fkie_cve-2016-9604
Vulnerability from fkie_nvd
Published
2018-07-11 13:29
Modified
2024-11-21 03:01
Severity ?
4.4 (Medium) - CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
4.4 (Medium) - CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
4.4 (Medium) - CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
Summary
It was discovered in the Linux kernel before 4.11-rc8 that root can gain direct access to an internal keyring, such as '.dns_resolver' in RHEL-7 or '.builtin_trusted_keys' upstream, by joining it as its session keyring. This allows root to bypass module signature verification by adding a new public key of its own devising to the keyring.
References
Impacted products
Vendor | Product | Version | |
---|---|---|---|
linux | linux_kernel | * | |
linux | linux_kernel | 4.11 | |
linux | linux_kernel | 4.11 | |
linux | linux_kernel | 4.11 | |
linux | linux_kernel | 4.11 | |
linux | linux_kernel | 4.11 | |
linux | linux_kernel | 4.11 | |
linux | linux_kernel | 4.11 |
{ "configurations": [ { "nodes": [ { "cpeMatch": [ { "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*", "matchCriteriaId": "BDB550B4-ED03-4369-B53F-4FF3A24ECB0D", "versionEndIncluding": "4.11", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:4.11:rc1:*:*:*:*:*:*", "matchCriteriaId": "45227BEA-300E-4694-8ADE-D0FA7C560C83", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:4.11:rc2:*:*:*:*:*:*", "matchCriteriaId": "9F27DB1B-125C-416A-8DF1-80EE75E4F972", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:4.11:rc3:*:*:*:*:*:*", "matchCriteriaId": "64F78CCF-F54B-4D1C-AFA6-DE4076C3A263", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:4.11:rc4:*:*:*:*:*:*", "matchCriteriaId": "A659506C-868E-4E87-B0D8-E901BC2E9BDC", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:4.11:rc5:*:*:*:*:*:*", "matchCriteriaId": "ACE2C8C3-F2AA-4A39-9D81-B0F8BB82B834", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:4.11:rc6:*:*:*:*:*:*", "matchCriteriaId": "D67BFFD0-1A52-4F5D-98DB-D94B58FD8D30", "vulnerable": true }, { "criteria": "cpe:2.3:o:linux:linux_kernel:4.11:rc7:*:*:*:*:*:*", "matchCriteriaId": "7D996F38-22AC-4059-84FC-F7D69CE0CB9B", "vulnerable": true } ], "negate": false, "operator": "OR" } ] } ], "cveTags": [], "descriptions": [ { "lang": "en", "value": "It was discovered in the Linux kernel before 4.11-rc8 that root can gain direct access to an internal keyring, such as \u0027.dns_resolver\u0027 in RHEL-7 or \u0027.builtin_trusted_keys\u0027 upstream, by joining it as its session keyring. This allows root to bypass module signature verification by adding a new public key of its own devising to the keyring." }, { "lang": "es", "value": "Se ha descubierto en el kernel de Linux en versiones anteriores a la 4.11-rc8 que root puede obtener acceso directo a un keyring interno, como \".dns_resolver\" en RHEL-7 o el upstream \".builtin_trusted_keys\" uni\u00e9ndose a \u00e9l como su keyring de sesi\u00f3n. Esto permite que root omita la verificaci\u00f3n de firmas del m\u00f3dulo a\u00f1adiendo una nueva clave p\u00fablica de su propia elaboraci\u00f3n al keyring." } ], "id": "CVE-2016-9604", "lastModified": "2024-11-21T03:01:29.833", "metrics": { "cvssMetricV2": [ { "acInsufInfo": false, "baseSeverity": "LOW", "cvssData": { "accessComplexity": "LOW", "accessVector": "LOCAL", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 2.1, "confidentialityImpact": "NONE", "integrityImpact": "PARTIAL", "vectorString": "AV:L/AC:L/Au:N/C:N/I:P/A:N", "version": "2.0" }, "exploitabilityScore": 3.9, "impactScore": 2.9, "obtainAllPrivilege": false, "obtainOtherPrivilege": false, "obtainUserPrivilege": false, "source": "nvd@nist.gov", "type": "Primary", "userInteractionRequired": false } ], "cvssMetricV30": [ { "cvssData": { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 4.