gsd-2017-18344
Vulnerability from gsd
Modified
2023-12-13 01:21
Details
The timer_create syscall implementation in kernel/time/posix-timers.c in the Linux kernel before 4.14.8 doesn't properly validate the sigevent->sigev_notify field, which leads to out-of-bounds access in the show_timer function (called when /proc/$PID/timers is read). This allows userspace applications to read arbitrary kernel memory (on a kernel built with CONFIG_POSIX_TIMERS and CONFIG_CHECKPOINT_RESTORE).
Aliases
Aliases
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"id": "GSD-2017-18344",
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"https://www.suse.com/security/cve/CVE-2017-18344.html",
"https://access.redhat.com/errata/RHSA-2018:3591",
"https://access.redhat.com/errata/RHSA-2018:3590",
"https://access.redhat.com/errata/RHSA-2018:3586",
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"https://access.redhat.com/errata/RHSA-2018:3459",
"https://access.redhat.com/errata/RHSA-2018:3096",
"https://access.redhat.com/errata/RHSA-2018:3083",
"https://access.redhat.com/errata/RHSA-2018:2948",
"https://ubuntu.com/security/CVE-2017-18344",
"https://advisories.mageia.org/CVE-2017-18344.html",
"https://linux.oracle.com/cve/CVE-2017-18344.html",
"https://packetstormsecurity.com/files/cve/CVE-2017-18344"
]
},
"gsd": {
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"remediation": "unknown",
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"modified": "2023-12-13T01:21:10.337638Z",
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"impact": {
"baseMetricV2": {
"acInsufInfo": false,
"cvssV2": {
"accessComplexity": "LOW",
"accessVector": "LOCAL",
"authentication": "NONE",
"availabilityImpact": "NONE",
"baseScore": 2.1,
"confidentialityImpact": "PARTIAL",
"integrityImpact": "NONE",
"vectorString": "AV:L/AC:L/Au:N/C:P/I:N/A:N",
"version": "2.0"
},
"exploitabilityScore": 3.9,
"impactScore": 2.9,
"obtainAllPrivilege": false,
"obtainOtherPrivilege": false,
"obtainUserPrivilege": false,
"severity": "LOW",
"userInteractionRequired": false
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"attackVector": "LOCAL",
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"baseScore": 5.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "HIGH",
"integrityImpact": "NONE",
"privilegesRequired": "LOW",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N",
"version": "3.0"
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"exploitabilityScore": 1.8,
"impactScore": 3.6
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},
"lastModifiedDate": "2020-10-15T13:28Z",
"publishedDate": "2018-07-26T19:29Z"
}
}
}
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