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CVE-2020-8244 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:6.5 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://hackerone.com/reports/966347	CVE	ExploitPatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2021/06/msg00028.html	CVE	Mailing ListThird Party Advisory
https://hackerone.com/reports/966347	[email protected]	ExploitPatchThird Party Advisory
https://lists.debian.org/debian-lts-announce/2021/06/msg00028.html	[email protected]	Mailing ListThird Party Advisory

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-125	Out-of-bounds Read	[email protected]
CWE-126	Buffer Over-read	[email protected]

Affected Products

Product	Versions
bufferlist project bufferlist	< 1.2.3 >= 2.0.0, < 2.2.1 >= 3.0.0, < 3.0.1 >= 4.0.0, < 4.0.3
CPE cpe:2.3:a:bufferlist_project:bufferlist::::::node.js::* Remediation No remediation found in references.
debian debian linux	9.0
CPE cpe:2.3:o:debian:debian_linux:9.0:::::::* Remediation No remediation found in references.

Change History

9 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
May 24, 2022	Modified Analysis	[email protected]
Jul 1, 2021	CVE Modified	[email protected]
Apr 21, 2021	Modified Analysis	[email protected]
Sep 14, 2020	CVE Modified	[email protected]
Sep 10, 2020	Reanalysis	[email protected]
Sep 3, 2020	Initial Analysis	[email protected]