{"api_version":"1","generated_at":"2026-07-23T07:10:03+00:00","cve":"CVE-2017-17449","urls":{"html":"https://cve.report/CVE-2017-17449","api":"https://cve.report/api/cve/CVE-2017-17449.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2017-17449","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2017-17449"},"summary":{"title":"CVE-2017-17449","description":"The __netlink_deliver_tap_skb function in net/netlink/af_netlink.c in the Linux kernel through 4.14.4, when CONFIG_NLMON is enabled, does not restrict observations of Netlink messages to a single net namespace, which allows local users to obtain sensitive information by leveraging the CAP_NET_ADMIN capability to sniff an nlmon interface for all Netlink activity on the system.","state":"PUBLISHED","assigner":"mitre","published_at":"2017-12-07 00:29:00","updated_at":"2025-04-20 01:37:25"},"problem_types":["CWE-200","n/a"],"metrics":[{"version":"3.0","source":"nvd@nist.gov","type":"Primary","score":"4.7","severity":"MEDIUM","vector":"CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","data":{"version":"3.0","vectorString":"CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","baseScore":4.7,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE"}},{"version":"2.0","source":"nvd@nist.gov","type":"Primary","score":"1.9","severity":"","vector":"AV:L/AC:M/Au:N/C:P/I:N/A:N","data":{"version":"2.0","vectorString":"AV:L/AC:M/Au:N/C:P/I:N/A:N","baseScore":1.9,"accessVector":"LOCAL","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"NONE","availabilityImpact":"NONE"}}],"references":[{"url":"https://access.redhat.com/errata/RHSA-2018:1170","name":"https://access.redhat.com/errata/RHSA-2018:1170","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"Red Hat Customer Portal","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://access.redhat.com/errata/RHSA-2018:0654","name":"https://access.redhat.com/errata/RHSA-2018:0654","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"Red Hat Customer Portal","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"http://www.securityfocus.com/bid/102122","name":"http://www.securityfocus.com/bid/102122","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Third Party Advisory","VDB Entry"],"title":"Linux Kernel 'net/netlink/af_netlink.c' Local Information Disclosure Vulnerability","mime":"text/html","httpstatus":"200","archivestatus":"0"},{"url":"https://usn.ubuntu.com/3619-1/","name":"https://usn.ubuntu.com/3619-1/","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"USN-3619-1: Linux kernel vulnerabilities | Ubuntu security notices","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://usn.ubuntu.com/3653-1/","name":"https://usn.ubuntu.com/3653-1/","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"USN-3653-1: Linux kernel vulnerabilities | Ubuntu security notices","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://usn.ubuntu.com/3655-1/","name":"https://usn.ubuntu.com/3655-1/","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"USN-3655-1: Linux kernel vulnerabilities | Ubuntu security notices","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://source.android.com/security/bulletin/pixel/2018-04-01","name":"https://source.android.com/security/bulletin/pixel/2018-04-01","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"Pixel / Nexus Security Bulletin—April 2018  |  Android Open Source Project","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://usn.ubuntu.com/3657-1/","name":"https://usn.ubuntu.com/3657-1/","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"USN-3657-1: Linux kernel (Raspberry Pi 2) vulnerabilities | Ubuntu security notices | Ubuntu","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.debian.org/security/2017/dsa-4073","name":"https://www.debian.org/security/2017/dsa-4073","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"Debian -- Security Information -- DSA-4073-1 linux","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://usn.ubuntu.com/3655-2/","name":"https://usn.ubuntu.com/3655-2/","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"USN-3655-2: Linux