify Insights: https://insights.sbomify.com/CVE-2018-5727/
Summaries are generated and may contain mistakes; the official description above is the record.