CVE-2017-18344
23Vexday Risk Score
No sign of exploitation. It has a public proof of concept.
ssvc Attendepss 3.2%
from disclosure to weapon14 days
Published on NVDJul 26
1st PoC+14d
exploitation probability
3.2%top 13% of all CVEs
observed exploitation
nono source reports it
2 public exploit(s)
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 products
n/a · n/apublic PoCs found — 2
cve_referencewww.exploit-db.com/exploits/45175/unverifiedexploitdbwww.exploit-db.com/exploits/45175unverified⚠ Public resources, to assess the exposure of systems you control or are authorized to test. Test only with authorization.
References
https://access.redhat.com/errata/RHSA-2018:2948https://access.redhat.com/errata/RHSA-2018:3083https://access.redhat.com/errata/RHSA-2018:3096https://access.redhat.com/errata/RHSA-2018:3459https://access.redhat.com/errata/RHSA-2018:3540https://access.redhat.com/errata/RHSA-2018:3586https://access.redhat.com/errata/RHSA-2018:3590https://access.redhat.com/errata/RHSA-2018:3591https://cdn.kernel.org/pub/linux/kernel/v4.x/ChangeLog-4.14.8https://github.com/torvalds/linux/commit/cef31d9af908243421258f1df35a4a644604efbehttps://usn.ubuntu.com/3742-1/https://usn.ubuntu.com/3742-2/