THREATPORT/VULNERABILITY/CVE-2017-18344
MEDIUM SEVERITY

CVE-2017-18344

Linux Kernel vulnerability

CVSS
5.5
EPSS
3.2%
EPSS pct
87th
Exploited
No known
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).
Affected vendor
Linux
Affected product
Linux Kernel
CVSS vector
CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Weakness type (CWE)
Published
2018-07-26

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable with local access, low attack complexity, requiring low privileges, no user interaction. Successful exploitation leads to high impact to confidentiality.

Its EPSS score of 3.2% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 87% of all scored CVEs.

Check your external exposure to CVE-2017-18344

  • Confirm whether Linux Linux Kernel is running on any internet-facing host or subdomain.
  • Match discovered service fingerprints against the version affected by CVE-2017-18344.
  • Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2017-18344

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2017-18344 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

Run a free external exposure scan

Are you exposed to CVE-2017-18344?

Run an instant, non-intrusive external scan to check your attack surface for CVE-2017-18344.

Start free scan

No credit card. Agentless.

Related vulnerabilities

MEDIUM
CVE-2014-5111
Trixbox vulnerability
MEDIUM
CVE-2014-4710
Zerocms vulnerability
MEDIUM
CVE-2014-4909
Ubuntu Linux vulnerability