kernel (Trusty HWE) vulnerabilities | Ubuntu security notices","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://access.redhat.com/errata/RHSA-2018:0676","name":"https://access.redhat.com/errata/RHSA-2018:0676","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"Red Hat Customer Portal","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://lkml.org/lkml/2017/12/5/950","name":"https://lkml.org/lkml/2017/12/5/950","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":["Mailing List","Third Party Advisory"],"title":"LKML: Kevin Cernekee: [PATCH] netlink: Add netns check on taps","mime":"text/xml","httpstatus":"200","archivestatus":"200"},{"url":"https://access.redhat.com/errata/RHSA-2018:1130","name":"https://access.redhat.com/errata/RHSA-2018:1130","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"Red Hat Customer Portal","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.debian.org/security/2018/dsa-4082","name":"https://www.debian.org/security/2018/dsa-4082","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"Debian -- Security Information -- DSA-4082-1 linux","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://usn.ubuntu.com/3619-2/","name":"https://usn.ubuntu.com/3619-2/","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"USN-3619-2: Linux kernel (Xenial HWE) vulnerabilities | Ubuntu security notices","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://access.redhat.com/errata/RHSA-2018:1062","name":"https://access.redhat.com/errata/RHSA-2018:1062","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"Red Hat Customer Portal","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://usn.ubuntu.com/3653-2/","name":"https://usn.ubuntu.com/3653-2/","refsource":"af854a3a-2127-422b-91ae-364da2661108","tags":[],"title":"USN-3653-2: Linux kernel (HWE) vulnerabilities | Ubuntu security notices","mime":"text/html","httpstatus":"200","archivestatus":"200"},{"url":"https://www.cve.org/CVERecord?id=CVE-2017-17449","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2017-17449","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"n/a","product":"n/a","version":"affected n/a","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[],"nvd_cpes":[{"cve_year":"2017","cve_id":"17449","vulnerable":"1","versionEndIncluding":"4.14.4","cpe1":"cpe","cpe2":"2.3","cpe3":"o","cpe4":"linux","cpe5":"linux_kernel","cpe6":"*","cpe7":"*","cpe8":"*","cpe9":"*","cpe10":"*","cpe11":"*","cpe12":"*","cpe13":"*"}],"vendor_comments":[],"enrichments":{"kev":null,"epss":{"cve_year":"2017","cve_id":"17449","cve":"CVE-2017-17449","epss":"0.000760000","percentile":"0.227740000","score_date":"2026-05-16","updated_at":"2026-05-17 00:14:31"},"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"providerMetadata":{"dateUpdated":"2024-08-05T20:51:31.636Z","orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE"},"references":[{"name":"USN-3619-2","tags":["vendor-advisory","x_refsource_UBUNTU","x_transferred"],"url":"https://usn.ubuntu.com/3619-2/"},{"name":"DSA-4082","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred"],"url":"https://www.debian.org/security/2018/dsa-4082"},{"tags":["x_refsource_MISC","x_transferred"],"url":"https://lkml.org/lkml/2017/12/5/950"},{"name":"102122","tags":["vdb-entry","x_refsource_BID","x_transferred"],"url":"http://www.securityfocus.com/bid/102122"},{"name":"RHSA-2018:1062","tags":["vendor-advisory","x_refsource_REDHAT","x_transferred"],"url":"https://access.redhat.com/errata/RHSA-2018:1062"},{"tags":["x_refsource_CONFIRM","x_transferred"],"url":"https://source.android.com/security/bulletin/pixel/2018-04-01"},{"name":"RHSA-2018:0654","tags":["vendor-advisory","x_refsource_REDHAT","x_transferred"],"url":"https://access.redhat.com/errata/RHSA-2018:0654"},{"name":"RHSA-2018:0676","tags":["vendor-advisory","x_refsource_REDHAT","x_transferred"],"url":"https://access.redhat.com/errata/RHSA-2018:0676"},{"name":"USN-3653-2","tags":["vendor-advisory","x_refsource_UBUNTU","x_transferred"],"url":"https://usn.ubuntu.com/3653-2/"},{"name":"USN-3655-1","tags":["vendor-advisory","x_refsource_UBUNTU","x_transferred"],"url":"https://usn.ubuntu.com/3655-1/"},{"name":"RHSA-2018:1170","tags":["vendor-advisory","x_refsource_REDHAT","x_transferred"],"url":"https://access.redhat.com/errata/RHSA-2018:1170"},{"name":"RHSA-2018:1130","tags":["vendor-advisory","x_refsource_REDHAT","x_transferred"],"url":"https://access.redhat.com/errata/RHSA-2018:1130"},{"name":"DSA-4073","tags":["vendor-advisory","x_refsource_DEBIAN","x_transferred"],"url":"https://www.debian.org/security/2017/dsa-4073"},{"name":"USN-3655-2","tags":["vendor-advisory","x_refsource_UBUNTU","x_transferred"],"url":"https://usn.ubuntu.com/3655-2/"},{"name":"USN-3653-1","tags":["vendor-advisory","x_refsource_UBUNTU","x_transferred"],"url":"https://usn.ubuntu.com/3653-1/"},{"name":"USN-3657-1","tags":["vendor-advisory","x_refsource_UBUNTU","x_transferred"],"url":"https://usn.ubuntu.com/3657-1/"},{"name":"USN-3619-1","tags":["vendor-advisory","x_refsource_UBUNTU","x_transferred"],"url":"https://usn.ubuntu.com/3619-1/"}],"title":"CVE Program Container"}],"cna":{"affected":[{"product":"n/a","vendor":"n/a","versions":[{"status":"affected","version":"n/a"}]}],"datePublic":"2017-12-06T00:00:00.000Z","descriptions":[{"lang":"en","value":"The __netlink_deliver_tap_skb function in net/netlink/af_netlink.c in the Linux kernel through 4.14.4, when CONFIG_NLMON is enabled, does not restrict observations of Netlink messages to a single net namespace, which allows local users to obtain sensitive information by leveraging the CAP_NET_ADMIN capability to sniff an nlmon interface for all Netlink activity on the system."}],"problemTypes":[{"descriptions":[{"description":"n/a","lang":"en","type":"text"}]}],"providerMetadata":{"dateUpdated":"2018-05-30T09:57:01.000Z","orgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","shortName":"mitre"},"references":[{"name":"USN-3619-2","tags":["vendor-advisory","x_refsource_UBUNTU"],"url":"https://usn.ubuntu.com/3619-2/"},{"name":"DSA-4082","tags":["vendor-advisory","x_refsource_DEBIAN"],"url":"https://www.debian.org/security/2018/dsa-4082"},{"tags":["x_refsource_MISC"],"url":"https://lkml.org/lkml/2017/12/5/950"},{"name":"102122","tags":["vdb-entry","x_refsource_BID"],"url":"http://www.securityfocus.com/bid/102122"},{"name":"RHSA-2018:1062","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2018:1062"},{"tags":["x_refsource_CONFIRM"],"url":"https://source.android.com/security/bulletin/pixel/2018-04-01"},{"name":"RHSA-2018:0654","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2018:0654"},{"name":"RHSA-2018:0676","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2018:0676"},{"name":"USN-3653-2","tags":["vendor-advisory","x_refsource_UBUNTU"],"url":"https://usn.ubuntu.com/3653-2/"},{"name":"USN-3655-1","tags":["vendor-advisory","x_refsource_UBUNTU"],"url":"https://usn.ubuntu.com/3655-1/"},{"name":"RHSA-2018:1170","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2018:1170"},{"name":"RHSA-2018:1130","tags":["vendor-advisory","x_refsource_REDHAT"],"url":"https://access.redhat.com/errata/RHSA-2018:1130"},{"name":"DSA-4073","tags":["vendor-advisory","x_refsource_DEBIAN"],"url":"https://www.debian.org/security/2017/dsa-4073"},{"name":"USN-3655-2","tags":["vendor-advisory","x_refsource_UBUNTU"],"url":"https://usn.ubuntu.com/3655-2/"},{"name":"USN-3653-1","tags":["vendor-advisory","x_refsource_UBUNTU"],"url":"https://usn.ubuntu.com/3653-1/"},{"name":"USN-3657-1","tags":["vendor-advisory","x_refsource_UBUNTU"],"url":"https://usn.ubuntu.com/3657-1/"},{"name":"USN-3619-1","tags":["vendor-advisory","x_refsource_UBUNTU"],"url":"https://usn.ubuntu.com/3619-1/"}],"x_legacyV4Record":{"CVE_data_meta":{"ASSIGNER":"cve@mitre.org","ID":"CVE-2017-17449","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":"The __netlink_deliver_tap_skb function in net/netlink/af_netlink.c in the Linux kernel through 4.14.4, when CONFIG_NLMON is enabled, does not restrict observations of Netlink messages to a single net namespace, which allows local users to obtain sensitive information by leveraging the CAP_NET_ADMIN capability to sniff an nlmon interface for all Netlink activity on the system."