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CVE-2020-1968

Published: 9 September 2020

The Raccoon attack exploits a flaw in the TLS specification which can lead to an attacker being able to compute the pre-master secret in connections which have used a Diffie-Hellman (DH) based ciphersuite. In such a case this would result in the attacker being able to eavesdrop on all encrypted communications sent over that TLS connection. The attack can only be exploited if an implementation re-uses a DH secret across multiple TLS connections. Note that this issue only impacts DH ciphersuites and not ECDH ciphersuites. This issue affects OpenSSL 1.0.2 which is out of support and no longer receiving public updates. OpenSSL 1.1.1 is not vulnerable to this issue. Fixed in OpenSSL 1.0.2w (Affected 1.0.2-1.0.2v).

Priority

Low

Cvss 3 Severity Score

3.7

Score breakdown

Status

Package Release Status
edk2
Launchpad, Ubuntu, Debian
impish Not vulnerable
(uses openssl 1.1.1)
bionic Not vulnerable
(uses openssl 1.1.0)
focal Not vulnerable
(uses openssl 1.1.1)
groovy Not vulnerable
(uses openssl 1.1.1)
trusty Does not exist

upstream Needs triage

kinetic Not vulnerable
(uses openssl 1.1.1)
lunar Not vulnerable
(uses openssl 1.1.1)
hirsute Not vulnerable
(uses openssl 1.1.1)
jammy Not vulnerable
(uses openssl 1.1.1)
xenial Needed

mantic Not vulnerable
(uses openssl 1.1.1)
nodejs
Launchpad, Ubuntu, Debian
impish Not vulnerable
(uses system openssl1.1)
bionic Not vulnerable
(uses system openssl1.0)
kinetic Not vulnerable
(uses system openssl1.1)
lunar Not vulnerable
(uses system openssl1.1)
focal Not vulnerable
(uses system openssl1.1)
groovy Not vulnerable
(uses system openssl1.1)
hirsute Not vulnerable
(uses system openssl1.1)
jammy Not vulnerable
(uses openssl 1.1)
trusty Not vulnerable
(uses system openssl)
upstream Needs triage

xenial Not vulnerable
(uses system openssl)
mantic Not vulnerable
(uses system openssl1.1)
openssl
Launchpad, Ubuntu, Debian
impish Not vulnerable
(1.1.1f-1ubuntu3)
kinetic Not vulnerable
(1.1.1f-1ubuntu3)
lunar Not vulnerable
(1.1.1f-1ubuntu3)
bionic Not vulnerable
(1.1.1-1ubuntu2.1~18.04.6)
focal Not vulnerable
(1.1.1f-1ubuntu2)
groovy Not vulnerable
(1.1.1f-1ubuntu3)
hirsute Not vulnerable
(1.1.1f-1ubuntu3)
jammy Not vulnerable
(1.1.1f-1ubuntu3)
trusty Needed

upstream Needs triage

xenial
Released (1.0.2g-1ubuntu4.17)
mantic Not vulnerable
(1.1.1f-1ubuntu3)
openssl1.0
Launchpad, Ubuntu, Debian
impish Does not exist

kinetic Does not exist

lunar Does not exist

bionic
Released (1.0.2n-1ubuntu5.4)
focal Does not exist

groovy Does not exist

hirsute Does not exist

jammy Does not exist

trusty Does not exist

upstream Needs triage

xenial Does not exist

mantic Does not exist

Severity score breakdown

Parameter Value
Base score 3.7
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Scope Unchanged
Confidentiality Low
Integrity impact None
Availability impact None
Vector CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N