CVE-2017-5856 Information

Description

Memory leak in the megasas_handle_dcmd function in hw/scsi/megasas.c in QEMU (aka Quick Emulator) allows local guest OS privileged users to cause a denial of service (host memory consumption) via MegaRAID Firmware Interface (MFI) commands with the sglist size set to a value over 2 Gb.

CVSS Vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Reference

http://git.qemu-project.org/?p=qemu.git;a=commit;h=765a707000e838c30b18d712fe6cb3dd8e0435f3 http://www.openwall.com/lists/oss-security/2017/02/01/19 http://www.openwall.com/lists/oss-security/2017/02/02/14 http://www.securityfocus.com/bid/95999 https://bugzilla.redhat.com/show_bug.cgi?id=1418342 https://lists.debian.org/debian-lts-announce/2018/09/msg00007.html https://security.gentoo.org/glsa/201702-28

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

CHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

6.5