CVE-2015-8817

MEDIUM
New! CVE Severity Now Using CVSS v3

The calculated severity for CVEs has been updated to use CVSS v3 by default. CVEs that do not have a CVSS v3 score will fall back CVSS v2 for calculating severity. Severity display preferences can be toggled in the settings dropdown.

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.

References

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

Details

Source: MITRE

Published: 2016-12-29

Updated: 2018-01-05

Type: CWE-125

Risk Information

CVSS v2

Base Score: 2.1

Vector: AV:L/AC:L/Au:N/C:N/I:N/A:P

Impact Score: 2.9

Exploitability Score: 3.9

Severity: LOW

CVSS v3

Base Score: 5.5

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

Impact Score: 3.6

Exploitability Score: 1.8

Severity: MEDIUM

Tenable Plugins

View all (8 total)

IDNameProductFamilySeverity
93170SUSE SLED12 / SLES12 Security Update : qemu (SUSE-SU-2016:1703-1)NessusSuSE Local Security Checks
critical
91980openSUSE Security Update : qemu (openSUSE-2016-839)NessusSuSE Local Security Checks
critical
91660SUSE SLED12 / SLES12 Security Update : qemu (SUSE-SU-2016:1560-1)NessusSuSE Local Security Checks
critical
91249SUSE SLED12 / SLES12 Security Update : xen (SUSE-SU-2016:1318-1)NessusSuSE Local Security Checks
critical
90396SUSE SLED11 / SLES11 Security Update : xen (SUSE-SU-2016:0955-1)NessusSuSE Local Security Checks
critical
90186SUSE SLED12 / SLES12 Security Update : xen (SUSE-SU-2016:0873-1)NessusSuSE Local Security Checks
critical
90045Fedora 23 : xen-4.5.2-9.fc23 (2016-f4504e9445)NessusFedora Local Security Checks
high
90036Fedora 22 : xen-4.5.2-9.fc22 (2016-38b20aa50f)NessusFedora Local Security Checks
high