VulnerabilityModified
CVE-2021-42075
An unauthenticated remote attacker can thus cause file descriptor exhaustion in the server process, leading to denial of service.
HIGH 7.5EPSS 2.20%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (2.20%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a 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.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
- EPSS
- 2.20% probability · 81th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-772
- Affected
- barrier project/barrier
- Source
- cve@mitre.org
References
- 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
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.