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CVE-2009-0758

The originates_from_local_legacy_unicast_socket function in avahi-core/server.c in avahi-daemon 0...

7.8 HighFix available

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.

Exploit likelihood

2.01%Up 0.7 points since Feb 4, 2022
90%50%10%1%

What each source reports

NVD Score used 7.8

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.

Record
CVE-2009-0758
CVSS 2.0
7.8 HighAV:N/AC:L/Au:N/C:N/I:N/A:C
Weakness
CWE-399
Updated
2026-11-02
CVE List No score

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.

Record
CVE-2009-0758
Updated
2026-11-02
EUVDEUVD-2009-0758 No score

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.

Record
EUVD-2009-0758
Updated
2026-11-03
GitHub AdvisoriesGHSA-g7f8-4qm9-qgg5 No score

The originates_from_local_legacy_unicast_socket function in avahi-core/server.c in avahi-daemon 0...

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.

Record
GHSA-g7f8-4qm9-qgg5
Updated
2026-11-02
OSV No score

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.

Record
CVE-2009-0758
Updated
2026-11-02
OSVDEBIAN-CVE-2009-0758 No score

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.

Record
DEBIAN-CVE-2009-0758
Updated
2026-11-02
OSVopenSUSE-SU-2024:10363-1 No score

avahi-0.6.32-2.3 on GA media

These are all security issues fixed in the avahi-0.6.32-2.3 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2024:10363-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
avahi
Debian:12
 before 0.6.24-3
0.6.24-3
avahi
Debian:13
 before 0.6.24-3
0.6.24-3
avahi
Debian:14
 before 0.6.24-3
0.6.24-3
avahi
Debian:5.0
From an advisory covering 2 CVEs
 before 0.6.23-3lenny2, plus listed versions
0.6.23-3lenny1
0.6.23-3lenny2
avahi
Red Hat:enterprise_linux:5::client_workstation
From an advisory covering 2 CVEs
 before 0:0.6.16-9.el5_5
0:0.6.16-9.el5_5
avahi-compat-howl-devel
Red Hat:enterprise_linux:5::client_workstation
From an advisory covering 2 CVEs
 before 0:0.6.16-9.el5_5
0:0.6.16-9.el5_5
avahi-compat-libdns_sd-devel
Red Hat:enterprise_linux:5::client_workstation
From an advisory covering 2 CVEs
 before 0:0.6.16-9.el5_5
0:0.6.16-9.el5_5
avahi-debuginfo
Red Hat:enterprise_linux:5::client_workstation
From an advisory covering 2 CVEs
 before 0:0.6.16-9.el5_5
0:0.6.16-9.el5_5
avahi-devel
Red Hat:enterprise_linux:5::client_workstation
From an advisory covering 2 CVEs
 before 0:0.6.16-9.el5_5
0:0.6.16-9.el5_5
avahi-glib-devel
Red Hat:enterprise_linux:5::client_workstation
From an advisory covering 2 CVEs
 before 0:0.6.16-9.el5_5
0:0.6.16-9.el5_5
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Affected packages
PackageAffectedFixed
avahi-qt3-devel
Red Hat:enterprise_linux:5::client_workstation
From an advisory covering 2 CVEs
 before 0:0.6.16-9.el5_5
0:0.6.16-9.el5_5
avahi
Red Hat:enterprise_linux:5::client
From an advisory covering 2 CVEs
 before 0:0.6.16-9.el5_5
0:0.6.16-9.el5_5
avahi-compat-howl
Red Hat:enterprise_linux:5::client
From an advisory covering 2 CVEs
 before 0:0.6.16-9.el5_5
0:0.6.16-9.el5_5
avahi-compat-howl-devel
Red Hat:enterprise_linux:5::client
From an advisory covering 2 CVEs
