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    CVE-2008-5081

    The originates_from_local_legacy_unicast_socket function (avahi-core/server.c) in avahi-daemon in Avahi before 0.6.24 allows remote attackers to cause a denial of service (crash) via a crafted mDNS packet with a source port of 0, which triggers an assertion failure.

    Published:Dec 12, 2008
    Last Modified:Apr 23, 2026
    EPS:Dec 17, 2008
    EPSS Score:0.77078
    CVSS Score:5

    Affected Products

    Vendor
    Avahi
    Product
    Avahi
    Vendor
    Redhat
    Product
    Enterprise Linux

    Exploits

    https://www.exploit-db.com/exploits/7520

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-34933 (CVSS 5.5) — Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. P…
    CVE-2026-24401 (CVSS 6.5) — Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. I…
    CVE-2025-68471 (CVSS 6.5) — Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. I…
    CVE-2025-68468 (CVSS 6.5) — Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. I…
    CVE-2025-68276 (CVSS 5.5) — Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. I…
    CVE-2025-59529 (CVSS 5.5) — Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. I…
    CVE-2023-38471 (CVSS 6.2) — A vulnerability was found in Avahi. A reachable assertion exists in the dbus_set_host_name function.…
    CVE-2023-38472 (CVSS 6.2) — A vulnerability was found in Avahi. A reachable assertion exists in the avahi_rdata_parse() function.…
    CVE-2023-38469 (CVSS 6.2) — A vulnerability was found in Avahi, where a reachable assertion exists in avahi_dns_packet_append_record.…
    CVE-2023-38470 (CVSS 6.2) — A vulnerability was found in Avahi. A reachable assertion exists in the avahi_escape_label() function.…

    References

    http://avahi.org/milestone/Avahi%200.6.24
    http://lists.opensuse.org/opensuse-security-announce/2009-02/msg00000.html
    http://secunia.com/advisories/33153
    http://secunia.com/advisories/33220
    http://secunia.com/advisories/33279
    http://secunia.com/advisories/33475
    http://security.gentoo.org/glsa/glsa-200901-11.xml
    http://www.debian.org/security/2008/dsa-1690
    http://www.openwall.com/lists/oss-security/2008/12/14/1
    http://www.securityfocus.com/bid/32825
    http://www.ubuntu.com/usn/usn-696-1
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9987
    https://www.exploit-db.com/exploits/7520
    http://avahi.org/milestone/Avahi%200.6.24
    http://lists.opensuse.org/opensuse-security-announce/2009-02/msg00000.html
    http://secunia.com/advisories/33153
    http://secunia.com/advisories/33220
    http://secunia.com/advisories/33279
    http://secunia.com/advisories/33475
    http://security.gentoo.org/glsa/glsa-200901-11.xml
    http://www.debian.org/security/2008/dsa-1690
    http://www.openwall.com/lists/oss-security/2008/12/14/1
    http://www.securityfocus.com/bid/32825
    http://www.ubuntu.com/usn/usn-696-1
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A9987
    https://www.exploit-db.com/exploits/7520

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High