CVE-2015-8817 Information

Description

QEMU (aka Quick Emulator) built to use ‘address_space_translate’ to map an address to a MemoryRegionSection is vulnerable to an OOB r/w access issue. It could occur while doing pci_dma_read/write calls. Affects QEMU versions = 1.6.0 and = 2.3.1. A privileged user inside guest could use this flaw to crash the guest instance resulting in DoS.

CVSS Vector

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

Reference

http://git.qemu.org/?p=qemu.git;a=commit;h=23820dbfc79d1c9dce090b4c555994f2bb6a69b3 http://git.qemu.org/?p=qemu.git;a=commit;h=c3c1bb99d1c11978d9ce94d1bdcf0705378c1459 http://rhn.redhat.com/errata/RHSA-2016-2670.html http://rhn.redhat.com/errata/RHSA-2016-2671.html http://rhn.redhat.com/errata/RHSA-2016-2704.html http://rhn.redhat.com/errata/RHSA-2016-2705.html http://rhn.redhat.com/errata/RHSA-2016-2706.html http://www.openwall.com/lists/oss-security/2016/03/01/1 http://www.openwall.com/lists/oss-security/2016/03/01/10 https://bugzilla.redhat.com/show_bug.cgi?id=1300771 https://lists.gnu.org/archive/html/qemu-stable/2016-01/msg00060.html

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

5.5