 before 0:0.6.16-9.el5_5
0:0.6.16-9.el5_5
avahi-compat-libdns_sd
Red Hat:enterprise_linux:5::client
From an advisory covering 2 CVEs
 before 0:0.6.16-9.el5_5
0:0.6.16-9.el5_5
avahi-compat-libdns_sd-devel
Red Hat:enterprise_linux:5::client
From an advisory covering 2 CVEs
 before 0:0.6.16-9.el5_5
0:0.6.16-9.el5_5
avahi-debuginfo
Red Hat:enterprise_linux:5::client
From an advisory covering 2 CVEs
 before 0:0.6.16-9.el5_5
0:0.6.16-9.el5_5
avahi-devel
Red Hat:enterprise_linux:5::client
From an advisory covering 2 CVEs
 before 0:0.6.16-9.el5_5
0:0.6.16-9.el5_5
avahi-glib
Red Hat:enterprise_linux:5::client
From an advisory covering 2 CVEs
 before 0:0.6.16-9.el5_5
0:0.6.16-9.el5_5
avahi-glib-devel
Red Hat:enterprise_linux:5::client
From an advisory covering 2 CVEs
 before 0:0.6.16-9.el5_5
0:0.6.16-9.el5_5
avahi-qt3
Red Hat:enterprise_linux:5::client
From an advisory covering 2 CVEs
 before 0:0.6.16-9.el5_5
0:0.6.16-9.el5_5
avahi-qt3-devel
Red Hat:enterprise_linux:5::client
From an advisory covering 2 CVEs
 before 0:0.6.16-9.el5_5
0:0.6.16-9.el5_5
avahi-tools
Red Hat:enterprise_linux:5::client
From an advisory covering 2 CVEs
 before 0:0.6.16-9.el5_5
0:0.6.16-9.el5_5
avahi
Red Hat:enterprise_linux:5::server
From an advisory covering 2 CVEs
 before 0:0.6.16-9.el5_5
0:0.6.16-9.el5_5
avahi-compat-howl
Red Hat:enterprise_linux:5::server
From an advisory covering 2 CVEs
 before 0:0.6.16-9.el5_5
0:0.6.16-9.el5_5
avahi-compat-howl-devel
Red Hat:enterprise_linux:5::server
From an advisory covering 2 CVEs
 before 0:0.6.16-9.el5_5
0:0.6.16-9.el5_5
avahi-compat-libdns_sd
Red Hat:enterprise_linux:5::server
From an advisory covering 2 CVEs
 before 0:0.6.16-9.el5_5
0:0.6.16-9.el5_5
avahi-compat-libdns_sd-devel
Red Hat:enterprise_linux:5::server
From an advisory covering 2 CVEs
 before 0:0.6.16-9.el5_5
0:0.6.16-9.el5_5
avahi-debuginfo
Red Hat:enterprise_linux:5::server
From an advisory covering 2 CVEs
 before 0:0.6.16-9.el5_5
0:0.6.16-9.el5_5
avahi-devel
Red Hat:enterprise_linux:5::server
From an advisory covering 2 CVEs
 before 0:0.6.16-9.el5_5
0:0.6.16-9.el5_5
avahi-glib
Red Hat:enterprise_linux:5::server
From an advisory covering 2 CVEs
 before 0:0.6.16-9.el5_5
0:0.6.16-9.el5_5
avahi-glib-devel
Red Hat:enterprise_linux:5::server
From an advisory covering 2 CVEs
 before 0:0.6.16-9.el5_5
0:0.6.16-9.el5_5
avahi-qt3
Red Hat:enterprise_linux:5::server
From an advisory covering 2 CVEs
 before 0:0.6.16-9.el5_5
0:0.6.16-9.el5_5
avahi-qt3-devel
Red Hat:enterprise_linux:5::server
From an advisory covering 2 CVEs
 before 0:0.6.16-9.el5_5
0:0.6.16-9.el5_5
avahi-tools
Red Hat:enterprise_linux:5::server
From an advisory covering 2 CVEs
 before 0:0.6.16-9.el5_5
0:0.6.16-9.el5_5
avahi
openSUSE:Tumbleweed
From an advisory covering 3 CVEs
 before 0.6.32-2.3
0.6.32-2.3

History

History
RecordedChangedSources
affected, facts
aliasesEUVD
first indexedCVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2009-0758 is a high vulnerability (CVSS 7.8) in Avahi Avahi-daemon, published March 3, 2009. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.01%, the 80th percentile. Fixed in avahi 0.6.24-3.

References

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