{"containers": {"cna": {"affected": [{"product": "n/a", "vendor": "n/a", "versions": [{"status": "affected", "version": "n/a"}]}], "descriptions": [{"lang": "en", "value": "avahi-daemon-check-dns.sh in the Debian avahi package through 0.8-4 is executed as root via /etc/network/if-up.d/avahi-daemon, and allows a local attacker to cause a denial of service or create arbitrary empty files via a symlink attack on files under /run/avahi-daemon. NOTE: this only affects the packaging for Debian GNU/Linux (used indirectly by SUSE), not the upstream Avahi product."}], "problemTypes": [{"descriptions": [{"description": "n/a", "lang": "en", "type": "text"}]}], "providerMetadata": {"dateUpdated": "2022-06-07T20:06:12", "orgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "shortName": "mitre"}, "references": [{"tags": ["x_refsource_MISC"], "url": "https://packages.debian.org/buster/avahi-daemon"}, {"tags": ["x_refsource_MISC"], "url": "https://packages.debian.org/sid/avahi-daemon"}, {"tags": ["x_refsource_MISC"], "url": "https://packages.debian.org/bullseye/avahi-daemon"}, {"tags": ["x_refsource_MISC"], "url": "https://security-tracker.debian.org/tracker/CVE-2021-26720"}, {"tags": ["x_refsource_MISC"], "url": "https://bugs.launchpad.net/ubuntu/+source/avahi/+bug/1870824"}, {"tags": ["x_refsource_MISC"], "url": "https://metadata.ftp-master.debian.org/changelogs/main/a/avahi/avahi_0.8-4_changelog"}, {"tags": ["x_refsource_MISC"], "url": "https://www.openwall.com/lists/oss-security/2021/02/15/2"}, {"tags": ["x_refsource_MISC"], "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=982796"}, {"tags": ["x_refsource_MISC"], "url": "https://bugzilla.suse.com/show_bug.cgi?id=1180827"}, {"name": "[debian-lts-announce] 20220607 [SECURITY] [DLA 3047-1] avahi security update", "tags": ["mailing-list", "x_refsource_MLIST"], "url": "https://lists.debian.org/debian-lts-announce/2022/06/msg00009.html"}], "x_legacyV4Record": {"CVE_data_meta": {"ASSIGNER": "cve@mitre.org", "ID": "CVE-2021-26720", "STATE": "PUBLIC"}, "affects": {"vendor": {"vendor_data": [{"product": {"product_data": [{"product_name": "n/a", "version": {"version_data": [{"version_value": "n/a"}]}}]}, "vendor_name": "n/a"}]}}, "data_format": "MITRE", "data_type": "CVE", "data_version": "4.0", "description": {"description_data": [{"lang": "eng", "value": "avahi-daemon-check-dns.sh in the Debian avahi package through 0.8-4 is executed as root via /etc/network/if-up.d/avahi-daemon, and allows a local attacker to cause a denial of service or create arbitrary empty files via a symlink attack on files under /run/avahi-daemon. NOTE: this only affects the packaging for Debian GNU/Linux (used indirectly by SUSE), not the upstream Avahi product."}]}, "problemtype": {"problemtype_data": [{"description": [{"lang": "eng", "value": "n/a"}]}]}, "references": {"reference_data": [{"name": "https://packages.debian.org/buster/avahi-daemon", "refsource": "MISC", "url": "https://packages.debian.org/buster/avahi-daemon"}, {"name": "https://packages.debian.org/sid/avahi-daemon", "refsource": "MISC", "url": "https://packages.debian.org/sid/avahi-daemon"}, {"name": "https://packages.debian.org/bullseye/avahi-daemon", "refsource": "MISC", "url": "https://packages.debian.org/bullseye/avahi-daemon"}, {"name": "https://security-tracker.debian.org/tracker/CVE-2021-26720", "refsource": "MISC", "url": "https://security-tracker.debian.org/tracker/CVE-2021-26720"}, {"name": "https://bugs.launchpad.net/ubuntu/+source/avahi/+bug/1870824", "refsource": "MISC", "url": "https://bugs.launchpad.net/ubuntu/+source/avahi/+bug/1870824"}, {"name": "https://metadata.ftp-master.debian.org/changelogs/main/a/avahi/avahi_0.8-4_changelog", "refsource": "MISC", "url": "https://metadata.ftp-master.debian.org/changelogs/main/a/avahi/avahi_0.8-4_changelog"}, {"name": "https://www.openwall.com/lists/oss-security/2021/02/15/2", "refsource": "MISC", "url": "https://www.openwall.com/lists/oss-security/2021/02/15/2"}, {"name": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=982796", "refsource": "MISC", "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=982796"}, {"name": "https://bugzilla.suse.com/show_bug.cgi?id=1180827", "refsource": "MISC", "url": "https://bugzilla.suse.com/show_bug.cgi?id=1180827"}, {"name": "[debian-lts-announce] 20220607 [SECURITY] [DLA 3047-1] avahi security update", "refsource": "MLIST", "url": "https://lists.debian.org/debian-lts-announce/2022/06/msg00009.html"}]}}}, "adp": [{"providerMetadata": {"orgId": "af854a3a-2127-422b-91ae-364da2661108", "shortName": "CVE", "dateUpdated": "2024-08-03T20:33:40.829Z"}, "title": "CVE Program Container", "references": [{"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://packages.debian.org/buster/avahi-daemon"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://packages.debian.org/sid/avahi-daemon"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://packages.debian.org/bullseye/avahi-daemon"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://security-tracker.debian.org/tracker/CVE-2021-26720"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://bugs.launchpad.net/ubuntu/+source/avahi/+bug/1870824"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://metadata.ftp-master.debian.org/changelogs/main/a/avahi/avahi_0.8-4_changelog"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://www.openwall.com/lists/oss-security/2021/02/15/2"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=982796"}, {"tags": ["x_refsource_MISC", "x_transferred"], "url": "https://bugzilla.suse.com/show_bug.cgi?id=1180827"}, {"name": "[debian-lts-announce] 20220607 [SECURITY] [DLA 3047-1] avahi security update", "tags": ["mailing-list", "x_refsource_MLIST", "x_transferred"], "url": "https://lists.debian.org/debian-lts-announce/2022/06/msg00009.html"}]}]}, "cveMetadata": {"assignerOrgId": "8254265b-2729-46b6-b9e3-3dfca2d5bfca", "assignerShortName": "mitre", "cveId": "CVE-2021-26720", "datePublished": "2021-02-17T21:19:26", "dateReserved": "2021-02-05T00:00:00", "dateUpdated": "2024-08-03T20:33:40.829Z", "state": "PUBLISHED"}, "dataType": "CVE_RECORD", "dataVersion": "5.1"}

