CVE-2021-42076

HIGH

Barrier < 2.3.4 - Memory Exhaustion via Long TCP Messages

Title source: llm

Description

An issue was discovered in Barrier before 2.3.4. An attacker can cause memory exhaustion in the barriers component (aka the server-side implementation of Barrier) and barrierc by sending long TCP messages.

References (2)

Core 2

Core References

Exploit, Mailing List, Third Party Advisory mailing-list x_refsource_mlist

http://www.openwall.com/lists/oss-security/2021/11/02/4

Release Notes, Third Party Advisory x_refsource_misc

https://github.com/debauchee/barrier/releases/tag/v2.3.4

Scores

CVSS v3 7.5

EPSS 0.0152

EPSS Percentile 71.6%

Attack Vector NETWORK

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

Details

CWE

CWE-787

Status published

Products (1)

barrier_project/barrier < 2.3.4

Published Nov 08, 2021

Tracked Since Feb 18, 2026