CVE-2018-16847

Description

An OOB heap buffer r/w access issue was found in the NVM Express Controller emulation in QEMU. It could occur in nvme_cmb_ops routines in nvme device. A guest user/process could use this flaw to crash the QEMU process resulting in DoS or potentially run arbitrary code with privileges of the QEMU process.

CVSS Metrics

• v3.1•HIGH•Score: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
• v3.0•HIGH•Score: 7CVSS:3.0/AV:L/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:H
• v2.0•MEDIUM•Score: 4.6AV:L/AC:L/Au:N/C:P/I:P/A:P

EPSS Trends

Current EPSS score: 0.09%• Percentile: 26%

Techniques & Countermeasures

• CWE-125•Out-of-bounds Read

  The product reads data past the end, or before the beginning, of the intended buffer.

• CWE-787•Out-of-bounds Write

  The product writes data past the end, or before the beginning, of the intended buffer.

Affected Systems

• canonical•ubuntu_linux

  14.04 | 16.04 | 18.04 | 18.10

• qemu•qemu

  ≤ 3.0.0 | 3.1.0:rc0 | 3.1.0:rc1

• [unknown]•qemu:

  n/a

References (5)

• https://bugzilla.redhat.com/show_bug.cgi?id=CVE-2018-16847
• https://www.openwall.com/lists/oss-security/2018/11/02/1
• https://lists.gnu.org/archive/html/qemu-devel/2018-11/msg00200.html
• https://usn.ubuntu.com/3826-1/
• http://www.securityfocus.com/bid/105866