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{"acknowledgement": "Red Hat would like to thank Eric Biggers (Google) for reporting this issue.", "affected_release": [{"advisory": "RHSA-2018:0412", "cpe": "cpe:/a:redhat:rhel_extras_rt:7", "package": "kernel-rt-0:3.10.0-693.21.1.rt56.639.el7", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2018-03-06T00:00:00Z"}, {"advisory": "RHSA-2018:1062", "cpe": "cpe:/o:redhat:enterprise_linux:7", "package": "kernel-0:3.10.0-862.el7", "product_name": "Red Hat Enterprise Linux 7", "release_date": "2018-04-10T00:00:00Z"}], "bugzilla": {"description": "kernel: improper keyrings creation", "id": "1580979", "url": "https://bugzilla.redhat.com/show_bug.cgi?id=1580979"}, "csaw": false, "cvss3": {"cvss3_base_score": "4.4", "cvss3_scoring_vector": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L", "status": "verified"}, "cwe": "CWE-287", "details": ["In the Linux kernel before 4.13.5, a local user could create keyrings for other users via keyctl commands, setting unwanted defaults or causing a denial of service.", "A flaw was found in the Linux kernel in the way a local user could create keyrings for other users via keyctl commands. This may allow an attacker to set unwanted defaults, a denial of service, or possibly leak keyring information between users."], "name": "CVE-2017-18270", "package_state": [{"cpe": "cpe:/o:redhat:enterprise_linux:5", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 5"}, {"cpe": "cpe:/o:redhat:enterprise_linux:6", "fix_state": "Out of support scope", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 6"}, {"cpe": "cpe:/o:redhat:enterprise_linux:7", "fix_state": "Not affected", "package_name": "kernel-alt", "product_name": "Red Hat Enterprise Linux 7"}, {"cpe": "cpe:/o:redhat:enterprise_linux:8", "fix_state": "Not affected", "package_name": "kernel", "product_name": "Red Hat Enterprise Linux 8"}, {"cpe": "cpe:/a:redhat:enterprise_mrg:2", "fix_state": "Not affected", "package_name": "kernel-rt", "product_name": "Red Hat Enterprise MRG 2"}], "public_date": "2017-09-18T00:00:00Z", "references": ["https://www.cve.org/CVERecord?id=CVE-2017-18270\nhttps://nvd.nist.gov/vuln/detail/CVE-2017-18270\nhttp://kernsec.org/pipermail/linux-security-module-archive/2017-September/003318.html\nhttps://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=237bbd29f7a049d310d907f4b2716a7feef9abf3"], "statement": "The impact is Moderate, because the impact is only for userspace programs if using keyctl incorrectly. For root-level processes (usually during boot) keyctl being used securely without possibility of leaking keys between users.", "threat_severity": "Moderate", "upstream_fix": "kernel 4.13.5"}