CVE-2018-25021

Public Exploit

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).

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 0.98% Top 25%
Third-Party Advisory tox.chat Third-Party Advisory github.com Third-Party Advisory github.com
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://github.com/TokTok/c-toxcore/issues/1214 third party advisory exploit
https://github.com/TokTok/c-toxcore/pull/1216 third party advisory
https://blog.tox.chat/2018/10/memory-leak-bug-and-new-toxcore-release-fixing-it/ third party advisory

Frequently Asked Questions

What is the severity of CVE-2018-25021?
CVE-2018-25021 has been scored as a high severity vulnerability.
How to fix CVE-2018-25021?
To fix CVE-2018-25021, 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-2018-25021 being actively exploited in the wild?
It is possible that CVE-2018-25021 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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