CVE-2020-8244 Information

Description

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.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

Reference

https://hackerone.com/reports/966347

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

LOW

Availability Impact

NONE

Base Score

LOW

Base Severity

6.5