CVE-2020-8244

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 v3 6.5 MEDIUM
CVSS v2.0 6.4 MEDIUM

6.5^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 3.9 / Impact : 2.5

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact LOW

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

6.4^/10

CVSS v2.0 : MEDIUM

Vector : AV:N/AC:L/Au:N/C:P/I:N/A:P

Exploitability : 10.0 / Impact : 4.9

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact PARTIAL

Integrity Impact NONE

Availability Impact PARTIAL

References

Link	Resource
https://hackerone.com/reports/966347	Exploit Patch Third Party Advisory
https://lists.debian.org/debian-lts-announce/2021/06/msg00028.html	Mailing List Third Party Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:bufferlist_project:bufferlist::::::node.js::*
	cpe:2.3:a:bufferlist_project:bufferlist::::::node.js::*
	cpe:2.3:a:bufferlist_project:bufferlist::::::node.js::*
	cpe:2.3:a:bufferlist_project:bufferlist::::::node.js::*

Configuration 2 (hide)

cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*

History

No history.

Information

Published : 2020-08-30 15:15

Updated : 2022-05-24 17:31

NVD link : CVE-2020-8244

Mitre link : CVE-2020-8244

CVE.ORG link : CVE-2020-8244

JSON object : View

Products Affected

bufferlist_project

bufferlist

debian

debian_linux

CWE

CWE-125

Out-of-bounds Read

CWE-126

Buffer Over-read

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