CVE-2017-7518
CVE-2017-7518
Vexday Risk Score
13Low
SSVC decision (CISA)
Track
No exploitation signal → monitor
CVSS 5.5EPSS 0.7%KEV nãoPoC —Nuclei —Metasploit —Patch referenciado
Lifecycle
30 Jul 2018Published on NVD
Recommendation: Monitor — no exploitation signal at the moment.
A flaw was found in the Linux kernel before version 4.12 in the way the KVM module processed the trap flag(TF) bit in EFLAGS during emulation of the syscall instruction, which leads to a debug exception(#DB) being raised in the guest stack. A user/process inside a guest could use this flaw to potentially escalate their privileges inside the guest. Linux guests are not affected by this.
CVSS:3.0/AV:A/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Affected products
[UNKNOWN] · Kernel:Want to know if your infrastructure is exposed to this?
Talk to TrueHacking →References
https://access.redhat.com/articles/3290921https://access.redhat.com/errata/RHSA-2018:0395https://access.redhat.com/errata/RHSA-2018:0412https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2017-7518https://usn.ubuntu.com/3619-1/https://usn.ubuntu.com/3619-2/https://usn.ubuntu.com/3754-1/https://www.debian.org/security/2017/dsa-3981https://www.spinics.net/lists/kvm/msg151817.htmlhttp://www.openwall.com/lists/oss-security/2017/06/23/5http://www.securityfocus.com/bid/99263http://www.securitytracker.com/id/1038782