Vulnerability CVE-2021-42074


Published: 2021-11-08

Description:
An issue was discovered in Barrier before 2.3.4. An unauthenticated attacker can cause a segmentation fault in the barriers component (aka the server-side implementation of Barrier) by quickly opening and closing TCP connections while sending a Hello message for each TCP session.

Type:

CWE-416

(Use After Free)

CVSS2 => (AV:N/AC:L/Au:N/C:N/I:N/A:P)

CVSS Base Score
Impact Subscore
Exploitability Subscore
5/10
2.9/10
10/10
Exploit range
Attack complexity
Authentication
Remote
Low
No required
Confidentiality impact
Integrity impact
Availability impact
None
None
Partial
Affected software
Barrier project -> Barrier 

 References:
http://www.openwall.com/lists/oss-security/2021/11/02/4
https://github.com/debauchee/barrier/releases/tag/v2.3.4

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