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8.8
CVSSv3

CVE-2021-42072

Published: 08/11/2021 Updated: 07/11/2023
CVSS v2 Base Score: 6.5 | Impact Score: 6.4 | Exploitability Score: 8
CVSS v3 Base Score: 8.8 | Impact Score: 5.9 | Exploitability Score: 2.8
VMScore: 578
Vector: AV:N/AC:L/Au:S/C:P/I:P/A:P
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Vulnerability Summary

An issue exists in Barrier prior to 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.

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fedoraproject fedora 34

fedoraproject fedora 35

Vendor Advisories

Arch Linux Issues:
A security issue has been found in Barrier before version 240 Contrary to the client side, the server does not verify client connections in any way Since the server is taking over control of the client this may seem enough at first glance However it means that the SSL connection does not add any authenticity or authentication for the server si ...

Mailing Lists

Full Disclosure: Barrier "software KVM switch" multiple remote security issues
<!--X-Body-Begin--> <!--X-User-Header--> oss-sec mailing list archives <!--X-User-Header-End--> <!--X-TopPNI--> By Date By Thread </form> <!--X-TopPNI-End--> <!--X-MsgBody--> <!--X-Subject-Header-Begin--> Barrier "software KVM switch" multiple remote security issues <!--X-Subject-Header-End--> <!--X-Head-of-Message--> From: Mat ...

References

CWE-287https://github.com/debauchee/barrier/releases/tag/v2.4.0http://www.openwall.com/lists/oss-security/2021/11/02/4https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XMU3STOKHPEZSC54MZ42YBFFC2R3BU2Q/https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CIEVNCFEFO7L3NTM4VUZB3WKYYCBTFCI/https://nvd.nist.govhttps://security.archlinux.org/CVE-2021-42072http://seclists.org/oss-sec/2021/q4/87
CVSSv3
CVSSv2
CVSSv3
VMScore
Recommendations:
authentication bypassCVE-2024-30051remoteCVE-2024-27954CVE-2023-51483CVE-2023-47782SSRFCVE-2024-24715CVE-2023-52424
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