---
title: "CVE-2018-13844\n    | Ubuntu"
description: Ubuntu is an open source software operating system that runs from the
  desktop, to the cloud, to all your internet connected things.
url: https://ubuntu.com/security/CVE-2018-13844?format=md
keywords: index, follow
---

# CVE-2018-13844

Publication date 10 July 2018

Last updated 4 August 2025

---

Ubuntu priority

**Low**

[Why this priority?](https://ubuntu.com/security/cves/about#priority )

## Cvss 3 Severity Score

**7.5 · High**

[Score breakdown](https://ubuntu.com/security/CVE-2018-13844?format=md#impact-score)

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## Description

An issue has been found in HTSlib 1.8. It is a memory leak in fai\_read in
faidx.c. NOTE: This has been disputed with the assertion that this
vulnerability exists in the test harness and HTSlib users would be aware of
the need to destruct this object returned by fai\_load() in their own code

[Read the notes from the security team](https://ubuntu.com/security/CVE-2018-13844?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| htslib | 19.04 disco | Not affected |
| 18.10 cosmic | Not affected |
| 18.04 LTS bionic | Not affected |
| 17.10 artful | Ignored end of life |
| 16.04 LTS xenial | Not affected |
| 14.04 LTS trusty | Not affected |

---

* [How can I get the fixes?](https://ubuntu.com/security/cves/about#security)
* [What do statuses mean?](https://ubuntu.com/security/cves/about#statuses)

## Notes

---

### [ebarretto](https://launchpad.net/~ebarretto)

Fix was done in test code. Since the test is only available in
htslib >= 1.8, then marking as not affected in earlier versions
of htslib

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

7.5 · High

* Base metrics

  | Parameter | Value |
  | --- | --- |
  | Attack vector | Network |
  | Attack complexity | Low |
  | Privileges required | None |
  | User interaction | None |
  | Scope | Unchanged |
  | Confidentiality impact | None |
  | Integrity impact | None |
  | Availability impact | High |
* Scores

  | Parameter | Value |
  | --- | --- |
  | Base score | 7.5 · High |
  | Exploitability score | - |
  | Impact score | - |

**Vector:** CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-13844)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2018-13844)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2018-13844)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2018-13844)

### Other references

* <https://github.com/samtools/htslib/issues/731#issuecomment-403675330>
* <https://www.cve.org/CVERecord?id=CVE-2018-13844>