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CVE-2019-19963

Published: 25 December 2019

An issue was discovered in wolfSSL before 4.3.0 in a non-default configuration where DSA is enabled. DSA signing uses the BEEA algorithm during modular inversion of the nonce, leading to a side-channel attack against the nonce.

Priority

Medium

Cvss 3 Severity Score

5.3

Score breakdown

Status

Package Release Status
wolfssl
Launchpad, Ubuntu, Debian
bionic Needs triage

disco Ignored
(end of life)
eoan Ignored
(end of life)
focal Not vulnerable
(4.3.0+dfsg-2)
groovy Not vulnerable
(4.3.0+dfsg-2)
hirsute Not vulnerable
(4.3.0+dfsg-2)
impish Not vulnerable
(4.3.0+dfsg-2)
jammy Not vulnerable
(4.3.0+dfsg-2)
kinetic Not vulnerable
(4.3.0+dfsg-2)
lunar Not vulnerable
(4.3.0+dfsg-2)
mantic Not vulnerable
(4.3.0+dfsg-2)
trusty Does not exist

upstream
Released (4.3.0+dfsg-1)
xenial Needs triage

Severity score breakdown

Parameter Value
Base score 5.3
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality Low
Integrity impact None
Availability impact None
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N