CVE-2016-1922

LOW

Description

QEMU (aka Quick Emulator) built with the TPR optimization for 32-bit Windows guests support is vulnerable to a null pointer dereference flaw. It occurs while doing I/O port write operations via hmp interface. In that, 'current_cpu' remains null, which leads to the null pointer dereference. A user or process could use this flaw to crash the QEMU instance, resulting in DoS issue.

References

http://www.debian.org/security/2016/dsa-3469

http://www.debian.org/security/2016/dsa-3470

http://www.debian.org/security/2016/dsa-3471

http://www.openwall.com/lists/oss-security/2016/01/16/1

http://www.openwall.com/lists/oss-security/2016/01/16/6

http://www.securityfocus.com/bid/81058

https://bugzilla.redhat.com/show_bug.cgi?id=1283934

https://lists.gnu.org/archive/html/qemu-devel/2016-01/msg02812.html

https://security.gentoo.org/glsa/201604-01

Details

Source: MITRE

Published: 2016-12-29

Updated: 2020-11-10

Type: CWE-476

Risk Information

CVSS v2.0

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 v3.0

Base Score: 5.5

Vector: CVSS:3.1/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

Vulnerable Software

Configuration 1

OR

cpe:2.3:a:qemu:qemu:*:*:*:*:*:*:*:* versions up to 2.5.1.1 (inclusive)

Configuration 2

OR

cpe:2.3:o:debian:debian_linux:7.0:*:*:*:*:*:*:*

cpe:2.3:o:debian:debian_linux:8.0:*:*:*:*:*:*:*

Tenable Plugins

View all (17 total)

IDNameProductFamilySeverity
93180SUSE SLES11 Security Update : kvm (SUSE-SU-2016:1785-1)NessusSuSE Local Security Checks
high
93170SUSE SLED12 / SLES12 Security Update : qemu (SUSE-SU-2016:1703-1)NessusSuSE Local Security Checks
high
93169SUSE SLES11 Security Update : kvm (SUSE-SU-2016:1698-1)NessusSuSE Local Security Checks
high
91980openSUSE Security Update : qemu (openSUSE-2016-839)NessusSuSE Local Security Checks
high
91660SUSE SLED12 / SLES12 Security Update : qemu (SUSE-SU-2016:1560-1)NessusSuSE Local Security Checks
high
91249SUSE SLED12 / SLES12 Security Update : xen (SUSE-SU-2016:1318-1)NessusSuSE Local Security Checks
high
90396SUSE SLED11 / SLES11 Security Update : xen (SUSE-SU-2016:0955-1)NessusSuSE Local Security Checks
high
90339GLSA-201604-01 : QEMU: Multiple vulnerabilitiesNessusGentoo Local Security Checks
medium
90186SUSE SLED12 / SLES12 Security Update : xen (SUSE-SU-2016:0873-1)NessusSuSE Local Security Checks
high
90045Fedora 23 : xen-4.5.2-9.fc23 (2016-f4504e9445)NessusFedora Local Security Checks
medium
90036Fedora 22 : xen-4.5.2-9.fc22 (2016-38b20aa50f)NessusFedora Local Security Checks
medium
89526Fedora 23 : qemu-2.4.1-6.fc23 (2016-42778e8c82)NessusFedora Local Security Checks
high
89498Fedora 22 : qemu-2.3.1-11.fc22 (2016-275e9ff483)NessusFedora Local Security Checks
medium
88630Debian DSA-3471-1 : qemu - security updateNessusDebian Local Security Checks
high
88629Debian DSA-3470-1 : qemu-kvm - security updateNessusDebian Local Security Checks
high
88628Debian DSA-3469-1 : qemu - security updateNessusDebian Local Security Checks
high
88576Ubuntu 12.04 LTS / 14.04 LTS / 15.10 : qemu, qemu-kvm vulnerabilities (USN-2891-1)NessusUbuntu Local Security Checks
high