CVE-2021-42075

An issue was discovered in Barrier before 2.3.4. The barriers component (aka the server-side implementation of Barrier) does not correctly close file descriptors for established TCP connections. An unauthenticated remote attacker can thus cause file descriptor exhaustion in the server process, leading to denial of service.

• CWE-772

• http://www.openwall.com/lists/oss-security/2021/11/02/4Exploit, Mailing List, Third Party Advisory
• https://github.com/debauchee/barrier/releases/tag/v2.3.4Release Notes, Third Party Advisory
• http://www.openwall.com/lists/oss-security/2021/11/02/4Exploit, Mailing List, Third Party Advisory
• https://github.com/debauchee/barrier/releases/tag/v2.3.4Release Notes, Third Party Advisory

Published

Nov 8, 2021

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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