# CVE-2017-14503: Memory corruption in n/a

> An out-of-bounds read in libarchive allows attackers to cause denial of service or disclose information via a crafted LHA archive.

- **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:** 17 Sep 2017
- **Updated:** 5 Aug 2024
- **Also known as:** ALPINE-CVE-2017-14503, DEBIAN-CVE-2017-14503, GHSA-66h8-g4c7-pp34, UBUNTU-CVE-2017-14503

## What is CVE-2017-14503?

CVE-2017-14503 is a medium-severity memory corruption vulnerability in Libarchive Libarchive, published on 17 Sep 2017. 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

libarchive 3.3.2 suffers from an out-of-bounds read within lha_read_data_none() in archive_read_support_format_lha.c when extracting a specially crafted lha archive, related to lha_crc16.

Weakness: CWE-125 (Out-of-bounds Read)

## Which versions are affected by CVE-2017-14503?

It affects 1 product.


Products: Libarchive Libarchive.

## How do I fix CVE-2017-14503?

Upgrade to a fixed version.

## Is CVE-2017-14503 being exploited?

There is no known exploitation of CVE-2017-14503 in the wild and no public exploit code.

## Other vulnerabilities in Libarchive Libarchive

- [CVE-2024-37407](https://insights.sbomify.com/CVE-2024-37407/): Memory corruption in n/a (critical 9.1)
- [CVE-2016-1541](https://insights.sbomify.com/CVE-2016-1541/): Memory corruption in n/a (high 8.8)
- [CVE-2016-6250](https://insights.sbomify.com/CVE-2016-6250/): Integer overflow in n/a (high 8.6)
- [CVE-2025-5914](https://insights.sbomify.com/CVE-2025-5914/): Libarchive: double free at archive_read_format_rar_seek_data() in archive_read_support_format_rar.c (high 7.8)
- [CVE-2024-48957](https://insights.sbomify.com/CVE-2024-48957/): Memory corruption in n/a (high 7.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-14503 and fix it if it is affected.

What it is: CVE-2017-14503 is a medium-severity memory corruption vulnerability in Libarchive Libarchive, published on 17 Sep 2017. 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-2017-14503 in the wild and no public exploit code.

Affected product: Libarchive Libarchive. 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-2017-14503/ (Markdown: https://insights.sbomify.com/CVE-2017-14503/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-14503
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-14503
- OSV: https://osv.dev/vulnerability/CVE-2017-14503

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From sbomify Insights: https://insights.sbomify.com/CVE-2017-14503/
Summaries are generated and may contain mistakes; the official description above is the record.