Information disclosure in QEMU - CVE-2016-6836
Published: December 10, 2016 / Updated: August 9, 2020
Vulnerability identifier: #VU39988
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2016-6836
CWE-ID: CWE-200
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vendor: QEMU
Affected software:
QEMU
QEMU
Detailed vulnerability description
The vulnerability allows a local privileged user to gain access to sensitive information.
The vmxnet3_complete_packet function in hw/net/vmxnet3.c in QEMU (aka Quick Emulator) allows local guest OS administrators to obtain sensitive host memory information by leveraging failure to initialize the txcq_descr object.
How to mitigate CVE-2016-6836
Install update from vendor's website.
Sources
- http://git.qemu.org/?p=qemu.git;a=commit;h=fdda170e50b8af062cf5741e12c4fb5e57a2eacf
- http://www.openwall.com/lists/oss-security/2016/08/11/5
- http://www.openwall.com/lists/oss-security/2016/08/18/5
- http://www.securityfocus.com/bid/92444
- https://lists.debian.org/debian-lts-announce/2018/11/msg00038.html
- https://lists.gnu.org/archive/html/qemu-devel/2016-08/msg02108.html
- https://security.gentoo.org/glsa/201609-01