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CVE-2020-8244

Published: 30 August 2020

A buffer over-read vulnerability exists in bl <4.0.3, <3.0.1, <2.2.1, and <1.2.3 which could allow an attacker to supply user input (even typed) that if it ends up in consume() argument and can become negative, the BufferList state can be corrupted, tricking it into exposing uninitialized memory via regular .slice() calls.

Priority

Medium

Cvss 3 Severity Score

6.5

Score breakdown

Status

Package Release Status
node-bl
Launchpad, Ubuntu, Debian
impish Not vulnerable
(4.0.3-1)
bionic
Released (1.1.2-1ubuntu1.1)
focal Needs triage

groovy Not vulnerable
(4.0.3-1)
trusty Does not exist

upstream Needs triage

hirsute Not vulnerable
(4.0.3-1)
xenial
Released (0.9.3-1ubuntu0.1~esm1)
Available with Ubuntu Pro
jammy Not vulnerable
(4.0.3-1)
lunar Not vulnerable
(4.0.3-1)
kinetic Not vulnerable
(4.0.3-1)
mantic Not vulnerable
(4.0.3-1)

Severity score breakdown

Parameter Value
Base score 6.5
Attack vector Network
Attack complexity Low
Privileges required None
User interaction None
Scope Unchanged
Confidentiality Low
Integrity impact None
Availability impact Low
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L