CVE-2018-4011 Integer overflow in CUJO
An unauthenticated attacker can crash the mdnscap process on CUJO Smart Firewalls by sending a malicious mDNS packet, causing a denial of service.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2018-4011?
CVE-2018-4011 is a medium-severity vulnerability in CUJO, published on 21 Mar 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
An exploitable integer underflow vulnerability exists in the mdnscap binary of the CUJO Smart Firewall, version 7003. When parsing SRV records in an mDNS packet, the "RDLENGTH" value is handled incorrectly, leading to an out-of-bounds access that crashes the mdnscap process. An unauthenticated attacker can send an mDNS message to trigger this vulnerability.
Weakness: CWE-191
Which versions are affected by CVE-2018-4011?
It affects 1 product.
Products include Getcujo Smart Firewall.
How do I fix CVE-2018-4011?
No fix has been published for CVE-2018-4011 yet. Limit exposure of the affected software until one is available.
Is CVE-2018-4011 being exploited?
There is no known exploitation of CVE-2018-4011 in the wild and no public exploit code.
Other vulnerabilities in CUJO
Sources
Also known as GHSA-whw3-pv3m-qccm.