---
title: "CVE-2020-12413\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-2020-12413?format=md
keywords: index, follow
---

# CVE-2020-12413

Publication date 16 February 2023

Last updated 25 August 2025

---

Ubuntu priority

**Low**

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

## Cvss 3 Severity Score

**5.9 · Medium**

[Score breakdown](https://ubuntu.com/security/CVE-2020-12413?format=md#impact-score)

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## Description

The Raccoon attack is a timing attack on DHE ciphersuites inherit in the
TLS specification. To mitigate this vulnerability, Firefox disabled support
for DHE ciphersuites.

[Read the notes from the security team](https://ubuntu.com/security/CVE-2020-12413?format=md#notes)

## Status

Show unmaintained releases

| Package | Ubuntu Release | Status |
| --- | --- | --- |
| nss | 22.04 LTS jammy | Not affected |
| 21.10 impish | Not affected |
| 21.04 hirsute | Ignored end of life |
| 20.10 groovy | Ignored end of life |
| 20.04 LTS focal | Not affected |
| 18.04 LTS bionic | Not affected |
| 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

---

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

nss doesn't reuse DHE keys, but does reuse ECDHE keys, which is
not problematic for the moment. See page 13 of
https://raccoon-attack.com/RacoonAttack.pdf
and the nss release notes for 3.17:
https://developer.mozilla.org/en-US/docs/Mozilla/Projects/NSS/NSS\_3.17\_release\_notes
Since 3.17 includes a way to disable ECDHE key reuse with the
SSL\_REUSE\_SERVER\_ECDHE\_KEY option, marking this CVE as fixed in
fixed in 3.17.

## Severity score breakdown

CVSS version:
CVSS v3.0

**Base score**

5.9 · Medium

* Base metrics

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

  | Parameter | Value |
  | --- | --- |
  | Base score | 5.9 · Medium |
  | Exploitability score | - |
  | Impact score | - |

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

## References

* [MITRE](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-12413)
* [NVD](https://nvd.nist.gov/vuln/detail/CVE-2020-12413)
* [Launchpad](https://launchpad.net/bugs/cve/CVE-2020-12413)
* [Debian](https://security-tracker.debian.org/tracker/CVE-2020-12413)

### Other references

* <https://raccoon-attack.com/>
* <https://www.cve.org/CVERecord?id=CVE-2020-12413>