{}

{"configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:avahi:avahi:*:*:*:*:*:*:*:*", "matchCriteriaId": "7960274F-0D6F-4054-8236-145A6430B6CE", "versionEndIncluding": "0.8-4", "vulnerable": true}], "negate": false, "operator": "OR"}]}, {"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*", "matchCriteriaId": "DEECE5FC-CACF-4496-A3E7-164736409252", "vulnerable": true}, {"criteria": "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*", "matchCriteriaId": "07B237A9-69A3-4A9C-9DA0-4E06BD37AE73", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "descriptions": [{"lang": "en", "value": "avahi-daemon-check-dns.sh in the Debian avahi package through 0.8-4 is executed as root via /etc/network/if-up.d/avahi-daemon, and allows a local attacker to cause a denial of service or create arbitrary empty files via a symlink attack on files under /run/avahi-daemon. NOTE: this only affects the packaging for Debian GNU/Linux (used indirectly by SUSE), not the upstream Avahi product."}, {"lang": "es", "value": "El archivo avahi-daemon-check-dns.sh en el paquete Debian avahi a versiones hasta 0.8-4, es ejecutado como root por medio de /etc/network/if-up.d/avahi-daemon, y permite a un atacante local causar una denegaci\u00f3n de servicio o crear archivos vac\u00edos arbitrarios por medio de un ataque de tipo symlink en archivos bajo /run/avahi-daemon. NOTA: esto solo afecta al empaquetado de Debian GNU/Linux (usado indirectamente por SUSE), no al producto de Avahi previo"}], "id": "CVE-2021-26720", "lastModified": "2024-11-21T05:56:44.693", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "PARTIAL", "baseScore": 4.6, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:L/AC:L/Au:N/C:P/I:P/A:P", "version": "2.0"}, "exploitabilityScore": 3.9, "impactScore": 6.4, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false}], "cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "HIGH", "baseScore": 7.8, "baseSeverity": "HIGH", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2021-02-17T22:15:12.710", "references": [{"source": "cve@mitre.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=982796"}, {"source": "cve@mitre.org", "tags": ["Issue Tracking", "Third Party Advisory"], "url": "https://bugs.launchpad.net/ubuntu/+source/avahi/+bug/1870824"}, {"source": "cve@mitre.org", "tags": ["Issue Tracking", "Third Party Advisory"], "url": "https://bugzilla.suse.com/show_bug.cgi?id=1180827"}, {"source": "cve@mitre.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2022/06/msg00009.html"}, {"source": "cve@mitre.org", "tags": ["Broken Link", "Third Party Advisory"], "url": "https://metadata.ftp-master.debian.org/changelogs/main/a/avahi/avahi_0.8-4_changelog"}, {"source": "cve@mitre.org", "tags": ["Product", "Third Party Advisory"], "url": "https://packages.debian.org/bullseye/avahi-daemon"}, {"source": "cve@mitre.org", "tags": ["Product", "Third Party Advisory"], "url": "https://packages.debian.org/buster/avahi-daemon"}, {"source": "cve@mitre.org", "tags": ["Product", "Third Party Advisory"], "url": "https://packages.debian.org/sid/avahi-daemon"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://security-tracker.debian.org/tracker/CVE-2021-26720"}, {"source": "cve@mitre.org", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://www.openwall.com/lists/oss-security/2021/02/15/2"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=982796"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Third Party Advisory"], "url": "https://bugs.launchpad.net/ubuntu/+source/avahi/+bug/1870824"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Issue Tracking", "Third Party Advisory"], "url": "https://bugzilla.suse.com/show_bug.cgi?id=1180827"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://lists.debian.org/debian-lts-announce/2022/06/msg00009.html"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Broken Link", "Third Party Advisory"], "url": "https://metadata.ftp-master.debian.org/changelogs/main/a/avahi/avahi_0.8-4_changelog"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Product", "Third Party Advisory"], "url": "https://packages.debian.org/bullseye/avahi-daemon"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Product", "Third Party Advisory"], "url": "https://packages.debian.org/buster/avahi-daemon"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Product", "Third Party Advisory"], "url": "https://packages.debian.org/sid/avahi-daemon"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://security-tracker.debian.org/tracker/CVE-2021-26720"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Mailing List", "Third Party Advisory"], "url": "https://www.openwall.com/lists/oss-security/2021/02/15/2"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-59"}], "source": "nvd@nist.gov", "type": "Primary"}]}

{}