CVE-2018-4002

Public Exploit

Description

An exploitable denial-of-service vulnerability exists in the mdnscap binary of the CUJO Smart Firewall running firmware 7003. When parsing labels in mDNS packets, the firewall unsafely handles label compression pointers, leading to an uncontrolled recursion that eventually exhausts the stack, crashing the mdnscap process. An unauthenticated attacker can send an mDNS message to trigger this vulnerability.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 3.0 •
CVSS 2.0 •
EPSS 1.17% Top 25%
Third-Party Advisory talosintelligence.com
Affected: n/a CUJO
Published at:
Updated at:

References

Link Tags
https://talosintelligence.com/vulnerability_reports/TALOS-2018-0671 third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2018-4002?
CVE-2018-4002 has been scored as a high severity vulnerability.
How to fix CVE-2018-4002?
To fix CVE-2018-4002, 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-2018-4002 being actively exploited in the wild?
It is possible that CVE-2018-4002 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.
What software or system is affected by CVE-2018-4002?
CVE-2018-4002 affects n/a CUJO.
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