CVE-2009-0758 Denial of service in n/a
Remote attackers can cause denial of service in Avahi daemon via crafted mDNS packets due to incorrect port byte order handling.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2009-0758?
CVE-2009-0758 is a high-severity denial of service vulnerability in n/a, published on 3 Mar 2009. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
The originates_from_local_legacy_unicast_socket function in avahi-core/server.c in avahi-daemon 0.6.23 does not account for the network byte order of a port number when processing incoming multicast packets, which allows remote attackers to cause a denial of service (network bandwidth and CPU consumption) via a crafted legacy unicast mDNS query packet that triggers a multicast packet storm.
Weakness: CWE-399
Which versions are affected by CVE-2009-0758?
It affects 1 product.
Products include Avahi Avahi-Daemon.
How do I fix CVE-2009-0758?
Upgrade to a fixed version.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2009-0758 being exploited?
There is no known exploitation of CVE-2009-0758 in the wild and no public exploit code.
Sources
Also known as DEBIAN-CVE-2009-0758, GHSA-g7f8-4qm9-qgg5.