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CVE-2020-15309

Published: 21 August 2020

An issue was discovered in wolfSSL before 4.5.0, when single precision is not employed. Local attackers can conduct a cache-timing attack against public key operations. These attackers may already have obtained sensitive information if the affected system has been used for private key operations (e.g., signing with a private key).

Priority

Low

Cvss 3 Severity Score

7.0

Score breakdown

Status

Package Release Status
wolfssl
Launchpad, Ubuntu, Debian
impish Not vulnerable
(4.5.0+dfsg-2)
bionic Needed

focal Needed

trusty Does not exist

upstream
Released (v4.5.0-stable)
groovy Not vulnerable
(4.5.0+dfsg-2)
xenial Needed

hirsute Not vulnerable
(4.5.0+dfsg-2)
jammy Not vulnerable
(4.5.0+dfsg-2)
kinetic Not vulnerable
(4.5.0+dfsg-2)
lunar Not vulnerable
(4.5.0+dfsg-2)
mantic Not vulnerable
(4.5.0+dfsg-2)

Severity score breakdown

Parameter Value
Base score 7.0
Attack vector Local
Attack complexity High
Privileges required Low
User interaction None
Scope Unchanged
Confidentiality High
Integrity impact High
Availability impact High
Vector CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H