CVE-2020-12413
Publication date 16 February 2023
Last updated 25 August 2025
Ubuntu priority
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.
Status
| Package | Ubuntu Release | Status |
|---|---|---|
| nss | 22.04 LTS jammy |
Not affected
|
| 20.04 LTS focal |
Not affected
|
|
| 18.04 LTS bionic |
Not affected
|
|
| 16.04 LTS xenial |
Not affected
|
|
| 14.04 LTS trusty |
Not affected
|
Notes
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
| Parameter | Value |
|---|---|
| Base score |
5.9 · Medium
|
| Attack vector | Network |
| Attack complexity | High |
| Privileges required | None |
| User interaction | None |
| Scope | Unchanged |
| Confidentiality | High |
| Integrity impact | None |
| Availability impact | None |
| Vector | CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N |