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CVE-2018-12404

Published: 12 December 2018

A cached side channel attack during handshakes using RSA encryption could allow for the decryption of encrypted content. This is a variant of the Adaptive Chosen Ciphertext attack (AKA Bleichenbacher attack) and affects all NSS versions prior to NSS 3.41.

Priority

Medium

Cvss 3 Severity Score

5.9

Score breakdown

Status

Package Release Status
nss
Launchpad, Ubuntu, Debian
upstream
Released (3.36.6,3.40.1,2:3.41-1)
trusty
Released (2:3.28.4-0ubuntu0.14.04.4)
xenial
Released (2:3.28.4-0ubuntu0.16.04.4)
bionic
Released (2:3.35-2ubuntu2.1)
cosmic
Released (2:3.36.1-1ubuntu1.1)
Patches:
upstream: https://hg.mozilla.org/projects/nss/rev/4b966fea84c8 (3.41)
upstream: https://hg.mozilla.org/projects/nss/rev/9d1be6a2e610 (3.41)
upstream: https://hg.mozilla.org/projects/nss/rev/f5ef34273311 (3.41)
upstream: https://hg.mozilla.org/projects/nss/rev/93b536c98e60 (3.36)
upstream: https://hg.mozilla.org/projects/nss/rev/2ac9939c87cc (3.36)
upstream: https://hg.mozilla.org/projects/nss/rev/f550aef6074c (3.36)

Severity score breakdown

Parameter Value
Base score 5.9
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact None
Availability impact None
Vector CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N