}]},"problemtype":{"problemtype_data":[{"description":[{"lang":"eng","value":"n/a"}]}]},"references":{"reference_data":[{"name":"USN-3619-2","refsource":"UBUNTU","url":"https://usn.ubuntu.com/3619-2/"},{"name":"DSA-4082","refsource":"DEBIAN","url":"https://www.debian.org/security/2018/dsa-4082"},{"name":"https://lkml.org/lkml/2017/12/5/950","refsource":"MISC","url":"https://lkml.org/lkml/2017/12/5/950"},{"name":"102122","refsource":"BID","url":"http://www.securityfocus.com/bid/102122"},{"name":"RHSA-2018:1062","refsource":"REDHAT","url":"https://access.redhat.com/errata/RHSA-2018:1062"},{"name":"https://source.android.com/security/bulletin/pixel/2018-04-01","refsource":"CONFIRM","url":"https://source.android.com/security/bulletin/pixel/2018-04-01"},{"name":"RHSA-2018:0654","refsource":"REDHAT","url":"https://access.redhat.com/errata/RHSA-2018:0654"},{"name":"RHSA-2018:0676","refsource":"REDHAT","url":"https://access.redhat.com/errata/RHSA-2018:0676"},{"name":"USN-3653-2","refsource":"UBUNTU","url":"https://usn.ubuntu.com/3653-2/"},{"name":"USN-3655-1","refsource":"UBUNTU","url":"https://usn.ubuntu.com/3655-1/"},{"name":"RHSA-2018:1170","refsource":"REDHAT","url":"https://access.redhat.com/errata/RHSA-2018:1170"},{"name":"RHSA-2018:1130","refsource":"REDHAT","url":"https://access.redhat.com/errata/RHSA-2018:1130"},{"name":"DSA-4073","refsource":"DEBIAN","url":"https://www.debian.org/security/2017/dsa-4073"},{"name":"USN-3655-2","refsource":"UBUNTU","url":"https://usn.ubuntu.com/3655-2/"},{"name":"USN-3653-1","refsource":"UBUNTU","url":"https://usn.ubuntu.com/3653-1/"},{"name":"USN-3657-1","refsource":"UBUNTU","url":"https://usn.ubuntu.com/3657-1/"},{"name":"USN-3619-1","refsource":"UBUNTU","url":"https://usn.ubuntu.com/3619-1/"}]}}}},"cveMetadata":{"assignerOrgId":"8254265b-2729-46b6-b9e3-3dfca2d5bfca","assignerShortName":"mitre","cveId":"CVE-2017-17449","datePublished":"2017-12-07T00:00:00.000Z","dateReserved":"2017-12-06T00:00:00.000Z","dateUpdated":"2024-08-05T20:51:31.636Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.1"},"nvd":{"publishedDate":"2017-12-07 00:29:00","lastModifiedDate":"2025-04-20 01:37:25","problem_types":["CWE-200","n/a"],"metrics":{"cvssMetricV30":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.0","vectorString":"CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N","baseScore":4.7,"baseSeverity":"MEDIUM","attackVector":"LOCAL","attackComplexity":"HIGH","privilegesRequired":"LOW","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"NONE","availabilityImpact":"NONE"},"exploitabilityScore":1,"impactScore":3.6}],"cvssMetricV2":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"2.0","vectorString":"AV:L/AC:M/Au:N/C:P/I:N/A:N","baseScore":1.9,"accessVector":"LOCAL","accessComplexity":"MEDIUM","authentication":"NONE","confidentialityImpact":"PARTIAL","integrityImpact":"NONE","availabilityImpact":"NONE"},"baseSeverity":"LOW","exploitabilityScore":3.4,"impactScore":2.9,"acInsufInfo":false,"obtainAllPrivilege":false,"obtainUserPrivilege":false,"obtainOtherPrivilege":false,"userInteractionRequired":false}]},"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*","versionEndIncluding":"4.14.4","matchCriteriaId":"73A9E8BB-A037-453D-8A98-A22D9B0A0020"}]}]}]},"legacy_mitre":{"record":{"CveYear":"2017","CveId":"17449","Ordinal":"1","Title":"CVE-2017-17449","CVE":"CVE-2017-17449","Year":"2017"},"notes":[{"CveYear":"2017","CveId":"17449","Ordinal":"1","NoteData":"The __netlink_deliver_tap_skb function in net/netlink/af_netlink.c in the Linux kernel through 4.14.4, when CONFIG_NLMON is enabled, does not restrict observations of Netlink messages to a single net namespace, which allows local users to obtain sensitive information by leveraging the CAP_NET_ADMIN capability to sniff an nlmon interface for all Netlink activity on the system.","Type":"Description","Title":"CVE-2017-17449"},{"CveYear":"2017","CveId":"17449","Ordinal":"2","NoteData":"2017-12-06","Type":"Other","Title":"Published"},{"CveYear":"2017","CveId":"17449","Ordinal":"3","NoteData":"2018-05-30","Type":"Other","Title":"Modified"}]}}}