Bug 2022094 (CVE-2021-42072) - CVE-2021-42072 barrier: server-side implementation does not sufficiently verify the identify of connecting clients
Summary: CVE-2021-42072 barrier: server-side implementation does not sufficiently veri...
Keywords:
Status: CLOSED UPSTREAM
Alias: CVE-2021-42072
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Red Hat Product Security
QA Contact:
URL:
Whiteboard:
Depends On: 2022095 2022096
Blocks:
TreeView+ depends on / blocked
 
Reported: 2021-11-10 18:28 UTC by Guilherme de Almeida Suckevicz
Modified: 2021-11-10 18:57 UTC (History)
1 user (show)

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Last Closed: 2021-11-10 18:57:04 UTC
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Description Guilherme de Almeida Suckevicz 2021-11-10 18:28:26 UTC 
An issue was discovered in Barrier before 2.4.0. The barriers component (aka the server-side implementation of Barrier) does not sufficiently verify the identify of connecting clients. Clients can thus exploit weaknesses in the provided protocol to cause denial-of-service or stage further attacks that could lead to information leaks or integrity corruption.

References:
https://github.com/debauchee/barrier/releases/tag/v2.4.0
http://www.openwall.com/lists/oss-security/2021/11/02/4
Comment 1 Guilherme de Almeida Suckevicz 2021-11-10 18:29:10 UTC 
Created barrier tracking bugs for this issue:

Affects: epel-8 [bug 2022096]
Affects: fedora-all [bug 2022095]
Comment 2 Product Security DevOps Team 2021-11-10 18:57:02 UTC 
This CVE Bugzilla entry is for community support informational purposes only as it does not affect a package in a commercially supported Red Hat product. Refer to the dependent bugs for status of those individual community products.
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