---
title: "CVE-2019-15795\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-2019-15795?format=md
keywords: index, follow
---

# CVE-2019-15795

Publication date 20 January 2020

Last updated 25 August 2025

---

Ubuntu priority

**Medium**

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

## Cvss 3 Severity Score

**4.7 · Medium**

[Score breakdown](https://ubuntu.com/security/CVE-2019-15795?format=md#impact-score)

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## Description

python-apt only checks the MD5 sums of downloaded files in
`Version.fetch\_binary()` and `Version.fetch\_source()` of apt/package.py in
version 1.9.0ubuntu1 and earlier. This allows a man-in-the-middle attack
which could potentially be used to install altered packages and has been
fixed in versions 1.9.0ubuntu1.2, 1.6.5ubuntu0.1,
1.1.0~beta1ubuntu0.16.04.7, 0.9.3.5ubuntu3+esm2, and 0.8.3ubuntu7.5.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2019-15795?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| python-apt | 19.10 eoan | Fixed 1.9.0ubuntu1.2 |
| 19.04 disco | Fixed 1.8.5~ubuntu0.2 |
| 18.04 LTS bionic | Fixed 1.6.5ubuntu0.1 |
| 16.04 LTS xenial | Fixed 1.1.0~beta1ubuntu0.16.04.7 |
| 14.04 LTS trusty | Fixed 0.9.3.5ubuntu3+esm2  Ubuntu Pro |

---

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

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## Notes

---

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

this requires a fix in aptdaemon also

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

4.7 · Medium

* Base metrics

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

  | Parameter | Value |
  | --- | --- |
  | Base score | 4.7 · Medium |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2019-15795)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2019-15795)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2019-15795)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2019-15795)

### Related Ubuntu Security Notices (USN)

+ [USN-4247-3](https://usn.ubuntu.com/USN-4247-3)
+ python-apt vulnerabilities
+ 23 January 2020

+ [USN-4247-1](https://usn.ubuntu.com/USN-4247-1)
+ python-apt vulnerabilities
+ 22 January 2020

### Other references

* <https://www.cve.org/CVERecord?id=CVE-2019-15795>