CVE-2020-12413

Publication date 16 February 2023

Last updated 24 July 2024

Ubuntu priority

Cvss 3 Severity Score

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

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

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