CVE-2025-68471

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{"affected": [{"affectedData": [{"product": "avahi", "vendor": "avahi", "versions": [{"status": "affected", "version": "<= 0.9-rc2"}]}], "source": "security-advisories@github.com"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:avahi:avahi:*:*:*:*:*:*:*:*", "matchCriteriaId": "6481267F-934F-4A0C-9B25-59738E798458", "versionEndExcluding": "0.9", "vulnerable": true}, {"criteria": "cpe:2.3:a:avahi:avahi:0.9:rc1:*:*:*:*:*:*", "matchCriteriaId": "76971590-AEED-4CB1-B7B7-45EA8FD11524", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Avahi is a system which facilitates service discovery on a local network via the mDNS/DNS-SD protocol suite. In 0.9-rc2 and earlier, avahi-daemon can be crashed by sending 2 unsolicited announcements with CNAME resource records 2 seconds apart."}, {"lang": "es", "value": "Avahi es un sistema que facilita el descubrimiento de servicios en una red local a trav\u00e9s del conjunto de protocolos mDNS/DNS-SD. En 0.9-rc2 y versiones anteriores, avahi-daemon puede ser colapsado al enviar 2 anuncios no solicitados con registros de recursos CNAME con 2 segundos de diferencia."}], "id": "CVE-2025-68471", "lastModified": "2026-06-17T09:59:07.097", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 6.5, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 3.6, "source": "security-advisories@github.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2025-68471", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-01-12T18:42:17.248521Z", "version": "2.0.3"}}]}, "published": "2026-01-12T18:15:48.327", "references": [{"source": "security-advisories@github.com", "tags": ["Patch"], "url": "https://github.com/avahi/avahi/commit/9c6eb53bf2e290aed84b1f207e3ce35c54cc0aa1"}, {"source": "security-advisories@github.com", "tags": ["Exploit", "Issue Tracking", "Patch"], "url": "https://github.com/avahi/avahi/issues/678"}, {"source": "security-advisories@github.com", "tags": ["Exploit", "Patch", "Vendor Advisory"], "url": "https://github.com/avahi/avahi/security/advisories/GHSA-56rf-42xr-qmmg"}], "sourceIdentifier": "security-advisories@github.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-617"}], "source": "security-advisories@github.com", "type": "Secondary"}]}

{"bugzilla": {"description": "avahi: Avahi: Denial of Service via unsolicited CNAME announcements", "id": "2428717", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2428717"}, "csaw": false, "cvss3": {"cvss3_base_score": "6.5", "cvss3_scoring_vector": "CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H", "status": "draft"}, "cwe": "CWE-617", "details": ["A flaw was found in Avahi, a system that enables devices to discover services on a local network using the mDNS/DNS-SD (Multicast Domain Name System/DNS-based Service Discovery) protocols. A remote attacker can exploit this by sending two specific network messages, known as unsolicited announcements with CNAME resource records, within a two-second timeframe. This action can cause the `avahi-daemon` process to crash, leading to a Denial of Service (DoS) for the affected system."], "name": "CVE-2025-68471", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:10", "fix_state": "Fix deferred", "package_name": "avahi", "product_name": "Red Hat Enterprise Linux 10"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Fix deferred", "package_name": "avahi", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Fix deferred", "package_name": "avahi", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Fix deferred", "package_name": "avahi", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/o:redhat:enterprise_linux:9", "fix_state": "Fix deferred", "package_name": "avahi", "product_name": "Red Hat Enterprise Linux 9"}, {"cpe": "cpe:/a:redhat:openshift:4", "fix_state": "Fix deferred", "package_name": "rhcos", "product_name": "Red Hat OpenShift Container Platform 4"}], "public_date": "2026-01-12T17:39:57Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2025-68471\nhttps://nvd.nist.gov/vuln/detail/CVE-2025-68471\nhttps://github.com/avahi/avahi/commit/9c6eb53bf2e290aed84b1f207e3ce35c54cc0aa1\nhttps://github.com/avahi/avahi/issues/678\nhttps://github.com/avahi/avahi/security/advisories/GHSA-56rf-42xr-qmmg"], "threat_severity": "Moderate"}

{"created": "2026-01-13T09:27:23.638447+00:00", "updated": "2026-01-13T09:27:23.638537+00:00", "vendors": ["avahi", "avahi$PRODUCT$avahi"]}