# CVE-2014-8140: Memory corruption in UnZip

> Remote attackers can execute arbitrary code via a crafted zip file processed by the unzip command's test function.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **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:** Yes
- **Published:** 31 Jan 2020
- **Updated:** 6 Aug 2024
- **Also known as:** ALPINE-CVE-2014-8140, AZL-35332, AZL-6934, DEBIAN-CVE-2014-8140, GHSA-fhf3-rjhh-4c23, UBUNTU-CVE-2014-8140

## What is CVE-2014-8140?

CVE-2014-8140 is a high-severity memory corruption vulnerability in Redhat Enterprise Linux Desktop, published on 31 Jan 2020. 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

Heap-based buffer overflow in the test_compr_eb function in Info-ZIP UnZip 6.0 and earlier allows remote attackers to execute arbitrary code via a crafted zip file in the -t command argument to the unzip command.

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

## Which versions are affected by CVE-2014-8140?

It affects 7 products.


Products: Redhat Enterprise Linux Desktop, Redhat Enterprise Linux Server, Redhat Enterprise Linux Server Aus, Redhat Enterprise Linux Server Eus, Redhat Enterprise Linux Server Tus, Redhat Enterprise Linux Workstation, Unzip Project Unzip.

## How do I fix CVE-2014-8140?

Apply the vendor's patch.

## Is CVE-2014-8140 being exploited?

There is no known exploitation of CVE-2014-8140 in the wild and no public exploit code.

## Other vulnerabilities in Redhat Enterprise Linux Desktop

- [CVE-2016-5405](https://insights.sbomify.com/CVE-2016-5405/): Information disclosure in n/a (critical 9.8)
- [CVE-2016-7050](https://insights.sbomify.com/CVE-2016-7050/): Deserialization in n/a (critical 9.8)
- [CVE-2014-8241](https://insights.sbomify.com/CVE-2014-8241/): Null dereference in n/a (critical 9.8)
- [CVE-2014-8567](https://insights.sbomify.com/CVE-2014-8567/): Denial of service in n/a (critical 9.4)
- [CVE-2018-10897](https://insights.sbomify.com/CVE-2018-10897/): Path traversal in yum-utils: (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2014-8140 and fix it if it is affected.

What it is: CVE-2014-8140 is a high-severity memory corruption vulnerability in Redhat Enterprise Linux Desktop, published on 31 Jan 2020. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2014-8140 in the wild and no public exploit code.

Affected product: Redhat Enterprise Linux Desktop. 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-2014-8140/ (Markdown: https://insights.sbomify.com/CVE-2014-8140/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2014-8140
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2014-8140
- OSV: https://osv.dev/vulnerability/CVE-2014-8140

---
From sbomify Insights: https://insights.sbomify.com/CVE-2014-8140/
Summaries are generated and may contain mistakes; the official description above is the record.