CVE•Published 2018-07-26•1 article on news•7 live references•NVD data
CVE-2017-18344
Vulnerability data via CVEDB (Shodan)
CVSS v3.1
5.5
MEDIUM
EPSS percentile
87
Exploit Prediction Scoring System · top 13% of all CVEs
Description
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).
Timeline
Published 2018-07-26
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag1 hosts
vuln:CVE-2017-18344Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · product + version
product:"Redhat Mrg Realtime" version:"2.0"Version-pinned fingerprint from NVD's first vulnerable CPE.
Shodan · banner/body mention
http.html:"Mrg Realtime"HTTP body or banner mentions "Mrg Realtime" — catches deploys Shodan didn't identify as a product.
More intel sources (5)
Shodan report
vuln:CVE-2017-18344Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2017-18344Censys host search filtered to this CVE id.
grep.app
CVE-2017-18344Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2017-18344GitHub code search for direct mentions.
Google dork
"CVE-2017-18344" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.