CVE-2016-6490

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

The virtqueue_map_desc function in hw/virtio/virtio.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) via a zero length for the descriptor buffer.

References

http://git.qemu.org/?p=qemu.git;a=commit;h=1e7aed70144b4673fc26e73062064b6724795e5f

http://www.openwall.com/lists/oss-security/2016/07/28/4

http://www.openwall.com/lists/oss-security/2016/07/28/9

https://lists.gnu.org/archive/html/qemu-devel/2016-07/msg06246.html

https://security.gentoo.org/glsa/201609-01

Details

Source: MITRE

Published: 2016-12-10

Updated: 2020-10-15

Type: CWE-120

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: 4.4

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

Impact Score: 3.6

Exploitability Score: 0.8

Severity: MEDIUM

Vulnerable Software

Configuration 1

OR

cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:* versions up to 2.6.2 (inclusive)

cpe:2.3:a:qemu:qemu:2.7.0:rc0:*:*:*:*:*:*

Tenable Plugins

View all (6 total)

IDNameProductFamilySeverity
94758SUSE SLES12 Security Update : qemu (SUSE-SU-2016:2781-1)NessusSuSE Local Security Checks
high
94309openSUSE Security Update : qemu (openSUSE-2016-1234)NessusSuSE Local Security Checks
high
94283SUSE SLES11 Security Update : kvm (SUSE-SU-2016:2628-1)NessusSuSE Local Security Checks
high
94277SUSE SLED12 / SLES12 Security Update : qemu (SUSE-SU-2016:2589-1)NessusSuSE Local Security Checks
high
94122Fedora 24 : 2:qemu (2016-a56fb613a8)NessusFedora Local Security Checks
critical
93697GLSA-201609-01 : QEMU: Multiple vulnerabilitiesNessusGentoo Local Security Checks
critical