CVE-2017-18344

CVSS v3.0 5.5 (Medium)

CVSS v2.0 2.1 (Low)

EPSS 0.10 % (41^th)

Affected Products 9

Advisories 22

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).

Weaknesses

CWE-125: Out-of-bounds Read

CVE Status: PUBLISHED
CNA: MITRE
Published Date: 2018-07-26 19:29:00
(6 years ago)
Updated Date: 2020-10-15 13:28:10
(3 years ago)

Affected Products

Canonical

Ubuntu Linux

Linux

Linux Kernel

Redhat

Configuration #1

		CPE23	From	Up To
	Linux Kernel prior 4.14.8 version	cpe:2.3:o:linux:linux_kernel		< 4.14.8

Configuration #2

		CPE23	From	Up To
	Canonical Ubuntu Linux 12.04	cpe:2.3:o:canonical:ubuntu_linux:12.04:::*:esm
	Canonical Ubuntu Linux 14.04	cpe:2.3:o:canonical:ubuntu_linux:14.04:::*:lts

Configuration #3

		CPE23	From	Up To
	Redhat Mrg Realtime 2.0	cpe:2.3:a:redhat:mrg_realtime:2.0
	Redhat Enterprise Linux Desktop 7.0	cpe:2.3:o:redhat:enterprise_linux_desktop:7.0
	Redhat Enterprise Linux Server 7.0	cpe:2.3:o:redhat:enterprise_linux_server:7.0
	Redhat Enterprise Linux Server Aus 7.2	cpe:2.3:o:redhat:enterprise_linux_server_aus:7.2
	Redhat Enterprise Linux Server Aus 7.3	cpe:2.3:o:redhat:enterprise_linux_server_aus:7.3
	Redhat Enterprise Linux Server Aus 7.4	cpe:2.3:o:redhat:enterprise_linux_server_aus:7.4
	Redhat Enterprise Linux Server Eus 7.3	cpe:2.3:o:redhat:enterprise_linux_server_eus:7.3
	Redhat Enterprise Linux Server Eus 7.5	cpe:2.3:o:redhat:enterprise_linux_server_eus:7.5
	Redhat Enterprise Linux Server Tus 7.2	cpe:2.3:o:redhat:enterprise_linux_server_tus:7.2
	Redhat Enterprise Linux Server Tus 7.3	cpe:2.3:o:redhat:enterprise_linux_server_tus:7.3
	Redhat Enterprise Linux Server Tus 7.4	cpe:2.3:o:redhat:enterprise_linux_server_tus:7.4
	Redhat Enterprise Linux Workstation 7.0	cpe:2.3:o:redhat:enterprise_linux_workstation:7.0