CVE-2018-4003

Public Exploit

Description

An exploitable heap overflow vulnerability exists in the mdnscap binary of the CUJO Smart Firewall running firmware 7003. The string lengths are handled incorrectly when parsing character strings in mDNS resource records, leading to arbitrary code execution in the context of the mdnscap process. An unauthenticated attacker can send an mDNS message to trigger this vulnerability.

Category

9.8
CVSS
Severity: Critical
CVSS 3.1 •
CVSS 3.0 •
CVSS 2.0 •
EPSS 2.63% Top 20%
Third-Party Advisory talosintelligence.com
Affected: n/a CUJO
Published at:
Updated at:

References

Link Tags
https://talosintelligence.com/vulnerability_reports/TALOS-2018-0672 third party advisory exploit

Frequently Asked Questions

What is the severity of CVE-2018-4003?
CVE-2018-4003 has been scored as a critical severity vulnerability.
How to fix CVE-2018-4003?
To fix CVE-2018-4003, 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-2018-4003 being actively exploited in the wild?
It is possible that CVE-2018-4003 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~3% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2018-4003?
CVE-2018-4003 affects n/a CUJO.
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