CVE-2016-7421

LOW

Description

The pvscsi_ring_pop_req_descr function in hw/scsi/vmw_pvscsi.c in QEMU (aka Quick Emulator) allows local guest OS administrators to cause a denial of service (infinite loop and QEMU process crash) by leveraging failure to limit process IO loop to the ring size.

References

http://git.qemu.org/?p=qemu.git;a=commit;h=d251157ac1928191af851d199a9ff255d330bec9

http://www.openwall.com/lists/oss-security/2016/09/16/3

http://www.openwall.com/lists/oss-security/2016/09/16/9

http://www.securityfocus.com/bid/92998

https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html

https://lists.gnu.org/archive/html/qemu-devel/2016-09/msg03609.html

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

Details

Source: MITRE

Published: 2016-12-10

Updated: 2018-12-01

Type: CWE-399

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: 4.4

Vector: CVSS:3.0/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