Improper access control in QEMU - CVE-2015-8550
Published: April 14, 2016 / Updated: February 23, 2021
Vulnerability identifier: #VU32330
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P/U:Clear
CVE-ID: CVE-2015-8550
CWE-ID: CWE-284
Exploitation vector: Local access
Exploit availability:
Public exploit is available
Vendor: QEMU
Affected software:
QEMU
QEMU
Detailed vulnerability description
The vulnerability allows a local privileged user to execute arbitrary code.
Xen, when used on a system providing PV backends, allows local guest OS administrators to cause a denial of service (host OS crash) or gain privileges by writing to memory shared between the frontend and backend, aka a double fetch vulnerability.
How to mitigate CVE-2015-8550
Install update from vendor's website.
Sources
- http://lists.opensuse.org/opensuse-security-announce/2016-03/msg00094.html
- http://lists.opensuse.org/opensuse-security-announce/2016-04/msg00045.html
- http://lists.opensuse.org/opensuse-security-announce/2016-07/msg00005.html
- http://www.debian.org/security/2016/dsa-3434
- http://www.debian.org/security/2016/dsa-3471
- http://www.debian.org/security/2016/dsa-3519
- http://www.oracle.com/technetwork/topics/security/ovmbulletinjul2016-3090546.html
- http://www.securityfocus.com/bid/79592
- http://www.securitytracker.com/id/1034479
- http://xenbits.xen.org/xsa/advisory-155.html
- https://security.gentoo.org/glsa/201604-03