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N", "version": "3.0" }, "exploitabilityScore": 0.8, "impactScore": 3.6, "source": "secalert@redhat.com", "type": "Secondary" }, { "cvssData": { "attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 4.4, "baseSeverity": "MEDIUM", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "HIGH", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.0/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N", "version": "3.0" }, "exploitabilityScore": 0.8, "impactScore": 3.6, "source": "nvd@nist.gov", "type": "Primary" } ] }, "published": "2018-07-11T13:29:00.207", "references": [ { "source": "secalert@redhat.com", "tags": [ "Third Party Advisory" ], "url": "http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-9604.html" }, { "source": "secalert@redhat.com", "tags": [ "Third Party Advisory", "VDB Entry" ], "url": "http://www.securityfocus.com/bid/102135" }, { "source": "secalert@redhat.com", "tags": [ "Third Party Advisory" ], "url": "https://access.redhat.com/errata/RHSA-2017:1842" }, { "source": "secalert@redhat.com", "tags": [ "Third Party Advisory" ], "url": "https://access.redhat.com/errata/RHSA-2017:2077" }, { "source": "secalert@redhat.com", "tags": [ "Third Party Advisory" ], "url": "https://access.redhat.com/errata/RHSA-2017:2669" }, { "source": "secalert@redhat.com", "tags": [ "Issue Tracking", "Third Party Advisory" ], "url": "https://bugzilla.novell.com/show_bug.cgi?id=1035576" }, { "source": "secalert@redhat.com", "tags": [ "Issue Tracking", "Third Party Advisory" ], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-9604" }, { "source": "secalert@redhat.com", "tags": [ "Patch", "Vendor Advisory" ], "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ee8f844e3c5a73b999edf733df1c529d6503ec2f" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Third Party Advisory" ], "url": "http://people.canonical.com/~ubuntu-security/cve/2016/CVE-2016-9604.html" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Third Party Advisory", "VDB Entry" ], "url": "http://www.securityfocus.com/bid/102135" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Third Party Advisory" ], "url": "https://access.redhat.com/errata/RHSA-2017:1842" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Third Party Advisory" ], "url": "https://access.redhat.com/errata/RHSA-2017:2077" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Third Party Advisory" ], "url": "https://access.redhat.com/errata/RHSA-2017:2669" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Issue Tracking", "Third Party Advisory" ], "url": "https://bugzilla.novell.com/show_bug.cgi?id=1035576" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Issue Tracking", "Third Party Advisory" ], "url": "https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2016-9604" }, { "source": "af854a3a-2127-422b-91ae-364da2661108", "tags": [ "Patch", "Vendor Advisory" ], "url": "https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=ee8f844e3c5a73b999edf733df1c529d6503ec2f" } ], "sourceIdentifier": "secalert@redhat.com", "vulnStatus": "Modified", "weaknesses": [ { "description": [ { "lang": "en", "value": "CWE-732" } ], "source": "secalert@redhat.com", "type": "Secondary" }, { "description": [ { "lang": "en", "value": "CWE-347" } ], "source": "nvd@nist.gov", "type": "Primary" } ] }
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Sightings
Author | Source | Type | Date |
---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or seen somewhere by the user.
- Confirmed: The vulnerability is confirmed from an analyst perspective.
- Exploited: This vulnerability was exploited and seen by the user reporting the sighting.
- Patched: This vulnerability was successfully patched by the user reporting the sighting.
- Not exploited: This vulnerability was not exploited or seen by the user reporting the sighting.
- Not confirmed: The user expresses doubt about the veracity of the vulnerability.
- Not patched: This vulnerability was not successfully patched by the user reporting the sighting.
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