Vulnerability · Published Nov 8, 2021 · Assigned by mitre

CVE-2021-42072

High 8.8

In plain English

A high-severity security flaw in the affected software. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.7% (higher than 77% of all known vulnerabilities).

Severity (CVSS NVD)8.8High

Exploit odds (30 days)1.7%top 23.3% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
n/a	n/a	n/a

References

[oss-security] 20211102 Barrier "software KVM switch" multiple remote security issues mailing-list, x_refsource_MLIST
https://github.com/debauchee/barrier/releases/tag/v2.4.0 x_refsource_MISC
FEDORA-2022-3dc519f073 vendor-advisory, x_refsource_FEDORA
FEDORA-2022-09c1a5bab8 vendor-advisory, x_refsource_FEDORA