CVE-2017-12134 Information

Description

The xen_biovec_phys_mergeable function in drivers/xen/biomerge.c in Xen might allow local OS guest users to corrupt block device data streams and consequently obtain sensitive memory information cause a denial of service or gain host OS privileges by leveraging incorrect block IO merge-ability calculation.

CVSS Vector

CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

Reference

http://www.debian.org/security/2017/dsa-3981 http://www.openwall.com/lists/oss-security/2017/08/15/4 http://www.securityfocus.com/bid/100343 http://www.securitytracker.com/id/1039176 http://xenbits.xen.org/xsa/advisory-229.html https://bugzilla.redhat.com/show_bug.cgi?id=1477656 https://security.gentoo.org/glsa/201801-14 https://support.citrix.com/article/CTX225941 https://usn.ubuntu.com/3655-1/ https://usn.ubuntu.com/3655-2/

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

CHANGED

Integrity Impact

HIGH

Availability Impact

HIGH

Base Score

HIGH

Base Severity

8.8