CVE-2021-42075

Public Exploit

Description

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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.89% Top 30%
Third-Party Advisory openwall.com Third-Party Advisory github.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
http://www.openwall.com/lists/oss-security/2021/11/02/4 mailing list third party advisory exploit
https://github.com/debauchee/barrier/releases/tag/v2.3.4 third party advisory release notes

Frequently Asked Questions

What is the severity of CVE-2021-42075?
CVE-2021-42075 has been scored as a high severity vulnerability.
How to fix CVE-2021-42075?
To fix CVE-2021-42075, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2021-42075 being actively exploited in the wild?
It is possible that CVE-2021-42075 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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