Vulnerability CVE-2018-25021
Published: 2021-12-13

Description:
The TCP Server module in toxcore before 0.2.8 doesn't free the TCP priority queue under certain conditions, which allows a remote attacker to exhaust the system's memory, causing a denial of service (DoS).

Type:

CWE-404

 (Improper Resource Shutdown or Release)

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
Digitalocean -> Toxcore 

 References:
https://blog.tox.chat/2018/10/memory-leak-bug-and-new-toxcore-release-fixing-it/
https://github.com/TokTok/c-toxcore/issues/1214
https://github.com/TokTok/c-toxcore/pull/1216
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