ByteOS Network

NVD Vulnerability Details :

CVE-2021-34813

Analyzed

Source-cve@mitre.org

Published At-16 Jun, 2021 | 18:15

Updated At-23 Jun, 2021 | 14:29

Matrix libolm before 3.2.3 allows a malicious Matrix homeserver to crash a client (while it is attempting to retrieve an Olm encrypted room key backup from the homeserver) because olm_pk_decrypt has a stack-based buffer overflow. Remote code execution might be possible for some nonstandard build configurations.

Date Added	Due Date	Vulnerability Name	Required Action
	N/A

Metrics

Type	Version	Base score	Base severity	Vector
Primary	3.1	9.8	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Primary	2.0	7.5	HIGH	AV:N/AC:L/Au:N/C:P/I:P/A:P

CPE Matches

The Matrix.org Foundation

>>olm>>Versions before 3.2.3(exclusive)

cpe:2.3:a:matrix:olm:*:*:*:*:*:*:*:*

Weaknesses

CWE ID	Type	Source
CWE-787	Primary	nvd@nist.gov

References

Hyperlink	Source	Resource
https://gitlab.matrix.org/matrix-org/olm/-/commit/ccc0d122ee1b4d5e5ca4ec1432086be17d5f901b	cve@mitre.org	Patch Vendor Advisory
https://gitlab.matrix.org/matrix-org/olm/-/releases/3.2.3	cve@mitre.org	Release Notes Vendor Advisory
https://matrix.org/blog/2021/06/14/adventures-in-fuzzing-libolm	cve@mitre.org	Exploit Patch Vendor Advisory

CISA Catalog

Metrics

CPE Matches

Weaknesses

Evaluator Description

Evaluator Impact

Evaluator Solution

Vendor Statements

References

Change History